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Author Comment Last activity Moderation
Ag8n "If you are looking for 1 cm x 1 cm cuvettes , they should be transparent on all four sides. This way, they can be used for both turbidimeters and ..." | Read more » over 3 years ago
Ag8n "Let me do a little more research and get back to you. " | Read more » over 3 years ago
Ag8n "Copper and copper (I) oxide can be determined visually, based on color. Copper (II) oxide and copper sulfide, both of which are black, cannot be e..." | Read more » over 3 years ago
Ag8n "Hi Gretchen. Out of curiousity, what progress has been made on this question? Thanks. " | Read more » over 3 years ago
Ag8n "You hit the nail on the head with auto correct. Good luck with your project. " | Read more » over 3 years ago
Ag8n "There are several other previous questions that discuss this. But crazy is is correct, all tds meters are conductivity meters. One side note- ther..." | Read more » over 3 years ago
Ag8n "Sorry, I didn't finish the instrument explanation. After determining the size of a particle,most instruments find out how many particles are great..." | Read more » over 3 years ago
Ag8n "Yeah, that is part of the question. The medical devices had direct access to the blood stream and lungs. So particle number and size was critical..." | Read more » over 3 years ago
Ag8n "In this area (Ohio), at least, trace levels of hypochlorite ( bleach) work their way into the storm sewer. If you have a piece of red pH paper, b..." | Read more » over 3 years ago
Ag8n "You want to check the expiration date of the strips, first. If they are expired, throw them out. And beware. If you are using something like red ..." | Read more » over 3 years ago
Ag8n "Wondered about that. The main plant Had a storm sewer. One of the small satellite plants had something labelled a storm sewer. But, when the sam..." | Read more » over 3 years ago
Ag8n "It gives a range of magnifications. As for sample prep- "samples were mounted in aroclor 5442 or the equivalent Carville refractive index liquid 1..." | Read more » over 3 years ago
Ag8n "See below These are photos taken from" the particle atlas", second edition, volume II, by mccrone. " | Read more » over 3 years ago
Ag8n "I checked the images. There are pictures of quartz and several for cristobalite. Didn't see one for tridymite. " | Read more » over 3 years ago
Ag8n "I'm no expert on microscopy. Did mess with it a little. The difference I notice is a lot of the work is done with crossed polars- messing with th..." | Read more » over 3 years ago
Ag8n "I do have a copy of edition two, which is four volumes. Volume 1 goes over microscopes, volume 2 gives pictures of the different materials, and vo..." | Read more » over 3 years ago
Ag8n "Got it! It's at: Https://www.grc.nasa.gov/www//k-12/airplane/kitesag.html It also has a link to a program called kitemodeller, since the math for..." | Read more » over 3 years ago
Ag8n "May not work with those sensors, but.. Many of the weather stations can be wirelessly received with an rtlsdr ( they cost about $20). The program a..." | Read more » over 3 years ago
Ag8n "I checked Amazon. There are several tds meters that also do conductivity for a price of under $20. Since a scientific model lists for about $1000,..." | Read more » over 3 years ago
Ag8n "Sorry. Truncated the internet address: Https://www.hydroponics.net/learn/debate_over_ec_and_tds.php " | Read more » over 3 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 3 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 3 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 3 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 3 years ago