Concentration of Propylene Glycol in cooling water 2

[adavidi]

Hi,
Does anyone used and measured automatically, the concentration of Propylene Glycol in cooling water system?
Right now I only have a portable device that gives the temperature of freezing, but I’d like to have an automatic controller of the concentration.

Thanks in advance
Aharon

 

[bimr]

Most of these cooling systems are closed systems so that there is no regular makeup of water. The systems are filled on a batch basis.

 

[mrushy]

A refractor is what you need, commercially available fromm scientific instrument suppliers, a simple one will give % glycol, mono & prop glycol on same instrument.

mrushy

 

[adavidi]

Mrushy,
Can you recommend on specific supplier/vendor for this instrument?

Aharon

 

[mrushy]

Aharon

Bellinghamandstanley.com

They have a UK and US address, I have only purchased in the UK.

mrushy

 

[bimr]

http://www.misco.com/products/M111.html