K-2511 Chlorine

Dissolved Chlorine Testing Visual Kit

Measure chlorine 0-0.20 ppm

Chlorine Information


The K-2511 ULR CHEMets Visual Kit is visual indicator kit for measuring chlorine in water levels from 0-0.20 ppm.  This device uses the DPD Method for testing. Free chlorine oxidizes DPD (N,N-diethyl-p-phenylenediamine) to form a pink colored species in direct proportion to the chlorine concentration. Total chlorine, the sum of free and combined chlorine, is determined by adding an excess of potassium iodide to the sample. Chloramines (combined chlorine) oxidize the iodide to iodine. The iodine then oxidizes DPD to the pink colored species. Other halogens, ozone and halogenating agents will produce high test results. Chlorine at concentrations significantly above the test range may prevent proper color development, causing low test results.

This is a visual color comparing test kit for inexpensive dissolved chlorine measurement. The refill kit R-2511 can be purchased for more tests.

What's included:

  • Comparator
  • Refill 
  • Activator Solution
  • 25 mL sample cup
  • Instruction manual


How to use the K-2511:

Instructions for Ozone water testing using the K-7404



  1. To test, add 5 drops of Activator Solution to the sample cup (For Total Chlorine Only).
  2. Fill the 25 mL sample cup with your sample water.Fill the sample cup to 25ml
  3. Snap the end/tip of the ampoule in the water on the bottom/side of the 25 mL sample cup.Snap the tip of the ampoule on the bottom and side of the sample cup
  4. Mix the contents of the ampule by tipping back and forth a few times.Tip the vacu-vial back and forth to mix
  5. Dry the ampoule and wait 1 minute for color development.Dry vacu-vial and then insert into the I-2019
  6. Obtain the test result by matching to the corresponding color comparator.
  7. For the low range comparator: Place the ampoule, flat end first, into the comparator.  Hold the comparator up towards a light source and view from the bottom. Rotate the comparator until the best color match is found.


K-2511/R2511 Instructions

K-2511/R-2511 Tech Sheet

Chlorine Information


WARNING! This product can expose you to chemicals including formaldehyde, which is known to the State of California to cause cancer, and methanol, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

More Information
Manufacturer CHEMetrics
Call For Price No
Gas Chlorine (Cl2)
4-20 mA Output No
Voltage Output None
Power Requirements None
Datalogging No
Warranty 1 Year
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