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Battery Coolant Refractometer


Price starts at $89.99

Product Code : RF40

Manufacturer : Extech

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Download or View this product's / series details and specifications Specifications (PDF)


  • Automotive coolant refractometer measures the freezing point of coolants plus battery charge condition
  • Provide accurate and repeatable measurements of % Ethylene Glycol and Propylene Glycol and °F on easy to read scale
  • Automatic Temperature Compensation
  • Requires only 2 or 3 drops of solution
  • The prism and lens with a simple focus adjustment provides repeatable results


This precision optical instrument should be handled gently; avoid touching the optical surface. Careful use of this instrument will provide years of reliable service.

General Specifications
Range -60 to 32°F Propylene and ethylene glycol freeze point, 1.15 to 1.30 specific gravity of battery acid
Resolution 10°F glycol freeze point, 0.01 specific gravity of battery acid
Dimensions 6.5x1.5x1.5" (165x38x38mm)
Weight 7.O oz
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