REFRACTOMETER

Jaltest Refractometer (SKU 50003011) — $32 The Jaltest Refractometer (part 50003011, $32) is an optical refractometer from the Jaltest Tools product line, used for measuring fluid concentrations in commercial vehicle and equipment service. Refractometers are standard workshop tools for checking antifreeze protection levels, battery acid concentration, and DEF/AdBlue concentration — quick, non-destructive checks that should happen as part of any thorough vehicle inspection or SCR system diagnostic process. What a Refractometer Does A refractometer measures the refractive index of a liquid, which correlates directly to concentration. In a truck or equipment shop, the primary uses are: Coolant freeze point: Check ethylene glycol or propylene glycol antifreeze concentration to confirm adequate freeze protection — critical for trucks and equipment operating in cold climates or winter conditions Battery electrolyte: Check lead-acid battery acid concentration as part of electrical sys