Hach POCKET COLORIMETER II User manual

59576-88
POCKET COLORIMETER™II
ANALYSIS SYSTEMS
INSTRUCTION MANUAL
Reactive Phosphorous
Phosphonates
© Hach Company, 2006. All rights reserved. Printed in the U.S.A. te/dk 9/06 2ed

1—2

1—3
Table of Contents
Safety Precautions...............................................................................................1—7
Laboratory Safety...............................................................................................1—7
Use of Hazard Information................................................................................1—7
Precautionary Labels..........................................................................................1—8
Specifications.........................................................................................................1—9
Instrument Keys and Display...........................................................................1—11
Instrument Cap Cord.........................................................................................1—12
Phosphorus, Reactive........................................................................................1—15
Using Powder Pillows (USEPA accepted for reporting)...............................1—16
Using AccuVac® Ampuls (USEPA accepted for reporting) ........................1—20
Sampling and Storage......................................................................................1—24
Accuracy Check................................................................................................1—24
Interferences......................................................................................................1—25
Method Performance........................................................................................1—27
Summary of Method........................................................................................1—28
Reagents and Apparatus..................................................................................1—28
Digestion for Total Phosphorus.....................................................................1—31
Measuring Hints ...............................................................................................1—31

1—4
Table of Contents, continued
Sampling and Storage......................................................................................1—35
Interferences......................................................................................................1—35
Summary of Method.........................................................................................1—36
Reagents and Apparatus..................................................................................1—37
Phosphonates........................................................................................................1—39
Sampling and Storage......................................................................................1—47
Accuracy Check.................................................................................................1—47
Standard Calibration Adjust Method..............................................................1—49
Interferences......................................................................................................1—49
Summary of Method.........................................................................................1—51
Reagents and Apparatus..................................................................................1—52
Instrument Operation..........................................................................................2—3
Key Functions......................................................................................................2—3
Menu Selections..................................................................................................2—4
Switching Ranges................................................................................................2—4
Setting the Time..................................................................................................2—4
Recalling Stored Measurements........................................................................2—5
Battery Installation.............................................................................................2—6

1—5
TableofContents,continued
Error Codes..............................................................................................................2—9
Error Messages....................................................................................................2—9
Standard Calibration Adjust..........................................................................2—13
User-Entered Calibration ................................................................................2—15
Overview............................................................................................................2—15
Calibration Procedure Using Prepared Standards........................................2—17
Entering a Predetermined Calibration Curve................................................2—20
Editing a User-entered or Factory Calibration Curve..................................2—22
Exiting the Calibration Routine......................................................................2—24
Deleting Calibration Points.............................................................................2—24
Retrieving the Factory Calibration.................................................................2—25
Maximum/Minimum Displayed Value...........................................................2—26
Certification..........................................................................................................2—28
How to Order........................................................................................................2—35
Repair Service......................................................................................................2—37
Warranty................................................................................................................2—38

1—6

1—7
SafetyPrecautions
Please read this entire manual before unpacking, setting up, or operating this
instrument. Pay particular attention to all danger and caution statements. Failure
to do so could result in serious injury to the operator or damage to the equipment.
To ensure the protection provided by this equipment is not impaired, do not use or
install this equipment in any manner other than that which is specified in
this manual.
Laboratory Safety
As part of good laboratory practice, please familiarize yourself with the reagents
used in these procedures. Read all product labels and the material safety data
sheets (MSDS) before using them. It is always good practice to wear safety glasses
when handling chemicals. Follow instructions carefully. Rinse thoroughly if
contact occurs. If you have questions about reagents or procedures, please contact
the manufacturer or distributor.
Use of Hazard Information
If multiple hazards exist, this manual will use the signal word (Danger, Caution,
Note) corresponding to the greatest hazard.

1—8
Safety Precautions, continued
DANGER
Indicates a potentially or imminently hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that may result in minor or
moderate injury.
NOTE
Information that requires special emphasis.
Precautionary Labels
Please pay particular attention to labels and tags attached to the instrument.
Personal injury or damage to the instrument could occur if not observed.
This symbol, if noted on the instrument, references the instruction manual
for operational and/or safety information.

1—9
Specifications
Lamp: Light emitting diode (LED)
Detector: Silicon photodiode
Photometric precision: ± 0.015 Abs
Filter bandwidth: 15 nm
Wavelength: 600 nm
Absorbance range: 0–2.5 Abs
Dimensions: 3.2 x6.1 x15.2 cm (1.25 x2.4 x6 inches)
Weight: 0.2 kg (0.43 lbs)
Sample cells: 25 mm (10 mL mark), AccuVac®Ampuls
Operating conditions: 0 to 50 °C; 0 to 90% relative humidity (noncondensing)
Power supply: Four AAA alkaline batteries; approximate life is 2000 tests*
* Backlight usage will decrease battery life.

