Advanced Instruments Osmo1 User manual

Osmo1®
Single-Sample
Micro-Osmometer
UserGuide
133005ENSI Rev 5

2Osmo1®Single-Sample Micro-Osmometer User Guide
Copyright and trademarks
© 2021 Advanced Instruments
This user guide is copyrighted by Advanced Instruments with all rights reserved. Under copyright laws, this guide may not
be reproduced in any form, in whole or part, without the prior written consent of Advanced Instruments. The following are
trademarks of Advanced Instruments:
• Osmo1®
• Hot-Line™
• Protinol™
• Clinitrol™
• Renol™
Employees of Advanced Instruments have reviewed this guide thoroughly. Although material contained within is believed
reliable, the accuracy and completeness are not guaranteed or warranted, and are not intended to be representations or
warranties concerning the product described. Screenshots and images included in this manual are for purposes of example
only and may not be an exact match with the screens you see.

3
Osmo1®Single-Sample Micro-Osmometer User Guide
Contents
Contacting Advanced Instruments..............................5
Supplies, standards & controls .....................................6
Quality control.................................................................. 7
Safe use..............................................................................9
Foreword.......................................................................... 12
Chapter 1
Installation and setup ................................................... 16
1.1 Selecting a location for the instrument....................................16
1.2 Unpacking the shipment................................................................16
1.3 Loading the printer paper ............................................................ 17
1.4 Placing the Micro-Sample Test Kit on the instrument........18
1.5 Connecting to a network (optional)..........................................18
1.6 Powering up the instrument.........................................................19
1.7 Configuring the Osmo1 settings..................................................19
Chapter 2
Osmo1 user interface .................................................... 21
2.1 Touchscreen........................................................................................ 21
2.2 Common screen elements.............................................................21
2.3 Home screen......................................................................................22
2.4 Main menu ..........................................................................................22
2.5 User interface icons ........................................................................23
Chapter 3
Instrument operation ................................................... 24
3.1 Daily procedure ................................................................................24
3.2 Sample preparation ........................................................................25
3.3 Best practices....................................................................................25
3.4 Preparing the Osmo1 for testing................................................25
3.5 Testing procedure............................................................................26
3.6 Repeatability tips.............................................................................29
Chapter 4
Calibration ...................................................................... 30
4.1 Factory calibration ......................................................................... 30
4.2 When to recalibrate ....................................................................... 30
4.3 Calibration procedure ................................................................... 30
4.4 Canceling calibration......................................................................32
Canceling the test in progress................................................32
Canceling the entire calibration.............................................32
4.5 Calibration errors .............................................................................32
Chapter 5
Results ..............................................................................33
5.1 Viewing the results list...................................................................33
5.2 Sorting the results list ....................................................................33
5.3 Filtering the results list ..................................................................33
5.4 Exporting the results......................................................................34
5.5 Applying an action to results......................................................34
Chapter 6
Settings ............................................................................35
6.1 Accessing the Settings menu......................................................35
6.2 Logging in to a Settings function..............................................36
6.3 Timing out of a Settings session................................................36
6.4 Default user accounts ....................................................................36
6.5 Setting date and time ...................................................................36
6.6 Setting language.............................................................................. 37
6.7 Setting up user accounts.............................................................. 37
Accessing the Users screen.....................................................38
Adding a user................................................................................38
Editing a user................................................................................38
Deleting a user .............................................................................39
6.8 Adjusting hardware options ........................................................39
Setting audio options ................................................................39
Adjusting screen brightness....................................................39
Enabling/disabling the printer............................................... 40
Adjusting barcode scanner settings ................................... 40
6.9 Adjusting probe resistance ......................................................... 40

