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).
Thermco Products Inc Accu-Safe Non-Mercury Laboratory Thermometer
Accu-Safe Non-Mercury Laboratory Thermometer | -1 to 101°C | 0.2°C Div | 450mm Length
Med Vet International Medline Thermometer, Hud1647, 50/Case
Clear housing with "easy read" red liquid column Fahrenheit and Celsius scales from 50 degrees to 120 degrees and 10 degrees to 50 degrees respectively Probe fits most temperature ports and aerosol tee adaptors
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.
Ace Glass, Inc. Thermometer, -20 to 150c, 12" length, 76mm immersion
Thermometer, -20 to 150c, 12" length, 76mm immersion
Thermco Products Inc Precision lab Hg thermometer, Fractional degree, -1 deg./201 deg.C, 0.2 deg.C div, 76mm imm, 610mm
High precision mercury SAMA thermometer that meet or exceed the specifications of the American National Standards Institute. Specifications approve by N.I.S.T. and ASTM. Individually serialized and permanetly marked. Made with precision yellow backed tubing. SAMA No. CP50
Thermco Products Inc Armored Thermometer Certified at 120°C for Dairies
Autoclave Maximum Registering Thermometers are for validating autoclaves by monitoring the highest temperature attained during a sterilization cycle. These thermometers operate on the same principle as thermometers designed to measure fevers: the highest temperature attained is recorded, and doesn’t recede until the thermometer is shaken down.
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 Male
Ptc Instruments THERM SPOT CHECK 0-525C
Direct Contact Spot-Check Thermometer, Temp Range 10 to 525 deg.C, Accuracy +/-2% of full scale range, Dimensions: dia. 1-3/4 in. (4.4cm), Height 1/2 in. (13cm), Weight 1/2 oz.
Grainger Cls 2 Trnsfrmr 30VA Enclosed Foot
The Edwards Signaling 30VA Class 2 Transformer is a UL Listed Class 2 transformer that steps down 120VAC to 24VAC. It has a maximum load rating of 30VA and provides short circuit protection. This transformer can be used for doorbells, chimes, nurse call systems, security systems, fire alarm systems, and other low voltage control applications. The transformer has an all-steel construction with a scratch resistant powder coated finish, measures 5-1/4" H x 4-3/8" W x 3-3/8" D, and weighs 4 lbs. It comes with a 5 year warranty.