visocolor ECO Chlorine 1 Test Kit Instruction Manual
- June 4, 2024
- visocolor ECO
Table of Contents
visocolor ECO Chlorine 1 Test Kit Instruction Manual
Method
At a pH value of 6.2 to 6.5 in a phosphate buffered system, free chlorine reacts with N,N-diethyl-1,4-phenylene diamine (DPD) and forms a red-violet dye. In the presence of iodide ions, the content of total chlorine (free and combined chlorine together) can be determined
Measurement range:
0.1–2.0 mg/L Cl2
*Contents of test kit (refill pack):**
sufficient for 150 tests
- 6 g Cl2-1*
- 30 mL Cl2-2*
- 1 measuring spoon 70 mm*
- 2 screw-plug measuring glasses
- 1 slide comparator
- 1 color chart
- 1 plastic syringe 5 mL
- 1 instruction for use*
Hazard warning:
Information regarding safety can be found on the box’ label and in the safety
data sheet. You can download the SDS from www.mn-net.com/SDS
Instructions for use:
Also refer to the pictogram on the back of the color chart
Free chlorine
- Pour a 5 mL water sample into each of the measuring glasses using the plastic syringe (the pH value of the sample must be between pH 4 and 8.) Place a measuring glass on position A in the comparator.
- Only add the reagent to measuring glass B.
- Add 1 level measuring spoon of Cl2-1, seal the glass and shake well for 20 s.
- Open the glass after 1 min and place it on position B in the comparator.
- Slide the comparator until the colors match in the inspection hole on top.
- Check the measurement reading in the recess on the comparator reed.
- Mid-values can be estimated.
- Total chlorine
- Add 3 drops of Cl2-2. Seal the glass and mix.
- Open the glass after 2 min, place it on position B in the comparator and read off the chlorine value as described above.
- After use, rinse out both measuring glasses thoroughly and seal them.
- Combined chlorine
- The content of combined chlorine can be calculated as the difference between total and free chlorine.
- The reagents can be used also for the photometric evaluation with pho- tometers PF-3 / PF-12 and PF-12 Plus.
- This technique can be used also for analyzing sea wate
Disposing of the samples:
Information regarding disposal can be found in the safety data sheet. You can
download the SDS from www.mn-net.com/SDS
Interferences
The determination of free chlorine measures bromine, bromine, chloramine, iodine, and, in part, chlorine dioxide as well. Higher manganese com- pounds simulate free chlorine. Chlorine concentrations above 10 mg/L can bleach the red reaction color (low results). Rinse glass tubes several times thoroughly. Residues of Cl2-2 can cause higher values for free chlorine. Determination of bromine besides chlorine: If chlorine is present in the sample, it can be destroyed by adding a spatula of glycine (approx. 20 mg) to 25 mL sample. The sample for the bromine determination is taken from this solution. Result in mg/L Cl2 x 2.25 = mg/L Br2
Conversion table
mg/L Fe mmol/m3
- 0.04 0.7
- 0.07 1.3
- 0.10 1.8
- 0.15 2.7
- 0.20 3.6
- 0.30 5.4
- 0.50 9.0
- 1.0 18
For swimming pools (in Germany) please note:
If the content of free chlorine is below 0.3 mg/L, add some chlorinating
reagent. If the content is above 0.6 mg/L, add fresh water. The ideal pH value
is 7.4.
Storage
Store the test kit in a cool (< 25 °C) and dry place.