4Osmo1®Single-Sample Micro-Osmometer User Guide
6.10 Establishing controls .......................................................................41
Accessing the Controls screen................................................41
Adding a new control .................................................................41
Editing a control ..........................................................................42
Deleting a control........................................................................42
Displaying a Levey-Jennings chart.......................................43
Adding an action to a control.................................................43
6.11 Setting up LIS communication ...................................................43
Send-results mode..................................................................... 44
LIS connection indicator colors ............................................ 44
Configuring the LIS connection............................................ 44
6.12 Configuring a LAN connection...................................................45
6.13 Service .................................................................................................45
Performing a system update...................................................45
Exporting Osmo1 data...............................................................46
6.14 Assigning restrictions.....................................................................46
6.15 Changing password expiration...................................................48
6.16 Changing the calibration points.................................................48
6.17 Requiring IDs for testing...............................................................48
Home screen when IDs are not required............................48
Home screen when IDs are required....................................48
6.18 Clearing Osmo1 data ......................................................................49
Chapter 7
Diagnostics..................................................................... 50
7.1 Accessing the Diagnostics menu.............................................. 50
7.2 A/D....................................................................................................... 50
7.3 Consumables ......................................................................................51
7.4 Sample probe.................................................................................... 52
7.5 Barcode ............................................................................................... 52
7.6 Events...................................................................................................52
7.7 Printer...................................................................................................53
7.8 LCD........................................................................................................53
7.9 Solenoid...............................................................................................53
Chapter 8
Maintenance & troubleshooting ................................ 54
8.1 Who should perform service.......................................................54
8.2 Issues that require a service technician ..................................54
8.3 ESD precautions...............................................................................54
8.4 Maintenance.......................................................................................55
Chamber cleaning .......................................................................55
Solenoid maintenance ...............................................................55
Fuse replacement........................................................................56
Sampler plunger wire replacement and verification...... 57
8.5 Troubleshooting ...............................................................................59
General errors ...............................................................................59
Errors during calibration...........................................................59
Errors during testing ..................................................................59
Appendix A
Product specifications................................................. 60
Appendix B
Performance characteristics ....................................... 61
Appendix C
Known limitations......................................................... 63
Appendix D
Regulatory notices ....................................................... 64
Appendix E
Supplemental LIS/LAN information..........................67
Appendix F
Product disposal and recycling................................. 68
Appendix G
Warranty and warranty duties................................... 69
Appendix G
Warranty and warranty duties................................... 69

5
Osmo1®Single-Sample Micro-Osmometer User Guide
Contacting Advanced Instruments
General inquiries
• US or Canada
• Toll free phone: [phone] from 8:00 AM – 4:30 PM Eastern time
• Fax: [phone]
• Outside the US or Canada:
• Phone: [phone]
• Fax: [phone]
• Email: [e-mail]
• Web: aicompanies.com
Customer Service/Orders
To order supplies for your Osmo1, contact the Customer Service department.
• US or Canada
• Toll free phone: [phone] from 8:00 AM – 4:30 PM Eastern time
• Fax: [phone]
• Outside the US or Canada:
• Phone: [phone]
• Fax: [phone]
• Email: [e-mail]
Hot-Line™ Technical Service
For any questions or problems related to operation or service, contact the Hot-Line Technical Service department.
• US or Canada
• Toll free phone: [phone] from 8:00 AM – 4:30 PM Eastern time;
after normal business hours, follow prompts
• Fax: [phone]
• Outside the US or Canada:
• Phone: [phone]
• Fax: [phone]
• Email: [e-mail]

6Osmo1®Single-Sample Micro-Osmometer User Guide
Supplies, standards & controls
To order supplies, standards, and controls, contact the Advanced Instruments Customer Service Department.
(See “Contacting Advanced Instruments” on page 5.)
General supplies
Item Part Number
Micro-Sample Test Kit (500 sampler tips,
500chamber cleaners, and 1 plunger wire)
133800
Printer Paper (5 rolls) FLA835
20-μL Ease-Eject™ Sampler 3M0825
Replacement Sample Probe 133060R
Osmo1 User Guide USB Drive 133005UG
Service Manual 133006SM
Calibration standards
Item Part Number
50 mOsm/kg Calibration Standard
(ten 2-mL ampules)
3MA005
850 mOsm/kg Calibration Standard
(ten 2-mL ampules)
3MA085
2000 mOsm/kg Calibration Standard
(ten 2-mL ampules)
3MA200
Reference solutions & controls
Item Part Number
Clinitrol™ 290 Reference Solution
(ten 2-mL ampules)
3MA029
Osmolality Linearity Set (5 levels) 3LA028
Protinol™ Protein-Based Serum Controls
(3levels)
3MA028
Renol™ Urine Osmolality Controls (2 levels) 3LA085
Other standards
Item Part Number
100 mOsm/kg Calibration Standard
(ten 5-mL ampules)
3LA011
200 mOsm/kg Calibration Standard
(ten 2-mL ampules)
3MA020
400 mOsm/kg Calibration Standard
(ten 2-mL ampules)
3MA040
500 mOsm/kg Calibration Standard
(ten 5-mL ampules)
3LA051
900 mOsm/kg Calibration Standard
(ten 5-mL ampules)
3LA091
1000 mOsm/kg Calibration Standard
(ten 2-mL ampules)
3MA100
1500 mOsm/kg Calibration Standard
(ten 5-mL ampules)
3LA151
IMPORTANT: Advanced Instruments cannot guarantee
the stated instrument performance specifications and
accuracy of test results unless Advanced Instruments
brand consumables are used with the instrument. Use of
consumables from manufacturers other than Advanced
Instruments is not recommended and may adversely
aect system calibration, performance, operation, and
accuracy of test results.
Sample tips and cleaners are single-use consumables;
sample cross-contamination can occur if sample tips
and cleaners are re-used.
For information on obtaining these standards and
controls, contact Advanced Instruments. (See
“Contacting Advanced Instruments” on page5).

