ATD-3705 Coolant Refractometer


$59.99 $72.99
Availability: 1 in stock

Coolant Refractometer

  • High-quality refractometer offers a fast, easy way to test the freezing point of coolant/anti-freeze.

  • Works with Ethylene or Propylene Glycol anti-freeze

  • Not for use with OAT coolants

  • Also measures battery acid gravity to determine battery life

  • Automatic temperature compensation

  • Large, easy-to-read graphics and high-contrast lens

  • Adjustable viewfinder; rugged, steel body construction

  • Includes storage case, fluid dropper, cleaning cloth and mini screwdriver



Ethylene Glycol: -84°F to 32°F
Propylene Glycol: -60°F to 32°F
Battery: 1.100-1.400 Specific Gravity

Minimum Division

Ethylene Glycol: 5°F
Propylene Glycol: 5°F
Battery: 0.01 Specific Gravity


Ethylene Glycol: ±5°F
Propylene Glycol: ±5°F
Battery: ±0.01 Specific Gravity