LW Scientific
Manual Differential Counters
22-500-101
This is the best counter I could find for the price. It has 8 counters, is easy and soft in operation and much lower priced than competitors.
Counting
Cells
For any counting experiment, just tap for each count. The last counter shows total of all counts from remaining counters.
Be consistent and not too fast. You may miss counts.
Easy to use and soft operation counter. Highly recommended.
Durable and acid-resistant; High-impact plastic body; Right and left reset knobs; Non-slip bottom; Bell alarm for 100th counted cell
None
Good price
Still a manual counter
Ergonomic and inexpensive counter with good quality material.