A pipette is actually a laboratory tool for exactly measuring and transferring little portions of liquid. This is a cylindrical glass or plastic tube which has a slim conclude for liquid transfer and also a bulb or other system for drawing the liquid up. Regular upkeep, which include cleaning and p

Breakaway head The breakaway head (also referred to as breakoff or shear fastener)[70] can be a substantial-security fastener whose head breaks off through installation, during or immediately following the driving process, to leave just a sleek area. It commonly contains a countersunk flat-head bolt