Laboratory Equipment for Measuring and Controlling Pressure and Rate of Flow of Liquids and Gases in Conduits-Namely, Flow Meters, Viscosity Meters, Finger and Motor Actuated Liquid Dispensers, Pipette Fillers; Liquid and Gas Pumps-Namely, Varistaltic Pumps, Ministaltic Pumps, Mechanical Pumps, Macrostaltic Pumps; Diluting and Pipetting Devices; Fittings for Making Connections in Glass Tubing, and Parts for All of the Above