Providing immediate verification of urea concentration, this diesel exhaust fluid refractometer kit measures DEF levels across a 15.0 to 40.0% scale with 0.5% graduations. It identifies the 32.5% urea solution required for SCR-equipped Class 7-8 truck engines from manufacturers such as Cummins, PACCAR, and Detroit Diesel. This portable optical instrument includes a dropper and lens wipe cloth to facilitate precise measurements in the shop or the field.

Providing immediate verification of urea concentration, this diesel exhaust fluid refractometer kit measures DEF levels across a 15.0 to 40.0% scale with 0.5% graduations. It identifies the 32.5% urea solution required for SCR-equipped Class 7-8 truck engines from manufacturers such as Cummins, PACCAR, and Detroit Diesel. This portable optical instrument includes a dropper and lens wipe cloth to facilitate precise measurements in the shop or the field.