Tuesday, November 3, 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
I never received my test results
By customer
Response from Cyclopure· Jul 25, 2026
HI John, your results were sent to you on July 21 coming from the email address [email protected]. Perhaps they ended up in spam. We received your sample on 7/8, so your turn around time was 9 business days. I've forwarded the report again. If you have a minute please confirm receipt. Thank you!
Fast and communicated nicely.
By customer
That was easy to do easy to order and I got a quick response on the results
By customer
You got my first sample from my home here on the East Coast switched with a person‘s sample from the West Coast with severe PFAS contamination. Luckily I caught this very serious error and you very considerately sent a replacement kit to me which came back absolutely clean for PFAS.
By P. B.
Response from Cyclopure· Jul 10, 2026
Peter, apologies for the confusion and inconvenience. As we discussed by phone, this occurred because the Water Test Kit Pro was purchased on eBay. The original purchaser (your seller) bought multiple kits; the customer record, barcodes, and test kit data all remained in our system under the original purchaser. There are several reasons why you should always, and only, purchase test kits directly from Cyclopure. First, is to ensure that all information for tracking your sample is tied to the name and address provided on the order. Second, when buying from a third party (which is not authorized by Cyclopure), you do not know if the test kit has been handled properly, possibly opened and exposed to some kind of contamination. Direct chain of custody between you and Cyclopure is broken. Because of these problems, we sent you a replacement kit at no charge. It is a cautionary tale … test products should always be purchased from the authorized vendor and not on secondary platforms like eBay.
Easy to order and use Helpful and easy to interpret results Understandable options moving forward
By Laura D C.
I purchased a water test sometime ago and recently sent in the test in the box with the label as instructed and the package was returned unable to deliver-return to sender. I have reached out to Cyclopure twice and I am still waiting for a response back.
By John
Response from Cyclopure· Jul 5, 2026
Hello John - We moved to larger lab space in December 2024. We announced the move for several months via email and on the website. My guess is you used the old return label that came with your purchase almost two years ago. Plesae write to us at [email protected] and we will be happy to email you an updated prepaid return label. We answer the phone at 312-639-5009 if you have any further questions. Thank you!
The test results arrived in the time promised. They were very thorough and well explained. I did have one area of concern with my PFAS levels, but that was highlighted to focus my attention. Thank you
By Bear C.
Response from Cyclopure· Jul 3, 2026
Hi Bear, Your results were sent to this email address on June 30, 2026, at 10:01 AM coming from the address [email protected]. Could they have ended up in spam? Your test was analyzed within 8 business days. I will send again from my personal work email address. If you have a minute, please confirm receipt. Thank you!
They were prompt and efficient
By MARIA DE H.
