K-7503 Oxygen

Dissolved Oxygen Testing Visual Kit

Measure oxygen 0-2 ppm

Oxygen Information


The K-7503 CHEMets Instrumental Kit is visual indicator kit for measuring oxygen in water levels from 0-2 ppm.  The I-2002 Dissolved Oxygen Meter is designed for accurately and quickly measuring oxygen in water levels from 0 - 15.0 ppm. This device uses the Indigo Carmine Method for testing.  In an acidic solution, oxygen oxidizes the yellow-green colored leuco form of indigo carmine to form a highly colored blue dye. The resulting blue color is proportional to the dissolved oxygen concentration in the sample. The results are displayed on the monitor in ppm (mg/L) Oxygen present.

*This kit requires the use of a CHEMetrics Direct-Readout Photometer or a spectrophotometer capable of accepting a 13 mm diameter round cell. CHEMetrics product I-2002 is created specifically to use with K-7503.

The cost per test is $1.12.


What's included:

  • Comparator (0-12ppm)
  • R-7503 Oxygen Visual Ampoules (30 tests)
  • Blank ampoule
  • 25 mL sample cup
  • Sampling Tube
  • Adhesive Mounting Clamp
  • Permanent Mounting Clamp
  • Instruction manual


How to use the K-7503:

Instructions for Ozone water testing using the K-7404



  1. Fill the 25 mL sample cup with your water.Fill the sample cup to 25ml
  2. 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
  3. Mix the contents of the ampule by tipping back and forth a few times.Tip the vacu-vial back and forth to mix
  4. Dry the ampoule and wait 2 minutes for color development.Dry vacu-vial and then insert into the I-2019
  5. Obtain the test result by matching to the corresponding color comparator.




K-7503 Instructions

K-7503 Tech Sheet

Oxygen Methods

Oxygen Information

More Information
Manufacturer CHEMetrics
Call For Price No
Gas Oxygen (O2)
4-20 mA Output No
Voltage Output None
Power Requirements None
Datalogging No
Warranty 1 Year
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