Comments

Author Comment Last activity Moderation
Ag8n " You can buy the instruments with a microprocessor attached. All you have to do is take a syringe, put the liquid in the glass tube, and it will r..." | Read more » over 2 years ago
Ag8n " The reason multimeters aren't used for measuring the resistance of a solution is polarization. It's a fancy word, but by passing direct current t..." | Read more » over 2 years ago
Ag8n " The best way would probably be reverse osmosis. There is a filter that goes along with this set up, but it rarely needs changed. You could go wi..." | Read more » over 2 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 » over 2 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 » almost 3 years ago
Ag8n "Thank you for the answer! " | Read more » almost 3 years ago
Ag8n "Go to: https://github.com/jboone/tpms It gives a working system with links to a hak5 video etc. It doesn't count cars, but... " | Read more » almost 3 years ago
Ag8n "Ok. Let's go through it step by step. First, after a little digging, it looks like there are two frequencies used 315 mh z and 433 mhz. So it woul..." | Read more » almost 3 years ago
Ag8n "You might look into TPMS ( short for tire pressue monitoring system) by j. Boone. Its freeware that runs on linux. The hardware is a rtlsdr ( it ..." | Read more » almost 3 years ago
Ag8n "We always contacted the state EPA. " | Read more » almost 3 years ago
Ag8n "You might be surprised at what goes into storm sewers. The plant I worked at had a "branch" of about 40 people. Anyway, because of its small size..." | Read more » almost 3 years ago
Ag8n "I think the concern should be with detecting radium, since all isotopes are radioactive. The best way to detect radium is with energy dispersive X..." | Read more » about 3 years ago
Ag8n "I worked with medical devices, which is different from the microplastics you are after. For example, if we had plastics in a liquid, I would take ..." | Read more » about 3 years ago
Ag8n "I can help with analyzing microscopic plastic particles, but not microplastics. Let's start with most expensive and go to least expensive. For R&a..." | Read more » about 3 years ago
Ag8n "Well, exactly what approach are you thinking of? Let's see if the already tried can be eliminated and maybe make it easier to make progress. " | Read more » about 3 years ago
Ag8n "We always went with the longest path length. The visual test was done with 50 cm color comparison tubes. Very long for visual. Maybe you could d..." | Read more » about 3 years ago
Ag8n "Do you know what APHA values you will be observing? I was typically observing values under 25. And yes, a florescent light was very helpful again..." | Read more » about 3 years ago
Ag8n "If you used the right lamp, you would be ok. You need to use a broadband source, as stoft noted. " | Read more » about 3 years ago
Ag8n "Try to avoid using blue water solutions, at least without doing some testing. The compact florescent lamps (CFL) loose intensity at the blue and o..." | Read more » about 3 years ago
Ag8n "Yes, it can. You need to go to the spectrometer page for more information. It will show how to set up cuvette s to hold water and what to use as ..." | Read more » about 3 years ago
Ag8n "There is a book " standard methods for the examination of water and waste water" that goes over most testing. The best suggestion is to talk to th..." | Read more » about 3 years ago
Ag8n "Google " epa method 180.1 determination of turbidity... ". It's dated August of 1993. Should get you started. " | Read more » about 3 years ago
Ag8n "Google epa method 180.1 turbidity by nephlometry. It's dated augu " | Read more » about 3 years ago
Ag8n "I've seen a bunch of different things used, but cuvette s are most common. " | Read more » over 3 years ago