Comments

Author Comment Last activity Moderation
Ag8n "Sorry, that should be UAT, not UAB. Look up UAT. " | Read more » almost 4 years ago
Ag8n "Ok. There are two easy aircraft tracking systems, ADSB and UAB. ADSB is commonly used on aircraft flying above 10,000 ft. UAB is more often used..." | Read more » almost 4 years ago
Ag8n "This conversation may get a little write-up FYI. The shimmering air is probably caused by refraction. The heated air has a different RI then cold..." | Read more » almost 4 years ago
Ag8n "I'm not an expert on the EPA. But I do have extensive experience in the medical device field. In the USP ( United States pharmacopeia), timelines ..." | Read more » almost 4 years ago
Ag8n "Purple air would be the best group to answer this question. If the data exists, it would help the sales of the purple air instruments. A quick lo..." | Read more » almost 4 years ago
Ag8n "73 DE mark " | Read more » almost 4 years ago
Ag8n "Hi! Yes, SDR# is also my favorite software. I also have a V3, but I also have several of the older dongles. The older ones work ok, you just have ..." | Read more » almost 4 years ago
Ag8n "I can only make a guess as to why they start at 0.2 ppm. With most analytical measurements, you want a ten to one signal to noise ratio to be sure..." | Read more » almost 4 years ago
Ag8n "One inexpensive way to do that is with an rtlsdr dongle. You might want to check the rtlsdr subreddit. The dongles cost about $20. Thats assuming..." | Read more » almost 4 years ago
Ag8n "An impressive step forward. I couldn't tell, from the visual, if the instrument used FTIR transmittance or FTIR reflectance. Could you please cla..." | Read more » almost 4 years ago
Ag8n "The TCD is a thermal conductivity detector. It's an attempt at a " universal" detector- that is one that will detect most substances. The problem..." | Read more » almost 4 years ago
Ag8n "Ok, it's a question of the process and how much you know about it. If you know everything that's likely to be produced in a plant ( say a refining..." | Read more » almost 4 years ago
Ag8n "VOC just tells you the amount of volatile organic carbon, not the specific molecule. If the voc is all octane, that's a totally different situatio..." | Read more » almost 4 years ago
Ag8n "We had a gas sampling valve on our gc/ms. This could be used for gas analysis, but was usually used for heart cutting samples from a hplc to the g..." | Read more » almost 4 years ago
Ag8n "Safety first. The problems you describe could be caused by a furnace not working correctly and generating carbon monoxide. Please get a carbon mo..." | Read more » about 4 years ago
Ag8n "Ok. If you are using the public labs spectrometer, it can be calibrated using the mercury lines in a compact florescent lamp (CFL). You could the..." | Read more » about 4 years ago
Ag8n "By the way, the CyAN app gets images from satellites! " | Read more » about 4 years ago
Ag8n "There is an APP from the EPA that allows for testing for cyanobacteria ( yes,this includes the bad algae). The app works on androids and is called..." | Read more » about 4 years ago
Ag8n "It's not as easy to do as it seems. Sunscreen blocks light in the uva and uvb . These are in the range of 360 nm to 200 nm. If you want to use t..." | Read more » about 4 years ago
Ag8n "There are a number of ways to test for this. But first, don't Use any method that brings you in contact with the algae. The exception is, if you a..." | Read more » about 4 years ago
Ag8n "Here in the lake Erie area, we are suffering from algae blooms. You can look up the problem. But especially in the western basin of lake Erie, t..." | Read more » about 4 years ago
Ag8n "Stevie, Sorry, I'm not available.  Thanks, Ag8n On February 13, 2020, at 3:14 PM, notifications@publiclab.org wrote:Hi! You were mentioned ..." | Read more » about 4 years ago
Ag8n "My expertise is chemistry. But in working in a glp/gmp lab environmenment, I was trained in some of it. The major concern with HEPA filters was ..." | Read more » about 4 years ago
Ag8n "There are a number of other GC detectors, many of which are kind of obscure. Take a look at those and see if any fit the VOC/ TOC (total organic c..." | Read more » about 4 years ago