| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Ag8n | "Sorry. Truncated the internet address: Https://www.hydroponics.net/learn/debate_over_ec_and_tds.php " | Read more » | almost 7 years ago | |||
| Ag8n | "Check out: Https://www.hydroponics.net/lear All tds meters are conductivity meters, but according to the article, they may not all use the same c..." | Read more » | almost 7 years ago | |||
| Ag8n | "I think it is. Was hoping someone was more familiar than me. Different websites talk about charge and others about conductivity, which can be two..." | Read more » | almost 7 years ago | |||
| Ag8n | "The spectrum won't match. White LEDs don't produce constant light over the whole visible spectrum, unless you get expensive ones. There is typica..." | Read more » | almost 7 years ago | |||
| Ag8n | "I have never met a conductivity meter that doesn't have some amount of drift. Having said that, the commercial conductivity meter at work was a lo..." | Read more » | almost 7 years ago | |||
| Ag8n | "Is there any specific information you are interested in? What do you want to do with the instrument? Thanks " | Read more » | almost 7 years ago | |||
| Ag8n | "Near the top of this page is a tag labelled "spectrometer". Tap on that to start. Once you are in that spectrometer info, you will see a link " t..." | Read more » | almost 7 years ago | |||
| Ag8n | "Excellent project. Excellent data analysis. Sorry the project didn't work out the way you wanted. " | Read more » | almost 7 years ago | |||
| Ag8n | "Haven't heard of that one. Thank you. I'll look it up! " | Read more » | almost 7 years ago | |||
| Ag8n | "The current epa method for turbidity, with standard prep, is at: Https://epa.gov/sites/production/files//2015-08/documents/method_180-1_1993.pdf ..." | Read more » | almost 7 years ago | |||
| Ag8n | "Don't know if it will work with the foldable spectrometer or your software. But here is some work done not long ago on the same topic. You can fi..." | Read more » | almost 7 years ago | |||
| Ag8n | "Thank you for the question. To answer this, you will have to go where no man has gone before. There are a number of concerns. For example, cdom..." | Read more » | almost 7 years ago | |||
| Ag8n | "Thank you for your answer. There are a lot of questions about color, interferences, number of tests being done, etc. That we could go back and for..." | Read more » | almost 7 years ago | |||
| Ag8n | "Thank you for your response. I'll try to keep everything in the original thread. " | Read more » | almost 7 years ago | |||
| Ag8n | "What do you think of the ones that are transparent on all four sides? That way the cuvettes can be used for trans, abs, flores, or turbidity. The..." | Read more » | almost 7 years ago | |||
| Ag8n | "Metals usually take instruments like atomic absorption (AA) or inductively coupled plasma (ICP). These instruments can NOT be done easily on the P..." | Read more » | almost 7 years ago | |||
| Ag8n | "Thank you for your reply. I looked at the paper referenced. The pump modifications look very good! Glad to hear you are in the validation phase...." | Read more » | almost 7 years ago | |||
| Ag8n | "It sounds like Warren answered the question. I can give some more background. Proteins contain nitrogen, which isn't present in many other milk c..." | Read more » | almost 7 years ago | |||
| Ag8n | "There are two approaches to this, the hardware and software. Sounds like you took care of the hardware end very well. Can you think of any softwa..." | Read more » | almost 7 years ago | |||
| Ag8n | "Ratio= (absorbance interesting area/absorbance uninteresting area ) " | Read more » | almost 7 years ago | |||
| 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 | |||
| Ag8n | "Only one suggestion then. Sunlight can be strong. As a safety measure, partially block the sun and work your way up to full exposure. Might not ..." | Read more » | almost 7 years ago | |||
| Ag8n | "Here are some calculations. Don't know if they will help... Btw, I noticed the halogen, and would suggest holding on to it. At least until other t..." | Read more » | almost 7 years ago | |||
| Ag8n | "Excellent data!! What direction are you headed for analysis? Absorbance, transmittance, reflectance, or some of the ratio stuff done with other a..." | Read more » | almost 7 years ago |