9 laboratory equipment and apparatus, namely, pipettes, pipette tips, and pipette racks; plates for use in chemical analysis, biological analysis, or patterning for scientific, laboratory or medical research use; laboratory plates; reagent vessels in the nature of single-well and multi-well reservoir vials; laboratory equipment, namely, thermal cyclers and parts and fittings therefor; laboratory equipment and apparatus, namely, thermocyclers for polymerase chain reaction (PCR); laboratory equipment and apparatus for DNA amplification, namely, thermocyclers; single-use consumable sample plates for polymerase chain reaction (PCR), namely, microtitre plates; multi-zone heating elements, namely, polypropylene coated electrically conductive sheets on to which are attached plastic reaction vessels for use in polymerase chain reaction (PCR) and DNA amplification