| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Ag8n | "You know, there is a type of visible reflectance done often. It's the type used for paint matching in hardware stores and other similar places. T..." | Read more » | about 6 years ago | |||
| Ag8n | "The most common place for reflectance work is in infra-red(IR) and near infra-red (NIR) work. In the NIR, this is called NIRR. With IR, the most ..." | Read more » | about 6 years ago | |||
| Ag8n | "Thank you for your reply. The problem is in the midwest/great lakes area. This is fresh water. For whatever reason, there has been an overly hig..." | Read more » | about 6 years ago | |||
| Ag8n | "My background is mostly industrial- specifically pharmaceutical. So much of the testing was guided by something like The USP. The instruments were..." | Read more » | about 6 years ago | |||
| Ag8n | "Sorry for the delay in answering. Spectroscopy is used many places in industry and medicine. For example, a variation of visible spectrometry is ..." | Read more » | about 6 years ago | |||
| Ag8n | "Is there anyway the water temperature can be measured? In one of these cases, the claim was that the DO was lower due to increased temperature. T..." | Read more » | over 6 years ago | |||
| Ag8n | "I agree that the original data should be used. But, if the sanity check is not zero, that result should also be recorded, or at least noted. " | Read more » | over 6 years ago | |||
| Ag8n | "My major concern is about water. Yes, we have 5 gal jugs of water on hand. But only a few of them. We live in a rural area, and in a power outag..." | Read more » | over 6 years ago | |||
| Ag8n | "It has been strange to track FEMA over the years. Initally, say 30 years ago, they said you needed three days of food and water. Then it changed ..." | Read more » | over 6 years ago | |||
| Ag8n | "The problem is the dilute vinegar they provide won't penetrate all materials ( i.e. Not all kinds of paint, not all kinds of plastic, etc.). So yo..." | Read more » | over 6 years ago | |||
| Ag8n | "Nice sharp lines on the neon spectrum! Good job! " | Read more » | over 6 years ago | |||
| Ag8n | "Thank you for the answer! " | Read more » | over 6 years ago | |||
| Ag8n | "As for what method can do soil, paint, water, etc. Edxrf has a big problem with water. Water absorbs xrays. You can get around this by evaporati..." | Read more » | over 6 years ago | |||
| Ag8n | "As for what method can do soil, paint, water, etc. Edxrf has a big problem with water. Water absorbs xrays. You can get around this by evaporati..." | Read more » | over 6 years ago | |||
| Ag8n | "As for difficulty: Worst is ICP- ME ICP-OES GFAA AS EDXRF Wet chemical Easiest Many of the wet chemical methods can only detect heavy metals as le..." | Read more » | over 6 years ago | |||
| Ag8n | "Read- ICP-MS is the premier method.no doubt. But you pay for it. I'm second place is ICP-OES (ICP-optical emission spectrometry). Pretty much th..." | Read more » | over 6 years ago | |||
| Ag8n | "I'd be happy to help. Give me some time to look it over. I've worked extensively with EDXRF, but mostly the desktop (read R&D) variety. Only..." | Read more » | over 6 years ago | |||
| Ag8n | "I've done a lot of lead testing. This was mostly by atomic absorption (AA), in an industrial situation. The specs have changed. The lead levels ..." | Read more » | over 6 years ago | |||
| Ag8n | "The air testing you did, that had something in it, but nothing that would hurt you. Are those reports available? And not just " no significant l..." | Read more » | over 6 years ago | |||
| Ag8n | "It's listed on Amazon as the Atlas Scientific EZO-DO. It is listed at $46.00. It talks by uart, so a Pi might work. Atlas Scientific should have ..." | Read more » | over 6 years ago | |||
| Ag8n | "Still photos 4032 x 3024. There is a cheaper version as well, the u-808. Less expensive and less resolution. Also weighs a little less. It cost..." | Read more » | over 6 years ago | |||
| Ag8n | "Video quality is listed as 1920 by 1080 at 30 fps. " | Read more » | over 6 years ago | |||
| Ag8n | "That's hd camera / recorder. The link is : Https:www.apogeerockets.com/electronics-payloads/cameras/u-838-hd-video-camera " | Read more » | over 6 years ago | |||
| Ag8n | "The recommended limit of pfoa + pfos is 70 parts per trillion (!). That's recommended, it's not enforced. The method of analysis is by LC/MS/MS. ..." | Read more » | over 6 years ago |