Liquid handling equipment for scientific and clinical application, namely, pipette controllers; accessories for pipette controllers, namely replacement tissue culture nosepieces and pipette controller filters; laboratory pipettes, namely, glass, plastic, and plastic coated pipettes, injection pipettes, sequencing pipettes, calibrated micropipettes and polymer chain reaction (PCR) pipettes; laboratory equipment, namely, microdispensers, manifolds for microdispensers, liquid injectors; laboratory equipment, namely, accessories for liquid injectors, namely, universal adapters and support bases; liquid sample collection tubes for laboratory purposes; laboratory equipment, namely, glass and plastic hematocrit tubes and capillary tubes