LW Scientific Differential Counters User Manual
Differential Counters
Differential Counters
Instruction Manual
Models pictured:
5 and 8 Key Differential Counters
Digital Differential Counter
see back page for model specifications.
A
BA
C
E
B
C
D
E
A Individual Count Displays
B Total Count Display
C Reset Dials / Key
D % Key (Digital Counter Only)
E Counting Keys
Inspection for Manual Counters
Ensure unit is clean and there are no scratches on the surface of your counter.
1
Push down on each key to ensure unit registers correct number in proper working order.
2
Turn knob, making sure unit clears and the bell rings in proper working order. To reset the counter, rotate the TOTAL
3
field to zero three complete times.
If your counter is not in ideal working condition, please refer to the warranty card for service information.
4
P. 770.270.1394 F. 770.270.2389 865 Marathon Parkway Lawrenceville GA 30046
Inspection for Digital Counter
Inspect packaging for any apparent physical damage.
1
Open carton, remove digital counter, and place on a dry, level surface, away from magnets.
2
Plug into the appropriate voltage outlet (110V or 220V)
3
Turn on power button. The display should show "0." If it does not, press the reset key to clear all data to zero.
4
The counter is ready to start count operation.
5
If your counter is not in ideal working condition, please follow the warranty procedure.
6
Manual Counter Operation Instructions
Each of the keys on the counter represent a type of leukocyte, according to the Schilling classification, and are
1
labeled accordingly.
As you observe and identify each type of leukocyte in your sample, push down the key corresponding to the
2
appropriate cell type. IMPORTANT: To ensure that the unit registers the correct count of cells, make sure that you
press firmly on each key and only one key at a time.
Above each key, there is a corresponding window (Individual Count Display) that records the number of times the
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key has been pressed correctly.
The Total Count Display keeps track of the overall number of times the different keys have been pressed.
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5
When the addition of all the cells counted reaches 100, a bell will sound. At this point, each Individual Count Display
represents the percentage of the cells in the sample.
Once the count has been completed, turn either knob at the end of the counter until all windows are back to zero.
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You are now ready to proceed with the next count.
P. 770.270.1394 F. 770.270.2389 865 Marathon Parkway Lawrenceville GA 30046
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