Water I.D. Primelab 2.0, Manual

Page: 121 / 301

(158)
Cyanide
0.01 - 0.50 mg/l (CN⁻)
Reagent-Kit
Internal Name: 158-Cyanide-pow
10ml
Cyanide Kit (PL158-Kit)
Measurement procedure:
1 Fill 8 ml of distilled water into a clean 24 mm cuvette.
2 Add exactly 2 ml sample water to the same cuvette.
3 Screw the lid back on the cuvette.
4 Swivel the cuvette back and forth for 5 times.
5 Insert the cuvette into the PrimeLab. Pay attention to the arrow on the front of the cuvette.
6 Start ZERO measurement.
7 Remove the cuvette again.
8 Unscrew the lid from the cuvette.
9 Add 2 spoons of PL Cyanide-11 (powder) to the sample water in the cuvette.
10 Screw the lid back on the cuvette.
11 Swivel the cuvette back and forth for 5 times.
12 Add 2 spoons of PL Cyanide-12 (powder) to the sample water in the cuvette.
13 Screw the lid back on the cuvette.
14 Swivel the cuvette back and forth for 5 times.
15 Add 3 drop(s) of PL Cyanide-13 into the cuvette.
16 Screw the lid back on the cuvette.
17 Gently swirl the cuvette to mix the liquid well.
18 Tap TEST to perform the measurement.
19 After the lapse of a 10:00 minute(s) countdown the measured value is displayed.
Notes:
Reagents should be stored at temperatures of 15 °C to 25 °C.
This method only detects free cyanides and cyanides which can be destroyed by chlorine.
Cyanide must be separated (distillation) before performing the test in case thiocyanate,
colorants, heavy metal complexes or aromatic amines are present.
T66/204 T66/204