7
Osmo1®Single-Sample Micro-Osmometer User Guide
Quality control
1 CAP Chemistry Checklist revised 7/28/2015, CHM.13900 Daily QC - Nonwaived Tests.
2 United States Pharmacopeia (USP) Standard 785 Osmolality and Osmolarity (2009). United States Pharmacopeia.
This page describes quality control materials recommended by Advanced Instruments for use with the Osmo1.
Advanced Instruments recommends that you incorporate these materials into your quality control management system.
Regulatory Guidance
• College of American Pathologists (CAP): For
quantitative tests, CAP requires that laboratories run
two controls at two dierent concentrations daily or
with each batch of samples/reagents.1
• United States Pharmacopeia (USP) Standard 785:
Confirm the instrument calibration with a solution such
that the osmolality of the Standard Solution lies within
50 mOsm/kg of the expected value of the Test
Solution or the center of the expected range of
osmolality of the Test Solution.2
Calibration standards, reference solutions, & controls
Advanced Instruments calibration standards, reference
solutions, and controls consist of stable sodium chloride
solutions of known freezing points which bracket those
of the expected unknowns. These standards are
traceable to the National Institute of Standards and
Technology (formerly the National Bureau of Standards).
If you use your osmometer to test biological solutions,
you should also test the osmometer using actual
biological solutions or controls formulated to simulate
biological solutions. Contact your Advanced Instruments
representative to obtain Protinol Protein-Based Serum
Controls and Renol Urine Osmolality Controls.
In addition, Advanced Instruments recommends that you
check with your professional associations and regulatory
bodies for their guidelines, rules, and regulations.
Verifying calibration daily
Verify the accuracy of the Osmo1 daily using Advanced
Instruments reference solutions and controls. Compare
the test results produced by the instrument to expected
values. Recalibrate the instrument if the test results are
outside of the expected ranges. After recalibrating,
re-run the reference solutions and controls to verify that
you obtain the expected results.
We recommend using Clinitrol 290 Reference Solution,
Protinol Protein-Based Serum Controls, and Renol Urine
Osmolality Controls. Use these reference solutions and
controls:
• Daily, prior to testing samples, to verify instrument
operation and confirm calibration
• After performing a recalibration
Verifying linearity
Verify the linearity of the Osmo1 using the Osmolality
Linearity Set (part no. 3LA028). Use the linearity set:
• To verify the linearity and reportable range of the
instrument
• After performing a recalibration
Strengthen your laboratory’s Quality Control program
by using products made specifically for your
osmometer. Use Advanced Instruments reference
solutions and controls to evaluate the performance and
precision of your osmometer:
• Clinitrol™ 290 Reference Solution (part no. 3MA029):
Clinitrol is a true reference designed specifically for
osmometers. It is designed to verify instrument
calibration.
• Protinol™ Protein-Based Osmolality Controls
(partno. 3MA028): Protinol Controls are formulated
to mimic serum at 240, 280, and 320 mOsm/kg H2O.
• Renol™ Urine Osmolality Controls (part no. 3LA085):
Renol Controls are formulated to mimic urine at 300
and 800 mOsm/kg H2O.
• Osmolality Linearity Set (part no. 3LA028): The
Osmolality Linearity helps clinical laboratories easily
monitor osmometer performance specifications and
fulfill CLIA requirements for verifying the reportable
range of a laboratory method.

