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Get $3.60 cashback on Extech RF40 Coolant/battery Acid Refractometer
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Extech RF40 Coolant/battery Acid Refractometer

Users say:
This product is easy to use and read, making it a great value for the price. It is suitable for testing battery acid, coolant, and electrolyte, and comes with a dropper and distilled water for temperature compensation. It is also great for monitoring deep-cycle lead-acid batteries in an off-grid system.
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Portable Battery Coolant Refractometer, Coolant/Battery Acid, Range Ethylene Glycol Freeze Point: -60 Degrees F (59 Percent) to 25 Degrees F (16 Percent), Propylene Glycol Freeze Point: -60 Degrees F (63 Percent) to 32 Degrees F (12 Percent), Specific Gravity of Battery Acid: 1.15 to 1.30, Automatic Temperature Compensation Yes, Accurac…
Portable Battery Coolant Refractometer, Coolant/Battery Acid, Range Ethylene Glycol Freeze Point: -60 Degrees F (59 Percent) to 25 Degrees F (16 Percent), Propylene Glycol Freeze Point: -60 Degrees F (63 Percent) to 32 Degrees F (12 Percent), Specific Gravity of Battery Acid: 1.15 to 1.30, Automatic Temperature Compensation Yes, Accuracy +/-2 Percent, Resolution Glycol: 2 Degrees F, Specific Gravity: 0.01
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Review summary

AI-generated content
This product is easy to use and read, making it a great value for the price. It is suitable for testing battery acid, coolant, and electrolyte, and comes with a dropper and distilled water for temperature compensation. It is also great for monitoring deep-cycle lead-acid batteries in an off-grid system.

Pros

  • Easy to use
  • No batteries required
  • Comes with dropper and distilled water

Cons

  • Price may be high
Read original reviews

Description

Portable Battery Coolant Refractometer, Coolant/Battery Acid, Range Ethylene Glycol Freeze Point: -60 Degrees F (59 Percent) to 25 Degrees F (16 Percent), Propylene Glycol Freeze Point: -60 Degrees F (63 Percent) to 32 Degrees F (12 Percent), Specific Gravity of Battery Acid: 1.15 to 1.30, Automatic Temperature Compensation Yes, Accuracy +/-2 Percent, Resolution Glycol: 2 Degrees F, Specific Gravity: 0.01

Specifications

Length: 6 1/2 In
TypeCoolant/battery Acid Refractometer
BrandExtech
Resolution: Glycol: 2 Degrees F, Specific Gravity: 0.01
Promotion Restriction: Not Eligible For Promotion
Model NumberRf40