GBL® AQUA-ROSA

7033-Chlorine pH Test, DPD Colorimetric

Title Description
REF No 7033
Purpose Determine the pH, free chlorine, and total chlorine levels in various waters by measuring the intensity of the pink color formed with the DPD reagent using a color scale.
Ingredients A-pH Indicator:
B-Neutralization Solution:
C-Buffer Solution:
D-Chlorine Indicator:
E-Total Chlorine Reagent:
Working Principle
Warnings, Precautions, Recommendations Danger. Highly flammable liquid and vapor. Keep away from heat/sparks/flames/hot surfaces. IF ON SKIN (or hair): Immediately remove all contaminated clothing. Rinse skin with water/shower. Causes severe skin burns and eye damage. Toxic if swallowed. May cause respiratory irritation.
Application Measuring the pH of Water:
1. Take the measuring cup from your kit.
2. Pour the water sample to be tested up to the 10 ml mark.
3. Hold the A-pH Indicator bottle at a 90-degree angle with the dropper opening. Make sure the drops are not air bubbles. Add 2 drops to the sample, close the cap, and stir 2 times.
4. Determine the pH of the water by comparing the color in the cup with the pH color scale.
5. If the pH is above 8.00, add the B-Neutralization Solution drop by drop, following the color scale in your hand, until the pH reaches around 7.00. Remember how many drops you added. If the pH is not above 8.00, you do not need to add this B-Neutralization Solution.
Measuring Free Chlorine in Water:
1. Take the measuring cup from your kit.
2. Add the water sample to be tested up to the 10 ml mark.
3. Add the number of drops of B-Neutralization Solution determined above. Close the cap and mix.
4. Open the cap and add 8 drops of C-Buffer Solution. Close the cap and mix.
5. Open the cap and add 2 drops of D-Chlorine Indicator. Close the cap and mix. Read after 3 minutes. Compare the reading with the chlorine color scale. Record the ppm value read.
Measuring Total Chlorine:
1. Take the measuring cup from your kit. After measuring free chlorine, add 2 drops of E-Total Chlorine Separator to the same sample cup. Close the lid and mix.
2. After 30 seconds, read by comparing with the chlorine color scale. If there is no color change, total chlorine is equal to free chlorine.
Measuring Bound Chlorine (Chloramine):
1. Subtract the free chlorine amount from the total chlorine amount.
2. This shows the remaining bound chlorine (chloramine) amount.

Bound Chlorine (Chloramine) = Total Chlorine - Free Chlorine
Theoretical Results
Related Media
Shelf Life 1 years.
Shelf Life After Opening the Lid
Storage Temperature 5/25 °C
pH (at 25°C)
Transportation Information
Ordering and Packaging Information
Order No Unit Volume Packaging Type Quantity in a Box
457033030020 Adet 50 mL 50 ml, HDPE Damlalıklı Beyaz Şişe 20 set

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