Quality control
8Osmo1®Single-Sample Micro-Osmometer User Guide
Interpreting results
Data generated using Advanced Instruments standards and reference solutions may be analyzed according to the accuracy
and precision specifications of the instrument (see Appendix B, “Performance characteristics”).
Laboratories may choose to employ one, two, or three standard deviations (SD) for accuracy based on what is relevant in
their laboratories. For normally distributed data, approximately 68% of the individual data values will fall within one
standard deviation of the mean, approximately 95% within two standard deviations, and approximately 99.7% within three
standard deviations.
Advanced Instruments Standards
& Reference Solutions Precision
Accuracy (mOsm/kg H2O)
1 SD 2 SD 3 SD
Clinitrol™ 290 Reference Solution Standard deviation ≤2 mOsm/kg H2O 288–292 286–294 284–296
50 mOsm/kg Calibration Standard Standard deviation ≤2 mOsm/kg H2O 48–52 46–54 44–56
100 mOsm/kg Calibration Standard Standard deviation ≤2 mOsm/kg H2O 98–102 96–104 94–106
200 mOsm/kg Calibration Standard Standard deviation ≤2 mOsm/kg H2O 198–202 196–204 194–206
400 mOsm/kg Calibration Standard Standard deviation ≤2 mOsm/kg H2O 398–402 396–404 394–406
500 mOsm/kg Calibration Standard Coecient of variation ≤0.5% 497-503 494-506 491-509
850 mOsm/kg Calibration Standard Coecient of variation ≤0.5% 845-855 840-860 835-865
900 mOsm/kg Calibration Standard Coecient of variation ≤0.5% 895-905 890-910 885-915
1000 mOsm/kg Calibration Standard Coecient of variation ≤0.5% 995–1005 990–1010 985–1015
1500 mOsm/kg Calibration Standard Coecient of variation ≤1% 1485–1515 1470–1530 1455–1545
2000 mOsm/kg Calibration Standard Coecient of variation ≤1% 1980–2020 1960–2040 1940–2060
Advanced Instruments Controls Expected Levels Expected Ranges
Protinol™ Protein-Based Controls 240 mOsm/kg H2O
280 mOsm/kg H2O
320 mOsm/kg H2O
233-247 mOsm/kg H2O
273-287 mOsm/kg H2O
313-327 mOsm/kg H2O
Renol™ Urine Osmolality Controls 300 mOsm/kg H2O
800 mOsm/kg H2O
290-310 mOsm/kg H2O
790-810 mOsm/kg H2O
Protinol and Renol specifications are presented as a range. This range was established based of stability data and
approximates a three standard deviation range of results.

9
Osmo1®Single-Sample Micro-Osmometer User Guide
Safe use
WARNING: To reduce the risk of bodily injury, electric shock, fire, and damage to your instrument, please read and observe
all precautions in this User Guide.
Only operate this product in accordance with the equipment design, operating instructions, and manufacturer
recommendations; to do otherwise may impair the instrument function or create a safety hazard.
Do not attempt to perform electrical work if you are not fully qualified. This manual is not a substitute for electrical
training.
General cautions
• Only power this instrument with the source specified
on the product electrical ratings label. Refer to the
installation instructions.
• If the power cord provided is replaced for any reason
or if an alternate cord is used, the cord must be
approved for use in the local country. The power cord
must be approved for the product listed operating
voltage and be rated at least 20% greater than the
volt-ampere (VA) ratings marked on the product’s
electrical ratings label. The cord end that connects to
the product must have an IEC 60320 connector.
• Plug the product into an approved grounded electrical
outlet. Exposure to AC voltage could lead to electric
shock, burn or electrocution. Please be aware of any
exposure of AC voltage in the power cord.
• Do not disable the power cord grounding pin.
• If an extension cord or power strip is used, make sure
that the cord or strip is rated for the product, and that
the total ampere ratings of all products plugged into
the extension cord or strip do not exceed 80% of the
cord or strip rating limit.
• Route power cords so that they will not be walked on,
tripped on, or pinched by items placed upon or
against them. Pay particular attention to the plug,
electrical outlet, and the point where the cord exits the
product.
• Do not pull on cords and cables; grasp the
corresponding connector to unplug it.
• Do not install or use this product in any area subject to
extreme short-term temperature variations, or
locations that exceed the specified operating
environment temperatures.
• Never use this product in a wet area.
• To avoid injury or fire hazard, do not operate this
product in an explosive atmosphere.
• Do not install or use the product on an unstable,
non-level work surface.
• Do not operate this product with the covers removed
or unsecured.

Safe use
10 Osmo1®Single-Sample Micro-Osmometer User Guide
Symbol conventions
The list of symbols below is for reference only. Some symbols shown below might not appear on the instrument or in the
accompanying documentation.
Symbol Description
This symbol alerts the user to the presence of important operating and maintenance (servicing) instructions.
This symbol alerts the user to the presence of uninsulated dangerous voltage inside the enclosure that may
constitute risk of electric shock to persons.
This symbol alerts the user to the presence of internal components that could be damaged by static electricity.
This symbol alerts users to the presence of biological substances that may pose a threat to the health of living
organisms, primarily that of humans.
This symbol indicates potential puncture hazards; users keep hands clear.
This symbol alerts the user to the presence of a specific component that could be damaged by static electricity.
This symbol indicates the presence of alternating current (AC).
This symbol indicates the presence of a fuse.
This symbol indicates the presence of protective earth ground.
This symbol indicates the power is ON.
This symbol indicates the power is OFF.

