K-7512 Oxygen

Dissolved Oxygen Testing Visual Kit

Measure oxygen 0-12 ppm

Replacement ampoules for the K-7512 Test Kit can be found here.

Oxygen Information

2-5 business days

Why Choose CHEMetrics Chemets kits?

CHEMetrics Chemets self-filing 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


     -1 25 mL Sample Cup

     -Instruction Manual



The K-7512 CHEMets Visual Kit is visual indicator kit for measuring oxygen in water levels from 0-12.  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.


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. Dry the ampoule and wait 1 minute for color development. 4. To obtain results place the ampoule between the color standards, moving it along the comparator until you can determine the closest match.


More CHEMetrics Kits for Oxygen:

Product Number Method   Range
K-7553 Rhodazine D   0-1.000 ppm
K7503 Indigo Carmine   0-2.00 ppm
K7513 Indigo Carmine   0-15.0 ppm
I2002 Indigo Carmine   0-15.0 ppm
Chemets Kits
Product Number Method MDS Range
K7511 Rhodazine D 2 ppb 0-20 ppb
K7540 Rhodazine D 2.5 ppb 0-40 ppb
K7599 Rhodazine D 5 ppb 0-100 ppb
K7518 Rhodazine D 5 ppb 5-180 ppb
K7501 Rhodazine D 0.025 ppm 0-1 ppm
K7512 Indigo Carmine 1 ppm 1-12 ppm



K-7512/R7512 Instructions

Safety Data Sheet

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
Range 0-12 ppm
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