| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Ag8n | "Could someone double check on xrf for h2s? Xrf works on electrons closest to the nucleus. It could detect sulfur, but not h2s unless paired with ..." | Read more » | almost 7 years ago | |||
| warren | "Sounds like that was $100? " | Read more » | almost 7 years ago | |||
| warren | "@sara and @gretchengehrke have mentioned the "Corrosion Coupon" badge which uses both copper and silver -- I posted a question looking for some mor..." | Read more » | almost 7 years ago | |||
| Bronwen | "Here's something that looks like 2 tests for $30 (page is a little light on information beyond that) http://chemsee-foods.com/H2S-KT1 " | Read more » | almost 7 years ago |