When a liquid sample is placed on the prism, the light passing through it is bent. The more concentrated the liquid, the more the light will bend.
Doc’s Diesel DEF Diesel Exhaust FluidDEF Diesel Exhaust Fluid
DEF Refractometer Measuring Diesel Exhaust Fluid Concentration of Diesel Engines
OTC Tools 7215 Exhaust Back Pressure Gauge
Doc’s Diesel DEF Guard Diesel Exhaust Fluid Additive
OTC 3674 DIESEL FUEL PRESSURE TESTER MEASURES 0-1,500 BAR 12 Volt DC
OTC 1EAV3 Diesel Compression Tester Guage
