Water I.D. Primelab 2.0, Manual

Page: 183 / 301

(35)
Nitrite LR
0.00 - 0.50 mg/l (N)
Powder Pack
Internal Name: 35-Nitrite-LR-tab
10ml
Nitrite LR Photometer (PPPNiLR)
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 Add 1 Nitrite LR Photometer powder pillow to the sample water in the cuvette.
8 Stir with the stirring rod for about 20 seconds until the reagent is completely dissolved.
9 Screw the lid back on the cuvette.
10 Insert the cuvette into the PrimeLab. Pay attention to the arrow on the front of the cuvette.
11 Tap TEST to start a 10:00 minute(s) countdown.
12 After the lapse of a 10:00 minute(s) countdown the measured value is displayed.
Notes:
The test result can be converted into the following unit(s): mg/l NaNO₂, mg/l NO₂⁻.
T128/204 T128/204