Why Visual Cleanliness Is Not Enough
A surface can look clean and still harbor dangerous levels of biological contamination. Pathogens like Staphylococcus aureus, E. coli, influenza viruses, and norovirus can be present on surfaces in concentrations sufficient to cause infection — yet remain completely invisible to the naked eye.
This is why forward-looking facility management organizations have adopted ATP (Adenosine Triphosphate) testing as an objective, science-based method for verifying surface cleanliness beyond what visual inspection can confirm.
How ATP Testing Works
ATP is a molecule found in all living cells — including bacteria, viruses, fungi, and food residues. ATP testing devices use a bioluminescence reaction to detect the presence of ATP on a surface, producing a measurable light signal quantified as Relative Light Units (RLU).
The process is simple:
- A technician swabs the target surface with a test device.
- The swab is inserted into a handheld luminometer.
- Within seconds, an RLU reading is displayed — the lower the score, the cleaner the surface.
- Results are recorded and compared against baseline thresholds established for the facility type.
Industry benchmarks for commercial facilities typically set a "pass" threshold at RLU ≤ 200, while healthcare environments may require RLU ≤ 100 or stricter for critical areas.
Where ATP Testing Should Be Applied
High-touch and high-risk surfaces are the priority:
- Door handles, push plates, and exit bars
- Elevator buttons and handrails
- Breakroom: microwave touchpads, refrigerator handles, faucet handles, counter surfaces
- Restroom: sink faucets, toilet flush handles, soap dispensers, paper towel dispensers
- Conference rooms: table surfaces, A/V equipment controls
- Healthcare: bed rails, IV poles, nurse call buttons, patient room surfaces
How Summit Integrates ATP Testing Into QA Programs
Summit Facility Solutions incorporates ATP surface verification into quality assurance programs for eligible clients. Results are documented within the eHub platform — our proprietary digital QA system — providing clients with:
- Historical RLU trend data by surface and location
- Automatic flags for surfaces that fail to meet threshold RLU targets
- Corrective action workflows triggered by ATP failures, with re-test verification
- Exportable compliance documentation for regulatory audits, OSHA reviews, and insurance purposes
This means you're not just taking our word for it — you have the data to prove it.
Demand More Than a Clean-Looking Facility
Summit Facility Solutions delivers cleaning programs backed by ATP verification, digital QA reporting, and ISSA-trained technicians. When compliance and occupant health matter, data-driven cleaning is the standard.