Safe use
11
Osmo1®Single-Sample Micro-Osmometer User Guide
FCC Statement
WARNING: Changes or modifications to this unit not
expressly approved by the party responsible for
compliance could void the user’s authority to operate the
equipment.
This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful
interference when the equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction
manual, may cause harmful interference to radio
communications. Operation of this equipment in a
residential area is likely to cause harmful interference in
which case the user will be required to correct the
interference at his own expense.
Industry Canada Statement
CAUTION: Any changes or modifications not expressly
approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
ATTENTION: Tout changement ou modification non
expressément approuvé par la partie responsable de la
conformité pourrait annuler l’autorisation de l’utilisateur
d’utiliser l’équipement.
This device complies with Industry Canada license-
exempt RSS standard(s). Operation is subject to the
following two conditions: (1) This device may not cause
interference, and (2) this device must accept any
interference, including interference that may cause
undesired operation of the device.
Le présent appareil est conforme aux CNR d’Industrie
Canada applicables aux appareils radio exempts de
licence. L’exploitation est autorisée aux deux conditions
suivantes: (1) l’appareil ne doit pas produire de
brouillage, et (2) l’utilisateur de l’appareil doit accepter
tout brouillage radioélectrique subi, même si le
brouillage est susceptible d’en compromettre le
fonctionnement.

12 Osmo1®Single-Sample Micro-Osmometer User Guide
Foreword
Intended use
Advanced Instruments osmometers use the technique of
freezing point depression to measure osmolality.
Osmolality is the total solute concentration of an
aqueous solution. Osmometers measure the number of
solute particles irrespective of molecular weight or ionic
charge.
Osmolality information is useful to disciplines including
but not limited to:
• Clinical, emergency, and sports medicine
• Medical research
• Academic research
Osmolality is a valuable clinical tool used in the diagnosis
and treatment of patients. It is a quick and eective test
to help evaluate the body’s water balance or its ability to
produce and concentrate urine, to investigate low
sodium levels (hyponatremia), to detect the presence of
toxins in the body, and to monitor the osmolality of
patients undergoing osmotically active drug therapies
such as mannitol, which is used to treat cerebral edema.
This test is also ordered to help monitor the
eectiveness of a treatment for a condition found to be
adversely aecting a person’s osmolality.
Osmometers test the following sample types:
• Serum
• Plasma
• Urine
Operation of the instrument is deemed moderate
complexity under CLIA and FDA guidelines.
Principles of freezing point depression
When a solute is dissolved in a pure solvent, the
following changes in the solution’s properties occur:
• Freezing point is depressed
• Boiling point is raised
• Osmotic pressure is increased
• Vapor pressure is lowered
These are the so-called “colligative” or concentrative
properties of the solution which, within reasonable limits,
change in direct proportion to the solute concentration
(the number of particles in solution).
Of the colligative properties, measurement of the
freezing point easily permits the precise determination
of the concentration of an aqueous solution. The freezing
point of pure H2O is precisely +0.010 °C. One mole of a
non-dissociating solute (a substance which does not
dissociate into ionic species), such as glucose dissolved
in 1 kilogram (kg) of water, depresses the freezing point
of the water by 1.858 °C. This change is known as the
freezing point depression constant for water. The
freezing point depression also depends on the degree of
dissociation of the solute. If the solute is ionic, each ionic
species depresses the freezing point by 1.858 °C. For
example, if one mole of sodium chloride (NaCl) were to
completely dissociate into two ionic species (Na+ and
Cl-) in 1 kg of water, the freezing point would be
depressed by 3.716 °C. However, dissociation is never
complete. Interference between solute molecules
reduces dissociation by a factor called the osmotic
coecient.
In a simple solution (for example, glucose or sodium
chloride in water), the freezing point can be measured
and the unit concentration easily determined from an
equation or a reference table. However, the equation is
unique for each solute. In a more complex solution, all
ionized and non-dissociated species contribute to the
freezing point depression. The concentration of each
solute cannot be easily determined.
Each of the colligative properties has a similar problem.
Though each of the colligative properties changes in
direct proportion to the solute concentration, each
requires a dierent mode and unit of measurement.
Osmolality is a common unit of concentration
measurement that relates all the colligative properties to
each other, and to other concentration units. Because of
its universality, most osmometry applications regularly
use osmolality, expressed as “mOsm/kg H2O,” as the
common unit of concentration rather than applying
further conversion factors.

