Clinical laboratory analyzers for measuring, testing and analyzing blood and other bodily fluids; Electronic and optical communications instruments and components, namely, communication link testers for testing communication links; Electronic and optical communications instruments and components, namely, digital transmitters; Electronic and optical communications instruments and components, namely, optical data links; Electronic and optical communications instruments and components, namely, optical receivers; Measurement standard devices for nanometrology, namely, measuring tools having a pattern in the micrometer or nanometer ranges; Pharmaceutical and scientific research equipment for use in mass spectrometers; Portable detection and identification instruments using light sources and light detectors for detecting and identifying chemical and biological substances not for medical purposes; Scientific apparatus and instruments for measuring relative DNA/RNA and protein and parts and fittings therefor; Scientific apparatus, namely, cellular mixed ester membranes for use in the science and research industry; Scientific apparatus, namely, spectrometers and parts and fittings therefor; Scientific apparatus, namely, spectrophotometer for measuring relative DNA/RNA and protein; Scientific apparatus, namely, sensing and signaling devices for measurement and quality control of materials processing by laser; Scientific instrument that measures chemiluminescence for research purposes; Scientific instruments, namely, electronic analyzers for measuring, testing and detecting contaminants and environmental pollutants; Scientific instruments, namely, electronic analyzers for testing consumer products for the presence of contaminants; Temperature controller for controlling temperature of medical instruments and containers for medical fluids