Hach POCKET COLORIMETER II User manual

59570-88
POCKET COLORIMETER™II
ANALYSIS SYSTEMS
INSTRUCTION MANUAL
Chlorine (Cl2)
© Hach Company, 2006. All rights reserved. Printed in the U.S.A. te/dk 09/06 3ed

1—2
Important Note
This manual is intended for use with the following Pocket Colorimeter™ II
instrument: Chlorine (Cl2) Cat. No. 59530-00

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
Chlorine, Free and Total, LR...........................................................................1—15
Measuring Hints ...............................................................................................1—15
Accuracy Check................................................................................................1—27
Interferences......................................................................................................1—29
Method Performance........................................................................................1—30
Chlorine, Free and Total, HR..........................................................................1—31
Measuring Hints ...............................................................................................1—31
............................................................................................................................1—38
Accuracy Check................................................................................................1—39
Interferences......................................................................................................1—41

1—4
Table of Contents, continued
Method Performance........................................................................................1—42
Spec√™ Secondary Standards for DPD Chlorine.....................................1—43
Using the Spec√Standards..............................................................................1—44
Summary of Method..........................................................................................1—45
Replacement Parts..............................................................................................1—46
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
Error Codes..............................................................................................................2—9
Error Messages ....................................................................................................2—9

1—5
Table ofContents,continued
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: ± 0.0015 Abs
Filter bandwidth: 15 nm
Wavelength: 528 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: 1 cm (10 mL), 25 mm (10 mL)
Operating conditions: 0 to 50 °C (32 to 122 °F); 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
InstrumentKeysandDisplay
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
Chlorine,FreeandTotal,LR (0.02 to 2.00 mg/L Cl2)
Method 8021 (Free)
For water, treated water, estuary water, and sea water
Method 8167 (Total)
For water, treated water, wastewater, estuary water, and sea water
DPD Method*
USEPA accepted for reporting drinking water analyses**
(free and total chlorine) and wastewater analyses** (total chlorine only)
Measuring Hints
• Analyze samples immediately. Do notuse plastic containers to collectsamples.
• Forbestresults,dedicateasetofcellsto eachfreechlorineandtotalchlorinetest.
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 USEPA method 330.5 for wastewater and Standard Method
4500-Cl G for drinking water.

1—16
Chlorine, Free and Total, LR, continued
Using Powder Pillows (USEPA accepted for reporting)
1.Fill a 10-mL cell with
sample (the blank). Cap.
Note:
Samples must be
analyzed immediately and
cannot be preserved for
later analysis.
2.Press the POWER key to
turn the meter on.
The arrow should indicate
the low range channel (LR).
Note: See page 2—4 for
information on selecting
the correct range channel.
3.Remove the meter cap.
Place the blank in the cell
holder with the diamond
mark facing the keypad.
Fit the meter cap over the
cell compartment to cover
the cell.
Note:
Wipe excess liquid
and finger prints off
sample cells.

1—17
Chlorine,Free and Total, LR,continued
4.Press ZERO/SCROLL.
The display will show
“- - - -” then “0.00”.
Remove the blank from the
cell holder.
5.Fill a second 10-mL cell
to the 10-mL line with
sample.
Note:
Do not use the same
sample cells for free and
total chlorine analysis
without thoroughly rinsing
the cells with sample
between free and total
tests.
6.Add the contents of one
DPD Free Chlorine Powder
Pillow or one DPD Total
Chlorine Powder Pillow to
the sample cell (the prepared
sample).
Note:
SwifTest™
Dispensers for Free or Total
Chlorine can be used in
place of powder pillows.
See Using the SwifTest™
Dispenser (USEPA accepted
for reporting) on page 1—
23.

1—18
Chlorine, Free and Total, LR, continued
7.Cap and shake gently for
20 seconds.
Note:
Shaking dissipates
bubbles that may form in
samples with dissolved
gases.
Note: A pink color will
develop if chlorine is
present.
8.For free chlorine, place
the prepared sample cell in
the cell holder. Cover with
the instrument cap and
proceed to step 10 within
one minute after adding the
DPD Free Pillow.
Note:
Accuracy is not
affected by undissolved
powder.
Note: Wipe off sample
cells.
9.For total chlorine, place
the prepared sample in the
cell holder and cover the cell
with the instrument cap.
Wait three to six minutes
after adding the DPD Total
Pillow.
Proceed to step 10.

1—19
Chlorine,Free and Total, LR,continued
10. Press READ/ENTER.
The instrument will show
“- - - -” followed by the
results in mg/L chlorine.
Note: If the sample temporarily turns yellow after reagent
addition, or if the display shows overrange (page 2—12) dilute
a fresh sample and repeat the test. A slight loss of chlorine
may occur because of the dilution. Multiply the result by the
appropriate dilution factor.

1—20
Chlorine, Free and Total, LR, continued
Using AccuVac®Ampuls (USEPA accepted for reporting)
1.Fill a 10-mL sample cell
with sample (the blank).
Cap. Collect at least 40 mL
of sample in a 50-mL
beaker.
Note:
Empty AccuVac
Ampuls are available for
use as blanks. See
OPTIONAL REAGENTS on
page 1—47.
2.Press the POWER key to
turn on the meter.
The arrow in the display
should indicate the low
range channel (LR).
See page 2—4 for
information on selecting the
correct range channel.
3.Remove the instrument
cap. Place the blank in the
cellholder,withthediamond
mark facing the keypad.
Cover the cell with the
instrument cap.
Note:
Wipe liquid and
finger prints off sample
cells.