Foreword
13
Osmo1®Single-Sample Micro-Osmometer User Guide
Instrumentation
Advanced Instruments Osmometers measure the freezing point of an aqueous solution to determine solute concentration.
Advanced Instruments Osmometers utilize high precision thermistors to sense the sample temperature, to control the
degree of super cooling and freeze induction, and to measure the freezing point of the sample. The thermistor can
determine dierences of ±1 mOsm/kg H2O.
Freezing-point thermodynamics
The quickest and most precise way to measure the freezing point of a solution is to supercool it several degrees below its
freezing point and inducing crystallization of the solution via mechanical agitation. The sudden liberation of energy (heat
of fusion) causes the sample temperature to rise toward a plateau temperature, where a liquid/solid equilibrium occurs.
The equilibrium temperature is the freezing point of the solution.
The duration of the liquid/solid equilibrium phase is a function of the speed at which the heat of fusion is liberated versus
the speed at which it is dissipated to the surrounding environment. This ratio can be slowed to prolong the equilibrium
time, giving a distinct plateau measurable to 0.001 °C.
Sensitive thermistor probes monitor the sample temperature and control the thermoelectric cooling element.
Microprocessor control and automated operation minimize imprecision introduced by operator technique.
The standard freezing curve shown below (Figure 1) illustrates the temperature of a sample as it progresses through the
freezing cycle and shows the action of the osmometer at each stage of the cycle.
Figure 1: Standard freezing curve

Foreword
14 Osmo1®Single-Sample Micro-Osmometer User Guide
Definitions
Following are key terms relevant to the science of osmolality.
Avogadro’s number
The number of molecules in one mole (gram molecular weight) of a substance. One mole of non-ionic solute (such as
sucrose) dissolved in one kilogram of water will yield Avogadro’s number (6.022 x 1023) of molecules. One mole of
ionic solute dissolved in one kilogram of water will yield almost twice Avogadro’s number of particles.
Colligative properties
The properties of solutions depend on the number of particles in each volume of solvent, not the mass of the particles.
Colligative properties include: vapor pressure, boiling point, freezing point and osmotic pressure (see also
Concentrative Properties).
Concentration
The relative amount of solute in a solution. This can be expressed in many ways: solute to solvent, solute to solution,
mass to mass, mass to volume, etc.
Concentrative properties
When a solute is dissolved in solvent, certain properties of the solvent—freezing point, boiling point, vapor pressure,
and osmotic pressure—are changed nearly in proportion to the concentration of the solute, expressed in dissolved
particles. Avogadro’s number of particles, regardless of their size or shape, when dissolved in a kilogram of water, will
change each of the concentrative properties a specific amount.
Freezing point osmometers
Instruments which measure the osmotic strength of solution by using freezing point depression.
Freezing point depression
The phenomenon where the freezing point of a liquid (a solvent) is depressed when another compound is added,
meaning a solution has a lower freezing point than a pure solvent.
Ionic solution
Certain molecules, when dissolved, dissociate into charged particles called ions. A good example is sodium chloride
(NaCl), which dissociates in solution to sodium ions (Na+) and chlorine (Cl-) ions.
Membrane osmometers
Instruments which measure the osmotic pressure of a solution separated by a semi-permeable membrane.
Molality
Molal concentration – grams of solute per kilogram of solvent.
Molarity
Molar concentration – grams of solute per liter of solution.
Mole
Molecular weight expressed in grams. Each mole contains Avogadro’s number (6.022 x 1023) of molecules. One mole
of sodium chloride weighs 58.44 grams.
Molecular weight
The sum of the atomic weights of all the atoms in a molecule.

Foreword
15
Osmo1®Single-Sample Micro-Osmometer User Guide
Non-ionic solution
Certain molecules, when dissolved, do not dissociate or ionize into charged particles. Good examples are glucose and
urea.
Osmol (or Osmole)
The standard unit of osmolality based on a one molal concentration of an ion in a solution.
Osmolality
The number of osmoles of solute per kilogram of solvent (temperature independent).
Osmolality equation
Osmolality is the number of osmoles of solute particles per kilogram of pure solvent. Since most ionic species do not
completely dissociate, osmolality is a unit of concentration, which must take into account the dissociative eect.
Osmolality is usually expressed in mOsm/kg H₂O. One milliosmole (mOsm) is 10-3 osmoles. The osmolality equation is:
Osmolality = ϕnC = osmole / kg H₂O
where:
ϕ= osmotic coecient, which accounts for the degree of molecular dissociation
n = number of particles into which a molecule can dissociate
C = molal concentration of the solution
Osmolarity
The number of osmoles of solute per liter of solution (temperature dependent).
Osmotic pressure
The hydrostatic pressure produced by a dierence in concentration between solutions on two sides of a surface such
as a semi-permeable membrane.
Solutes
The minor components of a solution which is dissolved into the solvent.
Solutions
The homogeneous mixture of solutes in a solvent.
Solvent
The major liquid component of a solution and the substance into which a solute is dissolved.
Vapor pressure osmometers
Instruments which measure the concentration of osmotically active particles which reduce the vapor pressure of the
solution.

