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Author Comment Last activity Moderation
DavidMack "@gpenzo the 2 ft. of chain would serve as the counter weight, then the chain would connect to a rope which is connected to an anchor. the foam dis..." | Read more » over 7 years ago
DavidMack "Here's one of the EPA source sampling methods: select method 316 in the pick list here for the purified DI water capture method:" | Read more » over 8 years ago
DavidMack "It sounds like a novel approach to breakdown formaldehyde. However, if you're in a situation whereby outdoor air is cleaner than indoor air, would..." | Read more » over 8 years ago