1—10
OPERATION
DANGER
Handling chemical samples, standards, and reagents can be dangerous. Review the necessary
Material Safety Data Sheets and become familiar with all safety procedures before handling
any chemicals.
DANGER
La manipulation des échantillons chimiques, étalons et réactifs peut être dangereuse. Lire les Fiches
de Données de Sécurité des Produits (FDSP) et se familiariser avec toutes les procédures de sécurité
avant de manipuler tous les produits chimiques.
PELIGRO
La manipulación de muestras químicas, estándares y reactivos puede ser peligrosa. Revise las fichas
de seguridad de materiales y familiarícese con los procedimientos de seguridad antes de manipular
productos químicos.
GEFAHR
Das Arbeiten mit chemischen Proben, Standards und Reagenzien ist mit Gefahren verbunden. Es
wird dem Benutzer dieser Produkte empfohlen, sich vor der Arbeit mit sicheren Verfahrensweisen
und dem richtigen Gebrauch der Chemikalien vertraut zu machen und alle entsprechenden
Materialsicherheitsdatenblätter aufmerksam zu lesen.
PERIGO
A manipulação de amostras, padrões e reagentes químicos pode ser perigosa. Reveja a folha dos
dados de segurança do material e familiarize-se com todos os procedimentos de segurança antes
de manipular quaisquer produtos químicos.
PERICOLO
La manipolazione di campioni, standard e reattivi chimici può essere pericolosa. La preghiamo di
prendere conoscenza delle Schede Techniche necessarie legate alla Sicurezza dei Materiali e di
abituarsi con tutte le procedure di sicurezza prima di manipolare ogni prodotto chimico.

1—11
InstrumentKeys and Display
Item Description
1POWER/BACKLIGHT Key
2ZERO/SCROLL Key
3MENU Key
4 Numeric Display
5 Range Indicator
6 Range Indicator
7 Menu Indicator
8 Calibration Adjusted Indicator
9 Battery Low Indicator
10 READ/ENTER Key

1—12
InstrumentCapCord
The instrument cap for the Pocket Colorimeter™ II doubles as a light shield.
Accurate measurements cannot be obtained unless the sample or blank is covered
with the cap. Use the instrument cap cord to secure the cap to the body of the
colorimeter and prevent loss of the cap. See Figure 1 on page 1—13.
1. Loop the instrument cap cord through the ring on the cap.
2. Remove the battery compartment cover. Press the knotted end of the cord into
the hole indicated by the arrow.
3. Slide the cord into the slot on the battery compartment cover. Snap the cover
into place.

1—13
Instrument Cap Cord, continued
Figure 1 Attaching the Instrument Cap Cord

1—14

1—15
Phosphorus, Reactive (0.02 to 3.00 mg/L PO43–)
(Also called Orthophosphate) Method 8048
For water, wastewater, and seawater.
PhosVer®3 (Ascorbic Acid) Method*
USEPA accepted for reporting**
Measuring Hints
• For more accurate results, determine a reagent blank for each new lot of
PhosVer 3 reagent. Perform steps 1–10 using deionized water as the sample.
Subtract this value from each result obtained with the same lot of PhosVer 3
reagent.
• The optional AccuVac®Snapper simplifies testing by retaining the broken tip,
minimizing exposure to the sample, and providing controlled conditions for
filling the ampule.
Note: The Pocket Colorimeter II is designed to measure solutions contained in sample cells.
DO NOT dip the meter in the sample or pour the sample directly into the cell holder.
* Adapted from Standard Methods for the Examination of Water and Wastewater.
** Procedure is equivalent to Method 365.2 for wastewater and Standard Method 4500-P-
E for drinking water.

1—16
Phosphorus, Reactive, continued
Using Powder Pillows (USEPA accepted for reporting)
1.Fill a 10-mL cell to the
10-mL line with sample.
Note:
If samples cannot be
analyzed immediately. See
Sampling and Storage on
page 24.
2.Add the contents of one
PhosVer 3 Powder Pillow to
the cell (the prepared
sample). Immediately cap
and shake 10–15 seconds.
Note:
Wipe off any liquid or
finger prints.
3.Wait at least 2 min. (but
less than 10 min.) for full
color development before
completing steps 4–10.
Note:
If the sample was
digested using the Digestion
for Total Phosphorus
(page 1—31), allow 10 min.
for color development.
HRS MIN SECHRS MIN SEC

1—17
Phosphorus,Reactive, continued
4.Fill a second sample cell
with 10 mL of sample (the
blank). Wipe off any liquid
or fingerprints.
5.Press the POWER key to
turn the meter on.
The arrow should indicate
channel 1.
Note: See page 2—4 for
information on selecting the
correct channel.
6.Place the blank into
the cell holder.
Cover the sample cell with
the instrument cap.

1—18
Phosphorus, Reactive, continued
7.Press: ZERO/SCROLL
The meter will show
“- - - -”, followed by
“0.00”.
Remove the blank.
8.Place the prepared
sample into the cell holder
with the diamond mark
facing the keypad.
Cover the sample cell with
the instrument cap.
9.Press: READ/ENTER
The meter will show
“- - - -”, followed by the
results in mg/L phosphate
(as PO43–).

1—19
Phosphorus,Reactive, continued
10. Subtract the reagent
blank from the reading for
true concentration.
Note: To convert results to
other units, use the
conversion table (Table 1).
Table 1
To convert reading
from To Multiply by
mg/L PO43– mg/L P2O50.747
mg/L PO43– mg/L P 0.326

1—20
Phosphorus, Reactive, continued
Using AccuVac® Ampuls (USEPA accepted for reporting)
1.Fill a 10-mL sample cell
to the 10-mL line with
sample (the blank). Cap.
Collect at least 40 mL of
sample in a 50-mL beaker.
2.Fill a PhosVer®3
Phosphate AccuVac®Ampul
with sample.
Note:
Keep the tip of the
ampule immersed until the
ampule fills completely.
3.Place an ampule cap
securely over the tip of the
ampule. Invert the ampule
10–15 seconds to mix. Wipe
off any liquid or
fingerprints.