Manual Thermometers
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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).
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Filtered Search Results
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H-B Instrument™ Easy-Read™ General Purpose Liquid-In-Glass Thermometers: Total Immersion
Easy-to-read total immersion thermometers
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Thermometer Fill | Enviro-Safe™ Liquid |
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Material | Glass |
Certifications/Compliance | Traceable to NIST. Includes a multi-language (English, French, German, Italian, Portuguese, and Spanish) Statement of Accuracy and Traceability. |
For Use With (Application) | Ideal for use in chemical/petrochemical laboratories, universities, scientific institutions, food and beverage processing, pharmaceutical and medical industries, dairies, breweries and distilleries. |
H-B Instrument™ Easy-Read™ General Purpose Liquid-In-Glass Thermometers: Partial Immersion
Easy-to-read partial immersion thermometers
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Thermometer Fill | Enviro-Safe™ Liquid |
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Material | Glass |
Certifications/Compliance | Traceable to NIST. Includes a multi-language (English, French, German, Italian, Portuguese, and Spanish) Statement of Accuracy and Traceability. |
For Use With (Application) | Ideal for use in chemical/petrochemical laboratories, universities, scientific institutions, food and beverage processing, pharmaceutical and medical industries, dairies, breweries and distilleries. |
H-B Instrument™ Durac™ Plus™ Calibrated Partial Immersion Thermometers
For precise measurements featuring an individual serial number with a Calibration Report
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Thermometer Fill | Organic |
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Immersion Type | Partial Immersion |
Material | Glass |
Certifications/Compliance | ISO/IEC 17025:2005, A2LA, NIST |
For Use With (Application) | Chemical laboratories, universities, scientific institutions, food and beverage processing, petrochemical laboratories, pharmaceutical industry, medical industry, manufacturers, dairies, breweries and distilleries |
Immersion Length | 76 mm |
H-B Instrument™ Durac™ Plus™ Liquid-In-Glass Armored Thermometer
Features an open protective nickel plated brass armor
Includes | Multilanguage instructions, Statement of Traceability indicating accuracy |
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Thermometer Fill | Blue Organic Liquid |
Immersion Type | Partial Immersion |
Material | Glass |
Certifications/Compliance | ISO/IEC 17025:2005, A2LA, NIST, ANSI/SAMA Z236.1-1983 |
Immersion Length | 76 mm |
H-B Instrument™ Durac™ Bi-Metallic Thermometer: Range: 10° to 260°C (50° to 500°F), 64mm Dial
With 2.5% or 2° accuracy—ideal for measuring temperatures in pipes, griddles and hot plates
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H-B Instrument™ Durac™ Plus™ Precision Verification Thermometers
To verify sample temperatures in freezers, refrigerators, incubators and ovens.
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Includes | Multilanguage instructions, statement of accuracy indicating accuracy traceable to NIST |
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Product Type | Precision Verification Thermometer |
Thermometer Fill | Blue Organic Liquid |
Bottle Fill | Glass Beads |
Certifications/Compliance | ISO/IEC 17025:2005, A2LA, NIST, DAkkS |
H-B Instrument™ Enviro-Safe™ Dry Block/Incubator Thermometers
EnviroKleen™-certified environmentally friendly with 100% non-toxic, non-hazardous, biodegradable liquid fill. H-B Instrument™ Enviro-Safe™ Dry Block/Incubator Thermometers are 175mm (6.9 in.) liquid-in-glass, 35mm immersion thermometers.
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Accuracy | 0.5°C |
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Thermometer Fill | Enviro-Safe™ Liquid |
Material | Glass |
Subdivision | 0.5°C |
Length (English) Overall | 6.9 in. |
Certifications/Compliance | ISO/IEC 17025:2005, A2LA, NIST |
Temperature Range (Metric) | 24°C to 57°C |
Max. Temperature (Metric) | 57°C |
Min. Temperature (Metric) | 24°C |
Immersion Length | 35 mm |
Length (Metric) Overall | 175 mm |
H-B Instrument™ Durac™ Bi-Metallic Oven Thermometer, Range: 10deg. to 260deg.C
Stainless-steel construction with plastic dial face
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H-B Instrument™ Durac™ Plus™ Calibrated Total Immersion Thermometers
With accuracy of 1.5°C or better.
