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
Cole-Parmer Digi-Sense Dry Block/Incubator Liquid-In-Glass Thermometer; 0 to 100C, 35mm Immersion, Organic Liquid Fill
These thermometers are designed for use in specific applications. These Durac thermometers feature markings that are permanently printed on the glass, individually serialized, and red spirit liquid that has a dark scale contrasts against a white background. Some thermometers are PFA coated for added safety which may cause a slight change in accuracy up to 1 division. Dry block thermometers - designed for use in all standard heating blocks and water baths with most having arrows indicating critical temperatures.
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 H-B Instrument B61004-0100 FRIO-Temp Refrigerator Verification Thermometer; -5 to 15C
Accurately monitor temperatures in freezers, refrigerators, incubators, ovens, and other environments where stability is required. All Thermometers are filled with Enviro-Safe liquid and supplied with a unbreakable plastic bottle filled with Enviro-Safe liquid or glass beads. The thermometer can be removed from the bottle for recalibration if needed. Thermometers are PFA coated for enhanced safety in case of breakage. Use the magnetic or hook-and-loop attachment strip to securely attach the bottle to object such as a metal wall or door. All Enviro-Safe™ glass thermometers contain an environmentally friendly non-mercury liquid that is 100% certified as non-toxic, non-hazardous, and fully biodegradable. In case of breakage the liquid can be cleaned up easily with soap and water. Each thermometer features a green liquid and white back glass. These thermometers also feature recyclable packaging, RoHS compliant, individual serial numbered and have a statement of accuracy.
Thermco Products Inc FACTORY CERT THERMOMETER
ASTM 114C thermometer (red spirit) certified at the ASTM recommended temperatures and calibrated against N.I.S.T. standards. A N.I.S.T. traceable document is completed in the Thermco ISO17025/ILAC accedited laboratory.
Deltatrak Inc CERT REFRIG/FREEZ THERMOMETER, Packaged individually
The 12237 Certified Alarm Thermometer comes with a Min/Max memory, a large, easy-to-read LCD, and high/low alarm settings. The thermometer monitors temperature inside freezers, refrigerators, or cold holding display cases. The sensor has a 3 meter cable and a stainless steel, blunt probe enclosed in a sealed plastic bottle of propylene glycol. This enclosure prevents false alarms because the measurements of the probe are not impacted by rapid temperature fluctuations caused by frequent door openings that occur.Measurement Range -58F to 158F (-50C to 70C) Operating Range 14F to 122F (-10C to 50C) Accuracy 1.0F (-22F to 131F) 0.5C (-30C to 55C); otherwise 1.8F (1.0C) Display Resolution 0.1F/C Display Reading Update 10 seconds. High and Low Alarms with audible buzzer and flashing red light. Display in C/F Certification/Calibration CE mark, NIST traceable, RoHS, WEEE; Manufacturers Certificate of Compliance
Thermco Products Inc CERTIFIED CALIBRATED -1 - 110C
Thermco’s 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.
Thermco Products Inc Accu-Safe Enclosed Chamber Bottle thermometer, Refrigerator, Spirit, -2 deg./10 deg.C, 0.1 deg.C div, 240mm, 60ml bio-safe glycol/H2O
NC0621888 SPIRIT REFRIG THERMO-2 TO 10C
Thermco Products Inc NIST compliant, factory certified glass Spirit thermometer, -1 deg./51 deg.C, 0.2C div, 76mm imm, certified at 0 deg.C, 10 deg.C, 20 deg.C, 30 deg.C, 37 deg.C, 40 deg.C, 50 deg.C, 105 deg.C, 400mm
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.
Thermco Products Inc ASTM 120C, Kenimatic Viscosity, 38.6/41.4C, 0.05C div, TOTAL imm, 310mm, certified at 0 deg.C, 40 deg.C, 41 deg.C
ASTM 120C thermometer certified at the ASTM recommended temperatures and calibrated against N.I.S.T. standards. A N.I.S.T. traceable document is completed in the Thermco ISO17025/ILAC accedited laboratory.
Thermco Products Inc CERT W/THERM 0,100,101C POINTS
ASTM 121C thermometer (Hg) certified at the ASTM recommended temperatures and calibrated against N.I.S.T. standards. A N.I.S.T. traceable document is completed in the Thermco ISO17025/ILAC accedited laboratory.
Chemglass Life Sciences Thermometer, Non-Mercury Low Temperature, Partial Immersion, -100°C to 50°C
Thermometer, Non-Mercury Low Temperature, Partial Immersion, -100°C to 50°C. Thermometer is mineral spirit filled to eliminate workplace and environmental hazards associated with mercury. All ranges have 1º subdivisions. Thermometer has a white back and a 6 to 7mm outer diameter. Available in total or partial 76mm (3") immersion.