Extech RF40 Coolant/Glycol & Battery Acid Refractometer with ATC (°F)

EXTECHSKU: RF40
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Price:
Translation missing: en.product.general.price 402.50 SR (Including VAT)
350.00 SR (Excluding VAT)
Stock:
Sold out

Description


The Extech RF40 is a portable analog refractometer designed to measure the freeze point of propylene and ethylene glycol-based coolants in degrees Fahrenheit, as well as the specific gravity of battery acid. It features Automatic Temperature Compensation (ATC) for accurate readings between 10°C and 30°C (50°F to 86°F). Requiring only 2–3 drops of sample, the RF40 provides clear, dual-scale optical readings and is ideal for automotive, industrial maintenance, and battery service applications. The unit comes complete with a protective carrying case, calibration screwdriver, and calibration solution.


  • Measures propylene glycol freeze point: –60°F to +32°F
  • Measures ethylene glycol freeze point: –60°F to +25°F
  • Measures battery acid specific gravity: 1.15 to 1.30
  • Automatic Temperature Compensation (ATC) from 10°C to 30°C (50°F to 86°F)
  • Requires only 2–3 drops of sample
  • Easy-to-read dual-scale analog display with focus-adjustable eyepiece
  • Compact, rugged design for field or shop use
  • No batteries required—fully optical operation
  • Includes protective carrying case, calibration screwdriver, and calibration solution




Resolution (Propylene Glycol) 2°F
Accuracy (Propylene Glycol) ±2%
Measurement Range (Ethylene Glycol) –60°F to +25°F freeze point
Resolution (Ethylene Glycol) 2°F
Accuracy (Ethylene Glycol) ±2%
Measurement Range (Battery Acid) 1.15 to 1.30 specific gravity
Resolution (Battery Acid) 0.01
Temperature Compensation Automatic (10°C to 30°C / 50°F to 86°F)
Sample Volume 2–3 drops
Dimensions 6.2 x 1.6 x 1.2" (160 x 40 x 30 mm)
Weight 6.3 oz (180 g)

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