LaMotte 2050-DW6 User manual

ColorQ Photometer for Drinking Water

For software Version 5.73 or higher

To insure proper testing results.

Insert tubes into ColorQ with line

and arrow facing forward.

Sun = Shade meter from bright

sunlight. Press/Hold button to
turn o .

Er7 =Tube is misaligned or

scratched, or light chamber is
stained. See Users Guide for
more instructions.

Brush and rinse all tubes

promptly after use.

Rinse tablet crusher between test

factors.

Allow tubes to dry before

returning to case.

Replace reagent caps securely.

Use only LaMotte replacement

reagents and ColorQ test tubes
Code 0201.

If unit should auto-o during

testing rinse and Þ ll one tube to
Blank and return to testing.

To skip test in the sequence press

button to advance past that test
factor.

To turn meter o at any time,

press and hold the button until
o is displayed.

bAt = battery is low.

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1. Fill sample bottle with water sample. Replace cap.

2. Fill clean tube (#0201) to the 5mL line with water sample.

3. Insert tube into ColorQ as shown.

4. Press button to turn meter on. When bLA appears press button to
Blank the meter, and go to pH. Remove tube.

pH - Code 7059-E

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+

*Hardness 1 Buffer: Code 7045-G

Hardness 2 Indicator: Code 7046-G

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*Iron IG- Code 3725A-H

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DPD#1 IG - Code 6903A-H
DPD#3 IG - Code 6197A-H

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*Sulfide Reagent A: Code V-4458LWT-G

*Sulfide Reagent B: Code V-4459-E

Sulfide Reagent C: Code 4460LWT-G

+

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*Nitrate IG - Code 3884A-H

18

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Read all instructions before testing.

If not testing all tests in the sequence, follow

blanking procedure and then press button
until desired test factor is shown. Follow test
procedure.

In one complete inversion, the tube will be

turned cap down and then right side up. The air
bubble will move slowly to the bottom of the
tube and back again to the cap end.

If small bubbles form after adding reagents,

tap bottom of tube sharply once or twice to
dislodge bubbles. Bubbles will interfere with
the test results.

Samples with concentrations greater than the

range of the reagent system must be diluted.
Add 2.5 mL of sample water to a test tube. Fill
to the 5 mL line with distilled or deionized
water. Cap and mix. Blank with the diluted
sample. Follow the test procedure with the
diluted sample. Multiply the displayed result by

2. (This will not work for the pH test).

Be sure the outside of the tubes are dry before

putting them into the ColorQ. This is best
accomplished by dispensing the water sample
from the sample bottle.

Clean ColorQ optics with a damp cotton swab.

Avoid abrasive cleaners that can damage
plastic.

Do not use the test tube brush to clean the

ColorQ meter chamber.

Replace stained or scratched tubes (0201).

Always rinse tubes and caps after testing.

Reagent left behind can a ect the next test or
stain the tube.

Replace liquid reagents annually. To learn more

about reagent storage guidelines and shelf-life
go to Support Section then Reagent ReÞ lls/
Shelf Life at www.lamotte.com.

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