R2A Is Best for Those Who...
How R2A Works
Sample and Send
Simply fill up your vial, fill out your submission form, and prepare it for shipping. We provide overnight shipping so your samples arrive at our office the very next day.
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Receive and test.
Once we receive your test kit, our lab techs get to work analyzing your samples. R2A requires an incubation period, so your results will be ready in 7 days.
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Access Your Results
The ProEdge Clear™ Waterline Compliance Dashboard makes it easy to access your results and key data-insights so your office is always waterline compliant.
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What Customers Are Saying About ProEdge
“We just hit the highest we've ever had, which is a 98% pass rate.”
“Their expertise significantly enhanced the health and safety standards of the dental practices and schools that I work with.”
Monica Satake, CDA, EFDA, CDIPC, B.S.Ed., M.H.E
"It was important to me to bring on a real compliance program."
“Highly recommend ProEdge for any dental office that prioritizes patient safety and wants reliable, efficient service!”
Lizeth, Current ProEdge Customer
R2A Video Resources
Waterline Testing
How to test with a Mail-In Water Test Kit

Waterline Testing
How to Take a Pooled or Combined Water Test Sample

Waterline Maintenance
The 3 Steps to Safe Waterlines Protocol

R2A Toolkits
R2A Frequently Asked Questions
Still Need Help?
What is R2A?
R2A, or Reasoner’s 2 Agar, is a plated sample method that uses an agar plate. A sample is plated, put on a spinner, and left to incubate for 7 days, providing a specific CFU count per sample.. Although R2A has traditionally been the go-to for mail-in testing, dentistry is progressing and offers more advanced, quicker mail-in testing options, like Flow Cytometry. To learn more about Flo, click here.
R2A is:
• A standard waterline test
• More precise than Simplate and in-office testing methods
• Used for accrediting waterline test results
Do repeat tests needs to fill out the full submission form?
Yes! Each mail-in testing form must be completely filled out, regardless of if you’ve tested with ProEdge before. This ensures that your office information is current in our system and verifies that each vial is correctly labeled with the corresponding operatory, guaranteeing the accuracy of your results.
Why are my vials already numbered?
Mail-in test kits come with pre-numbered vials correlated to the spaces on the submission form, and not with your operatory. On the submission form, make sure to use the space next to the correlating vial number to indicate the operatory you took the samples from.
Should I test my source water?
Usually, it’s only recommended to test your source water if you have experienced repeat failures that you cannot seem to successfully remediate. Otherwise, it may be nice to know the state of your source water through testing, but it’s not necessary, especially if you’re passing tests regularly.
How do I access my test results?
You will receive an email when your test results are ready to view! Your mail-in test results will always be available on your ProEdge Clear™ account. Simply login and click on Past Test Cycles under Practice Reports.


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