16 Osmo1®Single-Sample Micro-Osmometer User Guide
Chapter 1
Installation and setup
To set up your instrument properly, it is important to read and carefully follow the steps in this section. Also read
Chapter 2—Instrument Operation before attempting to run your instrument.
1.1 Selecting a location for the instrument
Select a location for the Osmo1 based on the following
space and electrical requirements.
Osmo1 dimensions
• Not including Micro-Sample Test Kit:
15" D x 14" W x 10" H
(38 cm D x 36 cm W x 25 cm H)
• Including Micro-Sample Test Kit:
15" D x 14" W x 15" H
(38 cm D x 36 cm W x 38 cm H)
Recommended clearance
Allow 6 inches (15 cm) of clear space on each side of the
instrument.
Do not block the exhaust fan airflow on the back panel
or underneath the instrument.
Electrical requirements
Your instrument must be located within five
feet of a properly grounded, three-prong
electrical outlet capable of continuously
supplying 0.5 amperes at 100–240 VAC
(50–60Hz).
If the instrument is not grounded properly, its
operation may be impaired and a safety hazard
may exist. Verify that the outlet is appropriate
before operating your instrument.
Do not disable the grounding plug.
1.2 Unpacking the shipment
Table 1 lists the items contained in your shipment.
Qty Part # Description
1 Osmo1 Osmo1 Single-Sample Micro-
Osmometer
1 3M0825 20-µL Ease-Eject™ Sampler
1 -- Power cord
1 133005UG User Guide on USB drive
1 135007PM Warranty card
1 1112169 Barcode ID Tag Kit
Table 1: Osmo1 Single-Sample Micro-Osmometer packing list
NOTE: Advanced Instruments cannot guarantee the
stated instrument performance specifications and
accuracy of test results unless Advanced
Instruments brand consumables, standards, and
controls are used with the instrument.
• For information on obtaining Advanced
Instruments brand items, see “Supplies,
standards & controls” on page6.
• For information about Advanced Instruments
references and controls, see “Quality control”
on page7.
NOTE: Use of consumables, standards, or controls from
manufacturers other than Advanced Instruments is
not recommended and may adversely aect
system calibration, performance, operation, and
accuracy of test results.

Chapter 1 Installation and setup
17
Osmo1®Single-Sample Micro-Osmometer User Guide
Carefully unpack the instrument, accessories, and
supplies and inspect them for shipping damage. Use the
enclosed packing list to verify that all items are received.
1. If any item on the packing list appears to be missing
from your shipment, please search carefully through
and under all packing materials. If you don't find the
item, notify your receiving department immediately.
Advanced Instruments can only be responsible for
items reported missing within 10 days of a shipment
arrival.
2. Save the shipping boxes and packaging material for
future use if transport of the instrument becomes
necessary.
3. If you receive any damaged items, save the cartons
and packing material for inspection by the insurer.
You must notify both the dealer and Advanced
Instruments within 24 hours to ensure that your
warranty and insurance can be applied. Ask the
transportation company to inspect the items,
complete a “Report of Concealed Damage” and then
file your claim. Contact Advanced Instruments
immediately for repair or replacement of the items.
4. Complete the online warranty card to register your
product.
Figure 1 identifies the major components of your
osmometer, including:
• Sampler
• Sampler holder (a convenient resting place for the
sampler when it is not in use)
• Operating cradle
• Cooling chamber (inside)
• Touchscreen
• Barcode scanner
• Printer
• Micro-Sample Test Kit (contains 500 chamber
cleaners, 500 sampler tips, and one plunger wire)
Printer
Cooling chamber
(inside)
Sampler
Chamber
cleaners
Operating cradle
Barcode scanner
Micro-Sample
Test Kit
Plunger wire
Sampler tips
Touchscreen
Sampler holder
Figure 1: Osmo1 major components
1.3 Loading the printer paper
To prepare the instrument for use, install one roll of
paper as directed below.
1. Lift to open the printer door located on the top right
of the instrument.
2. Unroll 4-6" (15-20 cm) of thermal paper from the roll.
3. Hold the roll so that the paper feeds upwards from
the bottom of the roll towards the front of the
instrument, and place the roll into the printer. See
Figure 2
Feed paper
from bottom
Figure 2: Printer paper roll orientation, door open

