Comments

Author Comment Last activity Moderation
Ag8n " The set up seems very similar to one we used for flow injection analysis (F IA). Interesting article. It looks like you have one artic!e left. A..." | Read more » almost 6 years ago
Ag8n " With your vbat pin, did you connect it directly to the +3.3v or go thru a pull up resister? What value resister did you use? Very interesting pr..." | Read more » almost 6 years ago
Ag8n " Very interesting. I don't know if a chemist or biochemist who doesn't get tired of pipeting. And the robotic ones are expensive. Looking forwar..." | Read more » almost 6 years ago
Ag8n " Just realize, these methods are far from being implemented. The mercury one is " proof of concept", which means it still needs troubleshot, valid..." | Read more » about 6 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 » about 6 years ago
Ag8n " I've never seen FTIR used for mercury detrmination. Usually, that is a variation of AA. The instrument set up you show is for transmission. Pro..." | Read more » about 6 years ago
Ag8n " I like the idea. But why are you selecting ftir? " | Read more » about 6 years ago
Ag8n " Yes, ion exchange is a good idea. Usually, it's cation exchange, anion exchange, and actived charcoal, followed by the particle filter. A conduc..." | Read more » about 6 years ago
Ag8n " One item tried in industry was to take good quality water and run them through filters small enough to stop microbes ( the last I heard, about 0.2..." | Read more » about 6 years ago
Ag8n " Don't know about the software, but the commercial instruments are much more involved than a spectrometer. They have a specific angle the light is..." | Read more » about 6 years ago
Ag8n " Suggestions- Identify polymers used in products produced. Hopefully, this will be supplied by Aluf. Identify possible hazardous ingredients of pr..." | Read more » about 6 years ago
Ag8n " The "repro" mentioned in the report is short for reprocessing. This plastic ha s seen a lot of heat and is much more likely to break down. Hence ..." | Read more » about 6 years ago
Ag8n "One other item got some attention. The company put some antimicrobials in some of their products. These can often be irritating to humans, especi..." | Read more » about 6 years ago
Ag8n " The sheets of polymer can be made out of many materials, some of which are PVC, LDPE, and HDPE. On top of this, there are a variety of materials ..." | Read more » about 6 years ago
Ag8n " This will take a while- so bear with m e. Many black plastic bags are made of polyvinyl chloride ( PVC). When this degrades, it generates hydroc..." | Read more » about 6 years ago
Ag8n " Some of the the inexpensive conductivity meters used an a.c. Frequency generator feeding a wheatstone bridge. One leg of the wheatstone was the w..." | Read more » about 6 years ago
Ag8n "Please look at the data sheet for the purple air sensors. Specifically, the r2 data for the pm1.0, pm2.5, and pm 10. At least in the medical fiel..." | Read more » about 6 years ago
Ag8n "A word of warning. A number of tests have been developed along this line. This includes the lowry, bradford, LEAP (latex Elisa for allergenic prot..." | Read more » about 6 years ago
Ag8n "Another good way to quantitate sugars is with a refractometer. They are pretty cheap and often used in wineries. " | Read more » about 6 years ago
Ag8n "The purple air monitors have a low r2 value for the pm10 testing. This may lead to the skewing that you are talking about. I corresponded with th..." | Read more » about 6 years ago
Ag8n "In wwii, they had a kytoon ( a mixture kite and balloon for lifting emergency antennas)for downed airman. They show up now and then in the sur plu..." | Read more » about 6 years ago
Ag8n "Sir, This may be a dumb question, and if so, I apologize. Most raw data has anomalous data included. How would a newcomer detect the anomalous da..." | Read more » about 6 years ago
Ag8n "There are a number of parts to six sigma. The different parts go from statistical analysis to design of experiment (DOE). While there are some bus..." | Read more » about 6 years ago
Ag8n "One industry program for statistics ( or sadistics, as a nicname) is six sigma. This is a relatively expensive program that includes ( not kidding..." | Read more » about 6 years ago