A quick and accurate way to measure the glycol concentration in a HVAC or mechanical system is through a hand-held refractometer. Here are a few do’s and don’ts for the proper use of this instrument.
- Be sure the instrument is clean and dry before use
- Use enough fluid to cover the entire measuring prism
- Point the instrument at a light source when taking the reading
- Read from the appropriate side of the scale (ethylene or propylene glycol
- Clean the instrument after each use
- Do not touch the measurement prism or bottom of the sample cover
- Do not get fluid on the eyepiece of the instrument
- Do not open the sample cover when taking a reading
- Do not test a sample that is too hot or too cold (between 70° and 85°F is best)
- Do not drop the instrument or subject it to hard knocks
As the end of the summer approaches it is time to finish up servicing the many school districts’ mechanical and HVAC systems before the students, teachers, and administrators return this fall. This maintenance can be tiresome and expensive. Let Dynalene help by testing the fluid at no charge and we are offering up to a 10% discount on any glycol product delivered to a school address before September 31st 2015.