R-7870 Sodium Persulfate

K-7870 Persulfate Kit was designed to obtain Persulfate levels from 0-5.6 ppm and 7-70 ppm.

Persulfate Information


The K-7870 Persulfate Kit was designed to accurately measure the levels of Persulfate in water from 0-5.6 ppm and 7-70 ppm. K-7870 uses the Ferric Thiocyanate Method. CHEMetrics' persulfate test kit employs the ferric thiocyanate method. In an acidic solution, persulfate osidizes ferrous iron. The resulting ferric ion reacts with ammonium thiocyanate to form ferric thiocyanate, a red-orange colored complex, in direct proportion to the persulfate concentration. Chlorine does not interfere with this chemistry. Ferric iron, hydrogen peroxide, and ozone will interfere. Results are expressed in ppm (mg/L) sodium persulfate (Na2S2O8). 

Persulfate is a strong oxidizer that is commonly used for clarifying swimming pools and spas and for the destruction of a broad range of soil and groundwater contaminants. Sodium persulfate is frequently used for environmental applications. 

R-7870 Refill Package includes 30 tests and can be purchased separately.

What's included:

  • 30 Ampoules
  • Comparators (Low and High Range)
  • 25 mL Sample Cup
  • Instruction Manual



How to use:

  1. Add 25 mL of the sample to the sample cup.Fill the sample cup to 25ml
  2. Insert the ampoule tip first into the sample, and snap the ampoule tip.
  3. Mix ampoule by inverting several timesTip the vacu-vial back and forth to mix
  4. Dry the ampoule, and wait 1.5 minutes for color development.
    Dry vacu-vial and then insert into the I-2019
  5. Obtain results using the appropriate comparator and finding the best color match. 


K-7870 Instructions

Persulfate Tech Sheet

Persulfate Information


WARNING! This product can expose you to chemicals including 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 Persulfate
4-20 mA Output No
Voltage Output None
Power Requirements 4 AAA Batteries
Datalogging No
Warranty 1 Year
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