Measuring instruments for liquid flow monitoring, calibration, analysis, laboratory research, operation, development and production; measuring devices for liquid flow monitoring, calibration, analysis, laboratory research, operation, development and production; for precise measurement , measurement, testing, calibration, and flow control instruments and equipment; microscopes; Containers for scientific or laboratory use; containers for scientific or laboratory use, namely, bottles, dishes, flasks, tubes, vials, beakers and cylinders; Funnels for scientific or laboratory use; Scientific and electrical apparatus and weighing, measuring, monitoring and process control instruments all in the nature of laboratory equipment, namely, digital pH meters and temperature indicators, electrochemical oxygen monitors and sensors for laboratory use, sensors for sensing PH, dissolved oxygen content in laboratory samples, and conductivity, spectrophotometers for use in identifying and measuring colors, fluorimeters, dissolved oxygen meters for laboratory use, portable and bench dissolved oxygen meters for laboratory use, conductivity meters, portable and bench conductivity meters, conductivity cells in the nature of electrical conductivity sensors, photometers for laboratory use, flame photometers, pH meters, portable and bench pH meters, pH meter components in the nature of pH electrodes, combined pH and conductivity meters, colorimeters, flowmeters which measure gas, air, and water for industrial or laboratory use, digital and thermocouple thermometers, pipettes and tips therefor, electric motor driven stirrers and mixers primarily for laboratory use, ultrasonic cleaners in the nature of sterilizers for laboratory use, water baths, thermal immersion circulators, calibration baths, fluidized bath heater, cell culture stirrers, hotplates, stirrers, stirring hotplates, refrigerators, freezers, ovens, incubators, heating blocks, furnaces, dry block heaters, nucleic acid sequencing instruments, DNA analysis instruments, vortex mixers, mixers incubators, flask shakers, rollers, roller mixers, rockers, platform rockers and rockers providing a gyratory motion, orbital shaker incubators, temperature controlled shaking water baths, orbital shakers and reciprocating shakers and platforms therefor, equipment for measuring the melting points of products and heating blocks therefor, handheld tally counters, colony counters and digital counters for measuring bacteria and mold colonies, electrical heating equipment and apparatus for laboratory and scientific use in the nature of heating mantles, heating tapes, armoured heater, water, air, and histological baths, apparatus for soxhlet and kjeldahl tests, test tube heaters, heating panels and pads, pyrometers and energy regulators for control of such apparatus and equipment, auxiliary equipment for the automatic operation of aforementioned laboratory goods, namely, computer software and hardware for the control, measurement, monitoring, and evaluation of laboratory measuring instruments