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).
PEAK SCIENTIFIC INSTRUMENTS LTD PRECISION HYDROGEN SL200 AUTO
502285720 PRECISION HYDROGEN SL200 AUTO
Chemglass Life Sciences Adapter, Thermometer, Inlet, 10° Offset, 29/26 Inner Joint
Adapter, Thermometer, Inlet, 10¿ Offset, 29/26 Inner Joint. Adapter has a #7 Chem-Thread at the top for vacuum tight seal of plain stem thermometers or any other tube having an O.D. between 4 and 7mm. When used with vertical side neck flasks, thermometers or bleed tubes can be angled into the bottom of the flask. Supplied complete with a compression cap and Viton o-ring.
Ace Glass, Inc. Thermometer, 20 to 300°F, 8" length, 50mm immersion
20 to 300F enviro-safe economy thermometer with a 50mm immersion length. 8 inches long. Thermometer is filled with organic black liquid, and is made from lead-free glass. Does not contain mercury. Comes with a NIST traceable statement of accuracy.
Ace Glass, Inc. Thermometer, -20 to 150c, 12" length, 76mm immersion
Thermometer, -20 to 150c, 12" length, 76mm immersion
Chemglass Life Sciences Thermometer, Non-Mercury, Partial Immersion, -20°C to 150°C, 305mm OAL
Thermometer, Non-Mercury, Partial Immersion, -20¿C to 150¿C, 305mm OAL. 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, and is calibrated for 76mm (3") immersion.
Chemglass Life Sciences Thermometer, Non-Mercury, 10/18 Joint, 25mm Immersion, -10C to 250C
Thermometer, Non-Mercury, 10/18 Joint, 25mm Immersion, -10C to 250C. 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 10/18 inner ground joint. All ranges have 1° subdivisions. Immersion is measured from the bottom of the joint to the bottom of non-mercury bulb.
Chemglass Life Sciences Thermometer, Non-Mercury, 10/30 Joint, 25mm Immersion, -20°C to 150°C
Thermometer, Non-Mercury, 10/30 Joint, 25mm Immersion, -20¿C to 150¿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.
Thermco Products Inc Precision Laboratory Thermometer, Red Spirit Filled, Non-Mercury Fractional Degree, 5, 76mm Partial Immersion, 610mm Length
Precision Laboratory Thermometer, Red Spirit Filled, Non-Mercury Fractional Degree, 5, 76mm Partial Immersion, 610mm Length. NIST TraceableNon-Mercury Red Spirit Filled Thermometers. Total and Partial Immersion. Individually Serializedrialized.
Research Products International Corp Thermometer, 2 Solid Probe Sensors
High accuracy dual channel thermometers feature 0.01° high resolution with accuracy of ± 0.30°C. Individual channels provide simultaneous monitoring of temperatures in separate locations. Display exact time and date when a min/max reading occurred and alarm sounded. Min/Max temperatures are programmable in 0.1°C increments over entire range of -50° up to +70°C. Temperature buffered solution probes contain a non-hazardous glycol mixture that eliminates rapid temperature changes when opening refrigerator or freezer door.
Available with one miniature size sensor that is chemical resistance and waterproof for use in water baths, incubators or dry block heaters. Supplied with Traceable Calibration Certificate (NIST), stand, mounting strips and battery.
Thermco Products Inc NIST compliant, factory certified glass Spirit thermometer, 0 deg./300 deg.F, 2.0Fdiv, 76mm imm, certified at 32 deg.F, 100 deg.F, 200 deg.F, 300 deg.F, 305mm
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.