| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Ag8n | "The older usp method was based on hydrogen sulfide. This was later changed to a thioacetamide based test. This is better, but still not good. The..." | Read more » | about 6 years ago | |||
| Kshatrya | "If you are looking for specific metals, there should be some reagent that will precipitate or indicate that metal. But if you're looking for all th..." | Read more » | about 6 years ago | |||
| Kshatrya | "If you are looking for specific metals, there should be some reagent that will precipitate or indicate that metal. But if you're looking for all th..." | Read more » | about 6 years ago | |||
| Ag8n | "I like energy dispersive X-Ray florescence (EDXRF). It's non-distructive, low power, and relatively cheap. On the down side, it's hard to calibra..." | Read more » | about 6 years ago | |||
| warren | "Re: responses written with @gretchengehrke and others as part of DIY Oil Testing Questions: According to the Surfrider group, which sent many oil ..." | Read more » | over 6 years ago | |||
| ernestbolds | "At this time I will just say that it is an material that is reoccurring in my immediate environment (an community apartment building) and I do beli..." | Read more » | about 11 years ago | |||
| warren | "Huh, here is a link for where to buy such bags: http://www.alertsecurityproducts.com/evidence-bag/index.shtml " | Read more » | about 11 years ago | |||
| warren | "Hi, Ernest - what kind of sample is it? A water sample? Where did it come from? What do you suspect it contains and why? Our community's spectrom..." | Read more » | about 11 years ago |