Monday, November 2, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
527 reviews
CyclopureSelect a line to read only those reviews.
Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Cyclopure is a materials science and environmental engineering firm headquartered in Evanston, Illinois. The company has developed a novel adsorbent (tradename DEXSORB®) with high selectivity for diverse PFAS structures, regardless of chain length, structure, or functional group. DEXSORB is commercialized for multiple PFAS related uses, including (i) environmental monitoring, (ii) household filtration products, and (iii) municipal + industrial treatment systems.
Cyclopure (cyclopure.com) has 527 customer reviews on The Fair Hearing, with an average rating of 4.7 out of 5.
527 approved reviews, newest moderated first
It would be a help to have and interpretation of the ppt information you provide. Your results report identified 7.2ppt of PFOA and 29.3ppt total PFAS, but I do not know how dangerous these amounts are.
By Becca G.
I recently learned that PFAs were an issue in my water. I used Cyclopure to test for PFAs before and after introducing a new filter. I had 30 days to return the filter if I determined it didn't do the job. Cyclopure tested the water before and after filtration. Cyclopure showed that I want from at least 8 ppt, to non measurably low levels of PFAs using the filter. They tested well within the 30 day return period. I am very pleased.
By Steven
I ordered two water test kits. They arrived with a handwritten note with clarification on shipping both tests. Return shipping was easy as a result, results were fast, results were easy to understand, and follow up correspondence was prompt and clear. Excellent company to work with!
By Penny A.
Easy sample taking at WWTP Lelystad, The Netherlands en quick results. Good service!
By Remmie Neef/Waterschap Z.
Kit arrived quickly after order, instructions are clear, test is easy, shipping of sample is prepaid and uses same box, and test results came approx. 10 business days later by email, as promised. I am very pleased.
By Brian D.
Thank you for your quick service.
By Jacki V.
Cyclopure is amazing! Their WTK is affordable and easy. They even tested some compost for us that came from a facility shut down because of PFAS contamination at no charge! How many businesses would offer to do something like that?!
By Erik S.
