Comments

Author Comment Last activity Moderation
Ag8n "Sorry. Truncated the internet address: Https://www.hydroponics.net/learn/debate_over_ec_and_tds.php " | Read more » over 6 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 » over 6 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 » over 6 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 » over 6 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 » over 6 years ago
Ag8n "Is there any specific information you are interested in? What do you want to do with the instrument? Thanks " | Read more » over 6 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 » over 6 years ago
Ag8n "Excellent project. Excellent data analysis. Sorry the project didn't work out the way you wanted. " | Read more » over 6 years ago
Ag8n "Haven't heard of that one. Thank you. I'll look it up! " | Read more » over 6 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 » over 6 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 » over 6 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 » over 6 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 » over 6 years ago
Ag8n "Thank you for your response. I'll try to keep everything in the original thread. " | Read more » over 6 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 » over 6 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 » over 6 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 » over 6 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 » over 6 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 » over 6 years ago
Ag8n "Ratio= (absorbance interesting area/absorbance uninteresting area ) " | Read more » over 6 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 » over 6 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 » over 6 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 » over 6 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 » over 6 years ago