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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: http://www.epa.gov..." | 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 |