Some common questions we receive about the RF40 refractometer from FLIR Extech are collected below.
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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
RF40-ND