Optical Refractometer for Coolant, Battery Acid and Washer Fluid

This optical tester allows quick, accurate checks of coolant freezing point, battery acid concentration, and windscreen washer fluid strength.

Simply place a drop of fluid on the prism and read the result through the eyepiece against the calibrated scale.

Why Choose This Product?

• Tests coolant, battery acid and washer fluid
• Quick, accurate optical reading
• No batteries required
• Durable, reusable design

Ideal For

• Workshop fluid checks
• Seasonal coolant testing
• Battery maintenance