how to measure TDS if system already has glycol

chuckjg

Recently attended a water quality discussion hosted by Hot Rod. My TDS (total dissolved solids) measurement device doesn't seem to work once the system contains glycol. Is there any way to determine TDS once the system has a glycol mixture?

hot_rod

http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_010e/0901b8038010e417.pdf?filepath=heattrans/pdfs/noreg/180-01286.pdf&fromPage=GetDoc

The table on page 6 shows conductivity. Convert that micro sieman to ppm. Maybe confirm with the brand of glycol you have

chuckjg

thanks for the reply, I am using dowfrost. I don't understand how you convert microsiemen to ppm. I read that they are related, but I don't see a conversion factor.

hot_rod

http://www.lenntech.com/calculators/conductivity/tds-engels.htm

chuckjg

Thanks, I guess I had to look a little further. I appreciate the help.