Manual Thermometers
Mercury, non-mercury (liquid in glass), or bimetallic thermometers with analog displays, for general and application-specific use, with various temperature-range capacities and accuracies; may be traceable or certified to international standards.
In 1714, the mercury-in-glass thermometer was invented in Europe by physicist Daniel Gabriel Fahrenheit. Typically, the mercury is contained in a reservoir that opens to narrow glass tube. The distance that the mercury flows into the tube is dependent on the temperature to which the thermometer is subjected. The space above the mercury may be filled with air or an inert gas, or it may be a partial vacuum.
Thermometers are calibrated by exposing them to a known temperature and then marking the height of the mercury at that temperature. For example, one might calibrate to the freezing temperature of water (0°C or 32°F) by placing the thermometer in a mixture of ice and water. Then the thermometer could be submerged in boiling water to determine the point where the water changes from a liquid to a vapor (100°C or 212°F).
Mercury thermometers are still considered to be some of the most accurate temperature indicators. They can be used for a wide range of temperatures, from -37°C to 356°C (-35°F to 673°F). Modifications such as adding an inert gas above the mercury or replacing the glass with fused quartz can extend the upper temperature limit to as high as 800°C (1,470°F).
Mercury cannot be used below -38.83°C (-37.89°F), the temperature at which it becomes a solid. Moreover, nitrogen in the thermometer can flow down into the column and become trapped if the mercury solidifies, which makes the thermometer unusable. Use a thermometer that contains a mercury-thallium alloy for measuring lower meteorological temperatures – it will remain liquid to -61.1°C (-78.0°F).
Enterprise Technology Solutions Mercury Floor Machines PRO-175
Pro-175-17 Floor Machine 1 5 Hp Motor 175 Rpm 16 Pad
Alkali Scientific Bi-directional Liquid Transfer
Our 5L high efficiency shaker flasks are ideal for medium size scale up work They are inhigh efficiencyin in that a 5L flask has 230mm diameter footprint allowing for more of them to fit on a shaker platform The geometry of the flasks also allows for higher shaker speeds without damaging the cells Faster shaker speeds means better gas exchange higher growth rates and more yield per flask This product features pre-assembled tubing connectors and gas exchange filters allowing for the movement of liquid in and out of the Erlenmeyer flask with minimal risk of contamination Many customers have realized significant cost savings by switching to aseptic transfer systems 5L High Efficiency Erlenmeyer Flask 1 system per double wrapped sterile bag - 4 systems per case Flask made of USP grade VI virgin polycarbonate Untreated super smooth interior surface ideal for suspended cultures Attached bi-directional transfer cap Attached thermoplastic elastomer (TPE) external transfer tube No at
Cole-Parmer Digi-Sense ASTM S63C-03 Individually Calibrated Liquid-In-Glass Thermometer; -8/32C, Organic Liquid Fill
These NIST-traceable thermometers fulfill requirements for performing ASTM methods without the worry of mercury contamination. Organic fill solution is safer to clean up in the event of breakage. The calibration report states corrections to one-tenth of the smallest division, providing an accurate offset for ensuring precise measurement records.
Thermco Products Inc General lab Hg thermometer, -10 deg./260 deg.C & 20 deg./500 deg.F, 1 deg.C div & 2 deg.F, 76mm imm, 405mm
Mercury filled double scale thermometer, yellow back tubing, with toughened bulbs. Suspension ring for hanging, vertical numbering. Individual serial numbered. Packed in non-roll square tubing. Permanent markings.
Cole-Parmer Digi-Sense Calibrated Liquid-In-Glass Thermometer; -20 to 150C, 76mm Immersion, Organic Liquid Fill
These thermometers are ideal for use in applications where a very precise accurate temperature measurement is required. Thermometers are individually calibrated to NIST standards at specific temperatures and supplied with an NIST report of calibration stating corrections to one-tenth the smallest division. Thermometers feature triangular anti-roll fitting, permanently fused markings, blue spirit liquid, white background glass; are also individually serial numbered. Include an NIST-traceable statement of accuracy and a triangular-style antiroll fitting.
Hach Company Thermometer, Enviro-Safe, Non-Mercury, -10 to 225°C
Enviro-Safe non-Mercury thermometers feature an exclusive biodegradable liquid and dye. Easy to read, aesthetically distinctive due to dark green liquid and permanently fused markings. Each thermometer, individually calibrated against NIST traceable equipment, identified by unique serial number for ISO 9000 or other quality systems.
