Laboratory Thermometers
Made of glass or metal, thermometers are a tool to measure temperature accurately. Glass thermometers have been strengthened through thermal tempering and the traditional one is a long stem with a silver bulb filled with mercury. Alcohol-filled ones are not as precise as the alcohol evaporates but they can read as low as -200 degrees centigrade. Apart from liquid-glass thermometers, electronic devices are increasingly used. Thermistors measure change in electrical resistance and convert it to changes in temperature. A bimetallic strip consists of two different metals bonded together which expand at different rates so the strip is forced to bend. This bending movement deflects a pointer over a calibration scale. This type is low cost but is not as accurate as a glass stem. Infrared thermometers are non-contact devices which convert infrared energy to an electrical signal and often have a laser targeting system. K-type are used for extreme temperatures and have interchangeable probes for air, liquid or surface. Other types include liquid crystal, quartz and gas resistance. Thermometers are basic pieces of laboratory equipment, whether for research, industry or education. They are used for monitoring experiments, maintaining a sterile work environment and calibrating other laboratory instruments and testing materials.
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YSI Nitrate Standard 10ppm (5L) HYD4707-DO - Hyd Calibration stan (1 Supplier)
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YSI Nitrate Standard 1ppm (2.5L) HYD4706-DH - Hyd Calibration stan (1 Supplier)
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YSI Nitrate Standard 1ppm (5L) HYD4706-DO - Hyd Calibration stan (1 Supplier)
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YSI Nitrate standard 1ppm (as N) 500ml HYD4706-CO - Hyd Calibration stan (1 Supplier)
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YSI ODO200 606329 - WQS (1 Supplier)
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YSI PH 10A PH10 - WQS (1 Supplier)
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YSI Phosphate Standard 100ppm (500mls) HYD3719-CO - Hyd Calibration stan (1 Supplier)
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YSI Phosphate Standard 10ppm (500mls) HYD3751-CO - Hyd Calibration stan (1 Supplier)
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YSI Phosphate Standard 1ppm (500mls) HYD2515-CO - Hyd Calibration stan (1 Supplier)
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YSI Pro1020 6051020 - Pro Series (1 Supplier)
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YSI Pro10 6050010 - Pro Series (1 Supplier)
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YSI Purified Water 10L HYD0757-EA - Hyd Calibration stan (1 Supplier)
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YSI Purified Water 1L HYD0757-DA - Hyd Calibration stan (1 Supplier)
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YSI Purified Water 5L HYD0757-DO - Hyd Calibration stan (1 Supplier)
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YSI Quinine Sulphate Standard 300ug/L 500ml HYD4025-CO - Hyd Calibration stan (1 Supplier)
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YSI Redox Standard HYD4690-CO - Hyd Calibration stan (1 Supplier)
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YSI Rhodamine WT dilution water A.R. 995ml HYD2964-DA - Hyd Calibration stan (1 Supplier)
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YSI Zero Oxygen Standard HYD3834-DA - Hyd Calibration stan (1 Supplier)
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