| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Ag8n | "My apologies, but I still don't see where you are trying to go. The QCM will change frequency with weight. How is this going to work with the spec..." | Read more » | about 6 years ago | |||
| Ag8n | "Very interesting project. How do piezo products the into the product? Are you using ceramic or polymer piezo products? Good luck with your proje..." | Read more » | about 6 years ago | |||
| Ag8n | "I'm very surprised. I've spent many hours analyzing incoming raw material ( often times clays) usually for heavy metals. Clays are often the sour..." | Read more » | about 6 years ago | |||
| Ag8n | "Call them on the phone and talk to their salesman. Talk to tech services of you have to, but sales is usually better. A word of warning, the sale..." | Read more » | about 6 years ago | |||
| Ag8n | "That's a lot of money. Nir is using overtones of IR bands. So you might be able to get by with something like atr with an IR. Just can't see that..." | Read more » | about 6 years ago | |||
| Ag8n | "Frequently, in agriculture, near infra-red (NIR) is used, often for grain ananysis. One item is moisture. They will change the amount the farmer ..." | Read more » | about 6 years ago | |||
| Ag8n | "PH paper can have interferences. Oxidizers like bleach can mess them up. It doesn't take much (ppm). This should be rare but can happen around, sa..." | Read more » | about 6 years ago | |||
| Ag8n | "Google " epa method 180.1 determination of turbidity... ". It's dated August of 1993. Should get you started. " | Read more » | about 6 years ago | |||
| Ag8n | "Google epa method 180.1 turbidity by nephlometry. It's dated augu " | Read more » | about 6 years ago | |||
| Ag8n | "To give a few more details, a general lab certification is a2la ( american association of lab accreditation). Think that's right. There has been ..." | Read more » | about 6 years ago | |||
| Ag8n | "Yes, but the common way it is done is with gas chromatography (GC) or some variation like gas chromatography-mass spectrometry (GC-MS). In industry..." | Read more » | about 6 years ago | |||
| Ag8n | "This seems similar to some microscopes that use a CD or DVD player lense with a phone camera to act as a microscope. Built a couple with the dvd l..." | Read more » | about 6 years ago | |||
| Ag8n | "Strike 2. The place I was referred to intends to start class 100 k testing in the near future.... But not now. " | Read more » | about 6 years ago | |||
| Ag8n | "I've seen a bunch of different things used, but cuvette s are most common. " | Read more » | about 6 years ago | |||
| Ag8n | "I was on Amazon and found a bunch of pH meters under $20. Supposedly good from 0-14 pH, but that is very unlikely. Still, for the cost, it would ..." | Read more » | about 6 years ago | |||
| Ag8n | "If you are looking for 1 cm x 1 cm cuvettes , they should be transparent on all four sides. This way, they can be used for both turbidimeters and ..." | Read more » | about 6 years ago | |||
| Ag8n | "Let me do a little more research and get back to you. " | Read more » | about 6 years ago | |||
| Ag8n | "Copper and copper (I) oxide can be determined visually, based on color. Copper (II) oxide and copper sulfide, both of which are black, cannot be e..." | Read more » | about 6 years ago | |||
| Ag8n | "Hi Gretchen. Out of curiousity, what progress has been made on this question? Thanks. " | Read more » | about 6 years ago | |||
| Ag8n | "You hit the nail on the head with auto correct. Good luck with your project. " | Read more » | about 6 years ago | |||
| Ag8n | "There are several other previous questions that discuss this. But crazy is is correct, all tds meters are conductivity meters. One side note- ther..." | Read more » | about 6 years ago | |||
| Ag8n | "I think stoft (see above) has some good suggestions. Calibrating more often is also a good idea. Better standards, Holmium oxide for example, wou..." | Read more » | about 6 years ago | |||
| Ag8n | "Sorry, I didn't finish the instrument explanation. After determining the size of a particle,most instruments find out how many particles are great..." | Read more » | about 6 years ago | |||
| Ag8n | "Yeah, that is part of the question. The medical devices had direct access to the blood stream and lungs. So particle number and size was critical..." | Read more » | about 6 years ago |