Quick way to identify fluid (of 3 possible fluids)
Quick way to identify fluid (of 3 possible fluids)
(OP)
Hi, I am looking for some advice on how to determine what fluid is in a container (possibilities are isopropanol, MEK, or mixed xylene). Any measurements taken don't really need to be exact so long as they are able to differentiate between those three fluids.
The idea I came up with is to differentiate between the three by using viscosity, using a Zahn cup viscometer. I know that generally these are used for higher viscosity fluids like paint, but I have found a few manufacturers that do make ones for very low viscosity applications that might work for my purpose (.4 to 2cp).
Alternatively, I do not see any other property that separated the three fluids but could possibly use two tests in conjunction to determine the fluid (eg test freezing point to rule out xylene and then look at refractive index to determine between MEK and isopropanol).
Does anyone else have any suggestions or experience either with these fluids or Zahn cup viscometers?
The idea I came up with is to differentiate between the three by using viscosity, using a Zahn cup viscometer. I know that generally these are used for higher viscosity fluids like paint, but I have found a few manufacturers that do make ones for very low viscosity applications that might work for my purpose (.4 to 2cp).
Alternatively, I do not see any other property that separated the three fluids but could possibly use two tests in conjunction to determine the fluid (eg test freezing point to rule out xylene and then look at refractive index to determine between MEK and isopropanol).
Does anyone else have any suggestions or experience either with these fluids or Zahn cup viscometers?
RE: Quick way to identify fluid (of 3 possible fluids)
RE: Quick way to identify fluid (of 3 possible fluids)
RE: Quick way to identify fluid (of 3 possible fluids)
RE: Quick way to identify fluid (of 3 possible fluids)
Assuming it's down to MEK or isopropanol, it would be easy to tell them apart by the odour, and fairly easy by the solubility- but a similarly easy way would be to put a few drops on a piece of styrofoam. MEK and xylenes should both dissolve it readily- isopropanol will do nothing, just roll right off.
RE: Quick way to identify fluid (of 3 possible fluids)