Extech Rf40: Everything You Need To Know – Specifications, Comparisons, Manuals, And Troubleshooting
Extech RF40 Information the information about the Extech RF40 refractometer: Introduction The Extech RF40 is a portable battery coolant/glycol refractometer that measures the freezing point of automotive coolants (propylene glycol and ethylene glycol) from 32°F to -60°F. It also indicates the specific gravity of battery acid and provides a quick reference of battery charge condition. The RF40 is easy to use and requires only 2 or 3 drops of solution for a reading. It features automatic temperature compensation (ATC) for repeatable results, and comes complete with a storage case, calibration screwdriver, plastic pipette, and calibration solution.