Special pestles for Watson brand microcentrifuge-tubes
Made of Polypropylene.(Autoclavable)
Pestles can be attached to bit-type screw drivers on the market.
CAP LOCK is designed to fit Watson brand microcentrifuge-tubes
Made of elastomer.(Autoclavable)
Squeeze the knob of CAP LOCK to open
Pinch the closed lid with CAP LOCK
Now, they fit perfectly
The knob of CAP LOCK is useful when being taken up from thermostat bath