Instruments, systems and devices for laboratory, biotechnology, bioresearch, and clinical diagnosis research and analysis, namely, hematology and blood analyzers; automated microbiology analyzers; automated hematology chemistry analyzers; DNA analyzers; particle and cell size analyzers; [ gas absorption analyzers; ] UV/visible spectrophotometers; [ scintillation counters and analyzers; ] pH meters; liquid chromatography cell sorters; [ and parts for all of the above, namely, rotors; ] canister assemblies; tube racks; test tubes; pipette tips [ ; and wetting trays ]