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 NIST TRACEABLE - Factory Certified Glass Thermometer, Spirit Filled
Thermco Certified Thermometers are used in temperature verification and calibration procedures. These instruments can be used to calibrate Liquid-InGlass, RTD, Thermistors, Thermocouples, and Bi-Metal Thermometers. The certified thermometers are carefully inspected to insure they conform to exact specifications and are certified against NlST standards. Each thermometer is furnished with a document proving traceability and a felt-lined leatherette storage case. Range: -20-110°C, Divisions: 1°C, Immersions: Total, Certified at: 0°C, 37°C, 56°C, Length: 305mm
Thermco Products Inc Coliform Incubator Thermometer, 34.5/46C x 0.1C, Red Spirit, 76mm Imm, 240mm long
These spirit-filled glass thermometers meet EPA requirements. Coliform incubator thermometers are designed to use in incubators or baths during coliform tests. Use them to monitor equipment. Each includes an individual serial number and certificate of accuracy. The ACC713BLS can be certified and made traceable to N.I.S.T.
Thermco Products Inc Accu-Safe Enclosed Chamber Bottle thermometer, Ambient/Rm, Spirit, 10 deg./30 deg.C, 0.5 deg.C div, 140mm, 30ml bio-safe glycol/H2O. Each bottle thermometer have their own unique serial number and are supplied with a NIST Traceable Certificate.
NC0634164 AMBIENT ROOM THERMOMETER
Thermco Products Inc General lab Hg thermometer, -10 deg./400 deg.C, 2 deg.C div, 76mm imm, 405mm
Mercury filled thermometer, yellow back tubing, with toughened bulbs. Suspension ring for hanging, vertical numbering. Individual serial numbered. Packed in non-roll square tubing. Permanent markings.
Thermco Products Inc Precision lab Hg thermometer, Fractional degree, -1 deg./201 deg.C, 0.1 deg.C div, TOTAL 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. CT50
Cole-Parmer Digi-Sense Oven Verification Thermometer; 50 to 200C, PFA Coated
Accurately monitor temperatures in freezers, refrigerators, incubators, ovens, and other environments where stability is required. These thermometers are supplied in a media-filled unbreakable plastic bottle and can be removed from the bottle for recalibration. Use the magnetic attachment with pressure-sensitive backing to attach the bottle to a metal wall or door. Thermometers feature permanently fused markings, blue spirit liquid, white background glass; are also individually serial numbered. Include an statement of accuracy and a triangular-style antiroll fitting.
VWR INTERNATIONAL INC Oven Thermometer (with 30 mL bottle of Glass Beads)
Range: +20 to 130°C, Length: 145 mm, Accuracy: ±1.5°C; ±2°C above 100°C, Divisions: 1°C
Taylor Precision Products Wall Thermometer
This item has a minimum order quantity of 6 per supplier requirements. Weather resistant and rust proof. Vertically curved design. Easy to read numerals. Blue and Green. Aluminum wall mount bracket
Thermco Products Inc NIST Traceable Thermometer, -1/201C x 0.5C, Blue Spirit, 76mm Imm, 430mm long, Factory Certified @ 0, 25, 37, 44.5, 56, 105, 121, 180, 200C
Thermco Certified Thermometers are used in temperature verification and calibration procedures. These instruments can be used to calibrate Liquid-In- Glass, RTD, Thermistors, Thermocouples, and Bi-Metal Thermometers. The certified thermometers are carefully inspected to insure they conform to exact specifications and are certified against NlST standards. Each thermometer is furnished with a document proving traceability and a felt-lined leatherette storage case.
Chemglass Life Sciences Thermometer, Non-Mercury Low Temperature, Total Immersion, -100°C to 50°C
Thermometer, Non-Mercury Low Temperature, Total Immersion, -100¿C to 50¿C. Thermometer is mineral spirit filled to eliminate workplace and environmental hazards associated with mercury. All ranges have 1¿ subdivisions. Thermometer has a white back and a 6 to 7mm outer diameter. Available in total or partial 76mm (3") immersion.
Thermco Products Inc Incubator Enclosed Bottle Thermometer, 18/50C x 0.5C, Red Spirit, Bio-Safe Glycol/Water - 30 ml, Certified
NC0796075 ACCUSAFE INCUBATOR THERMOMETER
Chemglass Life Sciences Thermometer, Non-Mercury, 10/30 Joint, 51mm Immersion, -10°C to 250°C
Thermometer, Non-Mercury, 10/30 Joint, 51mm Immersion, -10¿C to 250¿C. Thermometer is mineral spirit filled to eliminate workplace and environmental hazards associated with mercury. Thermometer has a white back, a 6 to 7mm outer diameter, and a standard taper 10/30 inner ground joint. All ranges have 1¿ subdivisions. Immersion is measured from the bottom of the joint to the bottom of the mercury bulb.