Some common questions we receive about the RF40 refractometer from FLIR Extech are collected below.
How to read the reading of RF40, Battery Coolant Refractometer?
The RF40 User’s Guide explains how to operate the refractometer.
I would like to check on the CNC coolant concentration, what should be the reading after conversion to Brix%
This refractometer does not give a Brix reading. It is meant to give dilution percentages of ethylene glycol and propylene glycol directly.
Applicable part number