Immersion Type | Total Immersion |
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Material | Glass |
Certifications/Compliance | ISO/IEC 17025:2005, A2LA, NIST |
For Use With (Application) | Chemical laboratories, universities, scientific institutions, food and beverage processing, petrochemical laboratories, pharmaceutical industry, medical industry, manufacturers, dairies, breweries and distilleries |
H-B Instrument™ SP Scienceware™ Durac™ Plus™ ASTM-Like Total Immersion Laboratory Thermometers
Designed for use in quality control laboratories or when mercury filled thermometers cannot be used, but ASTM standards are still needed. H-B Instrument - SP Scienceware™ Durac™ Plus™ ASTM-Like Total Immersion Laboratory Thermometers are safer to use than their mercury filled counterparts.
Thermometer Fill | Blue Organic Liquid |
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Material | Glass |
Certifications/Compliance | ASTM, ISO 9000 |
For Use With (Application) | Quality control laboratories or where ISO 9000 standards are in place |
H-B Instrument™ Durac™ Plus™ ASTM-Like Partial Immersion Laboratory Thermometers
Safer than their mercury counterparts
Thermometer Fill | Blue Organic Liquid |
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Material | Glass |
Certifications/Compliance | ASTM |
For Use With (Application) | Quality control laboratories or where ISO 9000 standards are in place |
H-B Instrument™ FRIO-Temp™ Calibrated Electronic Verification Lollipop Stem Thermometers for Refrigerator
For use in digital verification of sample temperatures inside refrigerators. H-B Instrument™ FRIO-Temp™ Calibrated Electronic Verification Lollipop Stem Thermometers render accurate temperature reading without sample contamination.
Calibration Points | 4°C Refrigerator |
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Accuracy | ±0.5°C |
Width (English) | 1.5 in. |
Product Type | Digital Thermometer |
Temperature Range (Metric) | 0°C to 70°C |
Max. Temperature (Metric) | 70°C |
Probe Type | Stainless Steel |
For Use With (Application) | Digital verification of sample temperatures inside refrigerators |
Width (Metric) | 38 mm |
Min. Temperature (Metric) | 0°C |
Calibrated | Yes |
Resolution | 0.1°C |
H-B Instrument™ Durac™ Bi-Metallic Thermometers: 50mm Dial
With 2.5% or 2° accuracy—ideal for measuring temperatures in pipes, griddles and hot plates
Length (Metric) Probe | 200 mm |
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Includes | Stainless Steel probe, multilanguage Statement of Test and Calibration, beaker clip with built in adjustment tool |
Accuracy | 0.01 |
Display Dimensions | 50 mm (2 in.) |
Lens Material | Polycarbonate |
Dial Size (Metric) | 50 mm |
Material | Metal |
Length (English) Probe | 7.9 in. |
Length (English) Overall | 7.9 in. |
Dial Size (English) | 2 in. |
For Use With (Application) | Petrochemical, oil and gas, waste water, pharmaceutical, compost, food and beverage storage and processing, asphalt, mining, utilities, automotive, marine, photographic |
Immersion Length | 50 mm in liquids or 100 mm in gas |
Length (Metric) Overall | 200 mm |
H-B Instrument™ FRIO-Temp™ Electronic Verification Lollipop Stem Thermometers for Ambient Rooms
For use in digital verification of sample temperatures in ambient calibration. H-B Instrument™ FRIO-Temp™ Electronic Verification Lollipop Stem Thermometers for Ambient Rooms render accurate temperature reading without sample contamination.
Calibration Points | 22°C Ambient |
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Accuracy | ±0.5°C |
Width (English) | 1.5 in. |
Product Type | Digital Thermometer |
Temperature Range (Metric) | 0°C to 70°C |
Max. Temperature (Metric) | 70°C |
Probe Type | Stainless Steel |
For Use With (Application) | Digital verification of sample temperatures in ambient calibration |
Width (Metric) | 38 mm |
Min. Temperature (Metric) | 0°C |
Calibrated | Yes |
Resolution | 0.1°C |
H-B Frio-Temp SP Scienceware™ Calibrated Electronic Verification Thermometers, Calibrated for Incubators
Digital thermometers verify sample temperatures in freezers, refrigerators, incubators and ovens. Available calibrated for specific applications and equipment.
Includes | Multi-language instructions (English, French, German, Italian, Portuguese and Spanish) |
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Calibration Points | 37°C Incubator |
Certifications/Compliance | Tested and calibrated in H-B's exclusive triple accredited/registered ISO/IEC 17025:2005, A2LA accredited laboratory (Cert No.2448.01), against equipment whose calibration is traceable to NIST. Individually serialized, CE marked. |
For Use With (Application) | Temperature Calibration and Verification |
Calibrated | Incubator |
Resolution | 0.1°C/°F |