Chapter 1 Installation and setup
18 Osmo1®Single-Sample Micro-Osmometer User Guide
4. Gently close the printer door with the unrolled paper
end outside the printer slot (Figure 3). The door
snaps closed.
NOTE: After the paper roll is installed, always use the
paper-advance button indicated in Figure 3 to
feed the paper through the printer rollers.
Pulling on the paper can damage the printer.
The instrument must be powered on for the
paper-advance button to work. (See
section1.6, “Powering up the instrument,” on
page19.)
Paper-advance button
Figure 3: Printer paper loaded, door closed
1.4 Placing the Micro-Sample Test Kit on the
instrument
The Micro-Sample Test Kit contains a supply of
consumables required for testing: 500 chamber cleaners,
500 sampler tips, and one plunger wire.
A Micro-Sample Test Kit must be in place on the top left
of the instrument before testing can begin. As shown in
Figure 4, the box must be oriented so that:
• The photo of the instrument and the box label are
toward the back.
• The dispensing flaps for the chamber cleaners and
sampling tips are toward the front.
If a Micro-Sample Test Kit is not in place on the
instrument when you attempt to run a test, you will
receive the error, “AI consumable box not detected.”
Figure 4: Micro-Sample Test Kit in correct position to begin testing
1.5 Connecting to a network (optional)
To connect the Osmo1 to a laboratory information
system (LIS) and/or to a local area network (LAN), plug
an Ethernet cable that connects to your network into the
Ethernet port on the back of the Osmo1 unit (Figure 5).
NOTE: You must also configure the communication
settings in the Osmo1 software. For more
information, see “Setting up LIS communication”
on page43 and “Configuring a LAN
connection” on page45.
Power switch
USB 2.0
Type B port
Ethernet port Plug for
power cord
USB 2.0
Type A port
Figure 5: Ethernet and USB ports

Chapter 1 Installation and setup
19
Osmo1®Single-Sample Micro-Osmometer User Guide
1.6 Powering up the instrument
1. Connect the power cord to the back of the
instrument (Figure 5) and insert the plug into the
power outlet.
2. Turn on power to the instrument using the rocker
switch on the back. Depress the side marked with
the symbol
When the unit powers up, the Welcome screen
displays (Figure 6).
Figure 6: Osmo1 Welcome screen
3. After a few moments, the Osmo1 Home screen
displays (Figure 7).
From the Home screen, you can initiate sample
testing and view the results. Initially, the instrument
status shown in the green status banner is
Osmometer Ready.
Figure 7: Osmo1 Home screen
1.7 Configuring the Osmo1 settings
This section outlines the instrument settings you should
review and/or configure before using the Osmo1. Each
step directs you to the relevant instructions in the
“Settings” chapter (page 35).
1. From the Home screen, navigate to the Settings
menu.
NOTE: For instructions, see “Accessing the Settings
menu” on page35.
2. If the unit’s language is not set appropriately for your
site, change the language settings.
NOTE: For instructions, see “Setting language” on
page37.
NOTE: For a language change to take eect, you
must power o the Osmo1, wait 10 seconds,
and then power on the instrument.
3. If the date or time displayed on the unit is incorrect,
set the current date and time.
NOTE: For instructions, see “Setting date and time”
on page36.
4. If desired, set up user accounts.
NOTE: User accounts enable you to track which users
perform which functions, and allow you to
restrict access to some functions. If you want
to use either of those capabilities, you must
set up user accounts.
NOTE: For instructions, see “Setting up user
accounts” on page37.
5. If desired, perform any or all of the following tasks:
• Assign restrictions for operator-level accounts.
• Set the password expiration period.
• Define whether the system will use 2-point or
3-point calibration.
• Configure the system to require a User ID and/or
SampleID before beginning a test.
NOTE: For instructions, see “Assigning restrictions”
on page46.

Chapter 1 Installation and setup
20 Osmo1®Single-Sample Micro-Osmometer User Guide
6. If desired, configure the Osmo1 to communicate with
your laboratory information system (LIS).
NOTE: For instructions, see “Setting up LIS
communication” on page43.
7. If desired, configure the Osmo1 to connect to your
local area network (LAN).
NOTE: For instructions, see “Configuring a LAN
connection” on page45.
8. If desired, set up control limits.
NOTE: For instructions, see “Establishing controls” on
page41.
9. When you have finished configuring the instrument,
tap the Home button on the Settings menu to return
to the Home screen.
Setup for the Osmo1 is now complete. If you want to
begin testing with the Osmo1 right away, you can skip to
Chapter 3, “Instrument operation” on page24.