The DR.CARE Differential Blood Cell Counter (5-Key) is a manual laboratory instrument used in hematology to classify and count different types of white blood cells (WBCs). It is specifically designed to facilitate manual differential counts under a microscope, commonly identifying Basophils, Eosinophils, Monocytes, Lymphocytes, and Segmented Neutrophils (Polycytes).  Key Features Counting Structure:Features 5 manual keys and 6 windows; the sixth window serves as a totalizer that automatically sums the counts from the other five keys. Audible Alert:Equipped with an audible bell (often described as a “Don” sound) that rings at every 100-count increment of the totalizer to notify the technician. Capacity:Each individual window and the totalizer can record figures ranging from 0 to 999. Reset Mechanism:Includes dual reset knobs at both ends of the counter to quickly clear all figures back to zero. Durability:Built with a durable ABS outer shell that is impact-resistant and easy to clean with standard laboratory disinfectants.  Specifications & Availability Dimensions:Approximately 250 x 80 x 50 mm. Weight:Roughly 610–690 grams. Operation:Entirely manual; it does not require a power supply or batteries to function.   EAN: 4800000167705Product ID: 16770 SKU: PMS93426 Categories: Laboratory, Laboratory Apparatus