The DVGW 9191 - Anti-Scale standard uses the worlds strictest guidelines to determine the effectiveness of a system to prevent scale using Worksheet W 510. W510 combines 3 testing requirements that all systems must pass: 1) Structural Integrity, 2) Microbiological Testing (W 270 and KTW tests) and 3) Performance in Scale Prevention (W512). Unlike the NSF acceptable passing level of 50% for performance claims, the DVGW protocol for scale prevention performance (W 512) requires 80% or better to pass. In order to obtain a certification under DW-9191 with test report W 510 you must pass at least 4 separate tests, plus the W 510 requirements. The W510 test simulates over 2 years of normal customer water usage (200,000+ gallons), making it one of the most comprehensive anti-scale standards in the world. Watch the comparison video and see for yourself.
As part of the Pelican Natursoft line of products, we submitted one of our anti-scale Natursoft system to the DVGW for certification under the DVGW 9191. The 9191 is already the most difficult and all-encompassing test in the world for anti-scale, requiring a minimum of 80% to pass, however we wanted to challenge ourselves even more. The system submitted by Pelican put Natursoft into the most challenging test parameters the DVGW could certify and the results speak for themselves. Having passed all 5 requirements of the 9191, Pelican's Natursoft system submitted for testing was certified by the worlds highest anti-scale standard with a performance rating of 99.6%. Using the success of the Pelican Natursoft system that passed DVGW 9191, Pelican developed a full line of Natursoft products providing proven, tested 99.6% scale prevention from small cartridge systems up to high flow light commercial and everything in-between. Take a look at our certification for yourself.