K-2504 Chlorine

Dissolved Chlorine Testing Visual Kit

Measure chlorine 0-1ppm & 0-5ppm

Replacement ampoules for the K-2504 Test Kit can be found here.

Chlorine Information

2-5 business days

Why Choose CHEMetrics Chemets kits?

CHEMetrics Chemets self-filling reagent ampoules are a great way to test for dissolved substances in liquids. These visual test kits allow you to obtain results by measuring the color of the sample according to the color comparators provided with the kit. This unique method allows you to attain results quickly and accurately with minimal contact with potentially hazardous materials.

Safe and Reliable Results:

While traditional methods often require multiple steps and thorough preparation, these test kits allow you to obtain dependable results with a few simple steps. By simplifying the testing method, Chemets test kits reduce the potential for operator error. Additionally, each of the ampoules contained in the test kits is vacuum sealed which helps eliminate the problem of obtaining inaccurate results from stale or unstable reagents. These reagents are stored right in the tip of each ampoule and sealed in glass, thereby minimizing direct contact with the chemicals.

What's Included:

     -30 self-filling Ampoules

     -low and high-range comparators 

     -1 25 mL Sample Cup

     -Activator Solution

     -1 mL syringe

     -Instruction Manual



The K-2504 CHEMets Visual Kit is visual indicator kit for measuring chlorine in water levels from 0-1 and 0-5ppm.  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.


1. Fill the sample cup to the 25 mL mark with the sample to be tested. 2. Place the ampoule tip-first into the sample cup. Snap the tip and the ampoule will automatically fill.
3. To mix the ampoule, tilt it from side to side, allowing the bubble to travel from end to end. 4. Dry the ampoule and wait 1 minute for color development.
5. Place the ampoule into the center of the round comparator and hold it toward a source of light, viewing from the bottom. Rotate the comparator until the color below the ampoule shows the closest match. 6. For higher concentrations, use flat comparator. Place the ampoule between the color standards, moving it along the comparator until you can determine the closest match.

For more detailed instructions, see the link at the bottom of the page.

More CHEMetrics Kits for Chlorine:

Product Number Method   Range
K2523 DPD (free)   0-5.0ppm
K2513 DPD (free and total)   0-5.0ppm
Chemets Kits
Product Number Method MDL Range
K2511 DDPD (free & total) 0.04 ppm 0-0.20 ppm
K2504 DPD (free & total) 0.05 ppm 0-1 & 0-5 ppm
Product Number Method MDL Range
K2504D DPD (free & total) 2.5 ppm 0-25 & 0-125 ppm
K2504A DPD (free & total) 5 ppm 0-50 & 0-250 ppm
K2504B DPD (free & total) 10 ppm 0-100 & 0-500 ppm
K2504C DPD (free & total) 40 ppm 0-400 & 0-2000 ppm



K-2500/R2500 Instructions

Safety Data Sheet

Chlorine Information

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
Range 0-1ppm & 0-5ppm
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