Coolant Refractometer

The Source of Truth
Eliminates the guesswork of visual checks with an immediate optical reading of fluid strength, helping prevent blind dosing and unnecessary concentrate use.

Universal Compatibility
Engineered to read the refractive index of major coolant types, including full synthetics, semi-synthetics, and high-oil emulsions.

Optimized 0–18% Scale
Unlike standard 0–32% food-grade units that can be difficult to read at lower levels, this refractometer focuses on the 0–18% range for better resolution in the critical 5–10% operating zone.

Battery-Free Reliability
Uses ambient light and precision prism optics, keeping it ready for use without batteries, charging, or electronic failure points.

• Scale Range: 0% – 18% Brix
• Measurement Type: Optical Refractive Index
• Compatibility: Synthetic, Semi-Synthetic, Soluble Oils
• Focus: Adjustable Eyepiece
• Construction: Heavy-Duty Aluminum Body with Rubber Grip
• Included: Pipette, Calibration Screwdriver, Carrying Case

Why You Need This
Coolant concentration changes daily due to evaporation (which thickens the mix) and drag-out (which thins it). The only way to maintain a stable 7% mix is to measure it daily.

The "Refractometer Factor"
This device reads in "Brix." To get the absolute concentration, simply multiply the reading by your coolant's refractive factor (e.g., Reading 5.0 x Factor 1.4 = 7.0% Concentration). It is the standard method for all ISO-certified machining facilities.