Disinfectants (Sanitizers)

Choose the Proper Strip for Your Application

Make Sure Your Food, Restaurant or Healthcare Facility is Safe

Sanitizer Test Strips

Indigo™ sanitizer test strips for very low to very high levels for all your disinfection needs in restaurants, hospitals, schools, day care, agriculture and more.

Indigo™ Sanitizer Test Strips

Test strips for chemical sanitizers approved for the disinfection of food contact surfaces, hospitals, daycare, cruise ships and more include chlorine, hydrogen peroxide, quaternary ammonium compounds (QACs), peracetic acid & iodine.

More Information


Note that the 200ppm chlorine & 50ppm iodine are paper but other specs apply.

  • fast response time-just seconds
  • easy to read, accurate color charts
  • white backing ensures best contrast color chart comparisons
  • stiff plastic support for dipping into tubes, gaps, etc.
  • minimum 2 year shelf life if kept tightly closed
  • SDS data sheets available

Chlorine and quaternary ammonium sanitizers are by far the most important especially in food preparation. The table below lists their pros & cons. Peroxide use is more specialized for things like hot tubs and contact lens cleaners where skin/eye sensitivity can be an issue.


Pros Cons
Effective on a wide variety of bacteria Can be corrosive
Not affected by hard water Can be irritating to the skin
Generally inexpensive Deteriorates over time
  Loses some activity in the presence of organic matter



Pros Cons
Not affected by hard water Effectiveness decreases greatly with increase in pH
Less irritating to the skin than chlorine Should not be used in water > 50°C
Activity is not lost rapidly in the presence of organic matter May also discolor equipment and surfaces


Quaternary Ammonium Compounds (QAC):

Pros Cons
Nontoxic, odorless, colorless, noncorrosive, nonirritating Slower at killing some microorganisms
Relatively stable in the presence of organic matter Not compatible with some detergents
Active over a wide pH range Not compatible with hard water

Let our free Dilution Calculator take the guesswork out of preparing your cleaning solutions. Works with chlorine, iodine, quats, hydrogen peroxide and peracetic acid at any starting and ending concentration & volume needed.