A handheld optical 4-in-1 refractometer for automotive fleets that provides fast, on site checks of key fluids and battery health. What it measures - Urea concentration with automatic temperature compensation - Freezing point of antifreeze with a 5 C reference - Freezing point of windshield washer fluid with a 5 C reference - Battery electrolyte specific gravity with 0.01 SG resolution - Vehicle urea concentration detected at 0.2% Key benefits - Fast, accurate readings on the shop floor or in the field - Reduces guesswork and prevents maintenance mistakes - Compact, durable handheld design for tight spaces and mobile work - Consolidates multiple tests into one tool, lowering equipment and training needs Key attributes - Function: measures urea, antifreeze FP, washer fluid FP, battery SG, and vehicle urea level - Compatibility: works with common automotive fluids and fluids used in SCR systems - Size: pocket sized handheld instrument for easy transport - Material: rugged ABS housing designed for daily use - Performance: ATC provides reliable results across temperature variations Use scenarios - Fleet winter maintenance: quickly verify antifreeze FP and washer fluid FP before long trips - SCR system service: confirm urea solution concentration and detect vehicle urea level around 0.2% - Battery health checks: assess electrolyte SG in service bays or on the road to monitor battery condition