Waterlogic‘s latest water dispensers with Firewall UV technology will be unveiled at WQA Aquatech USA, 08 Mar – 11 Mar 2001, in San Antonio, Texas. As mentioned by the company, the machines have achieved a double-certification whammy – attaining both the stringent NSF (National Sanitization Foundation) 55 class A standard for Ultraviolet Microbiological Water Treatment Systems and the rigorous NSF Protocol P231 for Microbiological Water Purifiers. What does it means? I think only the machines know the number. But in customers’ readable words, it means the highest levels of drinking-water purification. What your words?