Digital Differential Counter -10 key The Digital Differential Counter uses modern technology for simple and accurate blood cell counts. A short beep sounds with each touch on the touch pad to confirm the count, and a long beep indicates you have reached 100 cells. 8 buttons are labeled with cell names and cell pictures for Baso, Eosin, Myelo, Juven, Stab, Seg, Lymph, and Mono, plus there are two additional BLANK buttons for additional cells. Push the percent button at any time to automatically calculate percentages, and push the reset button to clear the counts. FeaturesDescription