PRO-Clean™ Protein Residue Test


A quick and easy swab test for contamination on equipment surfaces in food or beverage industries.
Verify cleaning, check critical points (HACCP) and identify potential food safety hazards.

PRO-Clean™ is a self-contained consumable swab test that does not require any extra equipment, special expertise or long incubation periods.

Fast and reliable results are visible through a colour change within one to ten minutes. This means that you can take immediate corrective action if there is a hygiene problem.

How is protein residue a test for cleaning efficiency?

Protein is harder to remove from surfaces than glucose or other residues, making it a good indicator of surface contamination.


  • Determine the cleanliness of countertops and production surfaces / machines in the food industry
  • Training of cleaning personnel – allows them to see the unseen potential for bacteria in the colour change

PRO-Clean Protein Residue Test: Instructional Video from Hygiena on Vimeo.


  • Range: 20 – 80 µg protein
  • Results visible in 1 – 10 minutes, depending on the level of sensitivity required
  • Simple, quick way to monitor HACCP / quality assurance programme
  • Easy to see colour change to purple if protein residue is present
  • The more contamination, the faster the colour change and the darker the colour change
  • Self-contained consumable device; no other equipment is needed
  • No special training is required to use the PRO-Clean test
  • Easy-to-release Snap Valve
  • Write-on swab tube


  • 80 µg protein after 1 minute
  • 50 µg protein after 5 minutes
  • 20 µg protein after 10 minutes
  • Contains pre-moistened swab bud with patented Snap-Valve™ technology
  • 18 months shelf life at room or refrigerated temperatures (2 – 25°C)

Contains 100 PRO-Clean™ tests


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