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Dual scale
even when the foam is completely saturated
PVC fitting
Response time: To 90% in less than 20 seconds
Hand Counter Booster Pump Dual scaleEasily fits in your hand to be thumb operated. The register advances by one digit, up to 9,999, each time the button is pressed. A turn of the side knob resets the register back to zero. Its a great tool for counting algae cells, zooplankton, fry, people, etc.
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