NSF Product and Service Listings

These NSF Official Listings are current as of Thursday, January 15, 2026 at 12:15 a.m. Eastern Time. Please contact NSF to confirm the status of any Listing, report errors, or make suggestions.

Alert: NSF is concerned about fraudulent downloading and manipulation of website text. Always confirm this information by clicking on the below link for the most accurate information: http://info.nsf.org/Certified/Pools/Listings.asp?Company=C0005873&Standard=050&


NSF/ANSI 50
Equipment for Swimming Pools, Spas, Hot Tubs
and Other Recreational Water Facilities



 
TwinOxide International B.V. 
De Tongelreep 1-17
5684 PZ Best 
The Netherlands 
31 499 32 92 42
Visit this company's website

Facility : Best, The Netherlands

Chemicals
Trade Designation Function Max Use

Chlorine Dioxide Ingredients
TwinOxide® 0.3% Solution Disinfectants 50 mg/L

[1] Certified for health effect only.
[2] Certified for use at 50 mg/L in pool or spa water.
[3] This product is not Certified for performance claims.
[4] Component A and Component B are to be mixed following manufacturer's use instructions to
    produce a 0.3% chlorine dioxide solution. Certification applies to finished product.



Number of matching Manufacturers is 1
Number of matching Products is 1
Processing time was 0 seconds