Pooltester for the measurement of pH and Chlorine or Bromine and pH values.
8 pH scale values,
16 Chlorine / Bromine scale values

Number of measurement chambers: 2

Reagents:
RAPID (tablets):
Phenol Red (30)
DPD N ° 1 (30)

Measurement Ranges:
pH-value (pH): 6.8 - 8.2
Chlorine (free) (Cl2 mg / L): 0.1 - 6.0
Chlorine (total) (Cl2 mg / L): 0.1 - 6.0
Chlorine (Combined) (Cl2 mg / L): 0.1 - 6.0
Bromine (Br mg / l): 0.22 - 2.13

Product Features:

- The tester is suitable for free active chlorine and bromine, pH and (with a special procedure) chlorine-dioxide level measurement.
- Chlorine concentration is measured between 0.1 and 6 mg/l. Under 1 mg/l (so within the ideal range) the tester can measure the values with 0.1 accuracy.
- The right hand side scale measures until 6 mg/liter of chlorine, so it makes possible to perform the measurement even in case of shock-treatment or overchlorination.
- For bromine measurement the same colour scales are used, bromine levels are shown by smaller numbers.
- pH can be measured between 6.8-8.2 with 0.2 steps.
- the practical set contains 30 pcs. of Phenolred tablets, and DPD 1 tablet for the measurement of free active chlorine.
- The tester is also suitable for the measurement of compound chlorine. In this case you will also need DPD3 tablets that are not part of the basic set!

pH-MEASUREMENT:
1. Take off the grey cap.
2. Submerse the container 20 cms under water.
3. Put one Phenolred tablet into the left compartment (second small compartment).
4. Cover the container with the cap and shake until tablets dissolve.
5. Compare the colour of the left water compartment to the colour scale and read the pH value.

Measurement of free active chlorine level:
1. Take off the grey cap.
2. Submerse the container 20 cms under water.
3. Put 1 DPD 1 tablet into the right compartment (fourth compartment).
4. Wait for two minutes for the perfect dissolution.
5. Read the free active chlorine value (mg/l) by comparing the right compartment to the colour scale. To define chlorine and bromine levels you can use 2 columns.
In the left one (with pink cells) you can measure values with larger accuracy 0.1-1. In the right you can measure between 0.5 and 6.

Tip: the two measurement can be performed at a time

Measurement of combined chlorine:
Combined chlorine: free active chlorine reacts with the substances in water and chlorine-amines are created. Regarded the ability of disinfection, the quantity of free active chlorine is more important than that of combined chlorine, although the typical swimming-pool smell is caused by the high level of combined chlorine. On a long-term basis, compounds created by combined chlorine can be harmful for the health. If there is no combined chlorine in the water, there is no swimming-pool smell. High levels of combined chlorine can be reduced by replacing a part of the poolwater with fresh water.

1. Measure the free active chlorine level by a DPD1 tablet.
2. Read the value and write it down.
3. Take new water sample and put one DPD1 and one DPD3 tablets.
4. Read the value and like this, you have the value of TOTAL CHLORINE.
5. The level of combined chlorine can be calculated by a simple deduction process:

Combined chlorine = total chlorine – free chlorine

The measurement container can be cleaned with the help of a brush and some fresh water.

Measurement of chlorine-dioxide:
1. Take some sample from the poolwater into the compartment C1.
2. Fully dissolve 1 GLYCINE tablet with the help of a tablet cracker.
3. After one minute put 1 pc. of DPD1 tablet into the cuvette and dissolve it by shaking or with the help of a tablet cracker.
4. Wait for a 30 sec to 1 minute period after the dissolution of tablets.
5. Compare the pink colouring to the reference-scale.
6. Divide the read free active chlorine value by two, this will be the chlorine-dioxide concentration of the water in mg/l.

Any oxidants being in the water can cause disturbance, Glycine can only eliminate the disturbance caused by free active chlorine. Measurement can only be used until 1 mg/l free active chlorine.

The chlorine-dioxide level in water should be minimum 0.05 mg/l, the maximum allowed level is 0.4 mg/l. In case of continuous use, the recommended chlorine-dioxide concentration should be 0.1-0.2 mg/l.

Auxiliary chemicals:
- DPD 1 tablet (free chlorine) 1 pc.
- DPD 3 tablet (combined chlorine) 1 pc.
- Phenolred tablet (pH) 1 pc.
- FotoPooL Glycine tablet (chlorine-dioxide) 1 pc.
- FotoLovib Glycine tablet

Alternative products:
- Chlorine/pH test-strip - simple measurement
- Chlorine/pH mini tester - easy-to-use scale, good price
- Chlorine-dioxide (Dinadox) test-strip - easy-to-use scale, good price