Water I.D. Primelab 2.0, Manual

Page: 107 / 301

(103) Chromium
(hexavalent)
0.00 - 1.00 mg/l (Cr⁶⁺)
Powder Can
+ Liquid
Internal Name: 103-Chromium-liq
10ml
PL Chromate 1 (PLpow40Chromate1)
PL Chromate 2 (PL65Chromate2)
Measurement procedure:
1 Fill 10 ml test water into a clean 24 mm cuvette.
2 Screw the lid back on the cuvette.
3 Insert the cuvette into the PrimeLab. Pay attention to the arrow on the front of the cuvette.
4 Start ZERO measurement.
5 Remove the cuvette again.
6 Unscrew the lid from the cuvette.
7 Empty the cuvette to a few drops.
8 Add 1 x 0.05 ml PL Chromate 1 scoop(s) powder to the sample water in the cuvette.
9 Add 15 drop(s) of PL Chromate 2 into the cuvette.
10 Stir with the stirring rod for about 20 seconds.
11 Fill the cuvette to 10 ml with the sample water.
12 Screw the lid back on the cuvette.
13 Gently swirl the cuvette to mix the liquid well.
14 Insert the cuvette into the PrimeLab. Pay attention to the arrow on the front of the cuvette.
15 Tap TEST to start a 05:00 minute(s) countdown.
16 After the lapse of a 05:00 minute(s) countdown the measured value is displayed.
Notes:
The test result can be converted into the following unit(s): mg/l CrO₄²⁻.
T52/204 T52/204