Methods; Chlorine - ProMinent DULCOTEST DT4 Instrucciones De Servicio

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Methods

0.0.0
Zero
Test
Cl
R E S U L T R E S U L T
R E S U L T
Zero
Test
Cl
R E S U L T R E S U L T
R E S U L T
Chlorine 0,05 - 6,0 mg/l
(a) Free Chlorine
Perform zero calibration (see "Operation").
Empty the vial. Hold the drip bottle vertically and add evenly sized
drops to the vial by pressing slowly (6 drops of DPD 1 buffer
solution, 2 drops of DPD 1 reagent solution). Add the water sample
to the 10 ml mark. Screw the cap on, swirl to mix, and replace the
vial in the compartment making sure the ∇ and ∆ marks are aligned.
Press the ZERO/TEST key.
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l free chlorine.
(b) Total Chlorine
Immediately after measurement, add 3 drops of DPD 3 solution to
the coloured test solution. Replace the cap, swirl to mix, and put the
vial back into the sample chamber, repositioning the ∇ and ∆ marks.
Wait for a colour reaction time of two minutes!
Press the ZERO/TEST key.
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l total chlorine.
(c) Combined Chlorine
Combined Chlorine = Total Chlorine - Free Chlorine
0-1 mg/l: ± 0.05 mg/l
Tolerance:
> 1-2 mg/l: ± 0.10 mg/l
> 2-3 mg/l: ± 0.20 mg/l
> 3-4 mg/l: ± 0.30 mg/l
> 4-6 mg/l: ± 0.40 mg/l
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