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 disinfection of food contact surfaces, hospitals, daycare, cruise ships and more include chlorine, hydrogen peroxide, quaternary ammonium compounds (QACs), peracetic acid & iodine. Now with 3 year expiration guarantee!

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 3 year shelf life if kept tightly closed
  • SDS data sheets available
There are many ways to sanitize, sterilize or disinfect objects. Autoclaves use steam under pressure to sterilize scissors, tweezers, scalpels and glassware but are not practical for hard surfaces such as floors, countertops, dishes, door knobs and so on.

These require chemical disinfectants which can be sprayed or applied by cloth or mop. No one chemical disinfectant is ideal for every situation. Here are some criteria to help decide what’s best for you.

The disinfectant should be broad spectrum and have a wide antimicrobial spectrum that can kill bacteria, fungi and viruses quickly. They should also have a residual effect by leaving an antimicrobial film on the treated surface.

They should not be compromised by organic matter such as blood, sputum and feces or interact with soaps, detergents or other chemicals used in your workplace. They have to be easy to use with clear label directions and be non-toxic for you, patients or customers without having a need for safety related PPE.

They need to be hard surface compatible which means they won’t corrode metal instruments, sinks or countertops and not cause the breakdown of cloth, rubber, plastics, and other materials.

Disinfectants should be odorless or have a pleasant odor and be economical to use routinely. This generally means they are available as concentrates that can be diluted in water and are stable for extended periods. They should be environmentally friendly and not cause harm to plants or animals when disposed.

Chlorine and quaternary ammonium sanitizers are by far the most important especially for hard surface disinfection & where food is prepared. 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.