Extech RF41 Battery Coolant Refractometer
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Measures -50 to 0C Propylene/Ethylene Glycol freeze point and 1.11 to 1.30 Specific Gravity of Battery Acid Automatic Temperature Compensation (ATC) Requires only 2 or 3 drops of solution Prism and lens with a simple focus adjustment
Test-meter.co.ukPortable Extech RF41 Refractometer with ATC. Measures coolant/glycol freeze points (-50 to 0°C), battery acid specific gravity (1.15-1.30). Precise temperature-compensated readings with 2-3 drop sample requirement.
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