Manual Thermometers
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
Fisherbrand™ Refrigerator/Freezer Thermometer
Science Education
A science education product.
A science education product.
Insulated sensors protect against rapid temperature changes. Fisherbrand Refrigerator/Freezer Thermometers accurately monitor temperatures in freezers, water baths, heating blocks, incubators and refrigerators with bottle-enclosed “temperature buffered” sensor.
Includes | AAA battery, Velcro™ and magnetic strips are provided for mounting of both thermometer and bottle sensor |
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Max. Temperature (English) | 158°F |
Temperature Range (English) | -58°F to +158°F |
Min. Temperature (English) | -58°F |
Weight (English) | 4 oz. |
Certifications/Compliance | Individually serial-numbered Traceable™ Certificate is provided from an ISO 17025 calibration laboratory accredited by A2LA™. It indicates traceability to standards provided by NIST™. |
Temperature Range (Metric) | -50°C to +70°C |
Max. Temperature (Metric) | 70°C |
For Use With (Application) | Monitoring liquids, air/gas or semi solids in freezers, water baths, outdoor tanks, incubators and refrigerators |
Min. Temperature (Metric) | -50°C |
Display | Digital LCD |
Weight (Metric) | 110 g |
Fisherbrand™ Dry Block/Incubator Thermometers
Science Education
A science education product.
A science education product.
Designed for use in all standard heating blocks and water baths
Fisherbrand™ Durac™ Red Spirit Thermometers
Science Education
A science education product.
A science education product.
Ideal for use in applications in which a very precise, accurate temperature measurement is required.
Fisher Science Education™ Student Grade Spirit Thermometers
Science Education
A science education product.
A science education product.
Check up to five results to perform an action.
Thermometer Fill | Red Spirit |
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Material | Glass |
Grade | Student |
Certifications/Compliance | ISO/IEC 17025:2005, A2LA, ANSI/SAMA Z236.1-1983, NIST, DKD |
For Use With (Application) | Chemical laboratories, universities, scientific institutions, food and beverage processing, petrochemical laboratories, pharmaceutical industry, medical industry, manufacturers, dairies, breweries and distilleries |
Fisherbrand™ Laboratory Grade Spirit Thermometers
Science Education
A science education product.
A science education product.
Check up to five results to perform an action.
Material | Glass |
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Grade | Laboratory |
Length (English) Overall | 12 in. |
Fisherbrand™ Traceable™ Refrigerator/Freezer Ultra™ Thermometer
Science Education
A science education product.
A science education product.
Monitor two different areas at the same time with Traceable™ Refrigerator/Freezer Ultra™ Thermometer.
Bottle Size | 2.5 x 6.3 cm (1 x 2.5 in.) |
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Min. Temperature (English) | -58°F |
Material | ABS Plastic |
Bottle Fill | Nontoxic Glycol |
Max. Temperature (Metric) | 70°C |
For Use With (Application) | Monitoring temperatures in freezers, water baths, heating blocks, incubators, and refrigerators |
Includes | Traceable™ Certificate, flip-open stand, 10 ft. micro cable, wall mounting, Velcro™, magnetic strips |
Accuracy | ±0.5°C (-30°C to +50°C), ±1°C otherwise |
Dimensions (L x W x H) | 7 x 10.8 x 2 cm (2.75 x 4.25 x 0.75 in.) |
Max. Temperature (English) | 158°F |
Temperature Range (English) | -58°F to +158°F |
Weight (English) | 4 oz. |
Certifications/Compliance | NIST Traceable |
Temperature Range (Metric) | -50°C to +70°C |
Min. Temperature (Metric) | -50°C |
Display | Digital |
Weight (Metric) | 113.4 g |
Resolution | 0.1° |
Fisher Science Education™ Student Grade Spirit Thermometers - Partial Immersion
Science Education
A science education product.
A science education product.
Check up to five results to perform an action.
Thermometer Fill | Red Spirit |
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Immersion Type | Partial Immersion |
Min. Temperature (English) | -4°F |
Material | Glass |
Grade | Student |
Subdivision | 1°C |
For Use With (Application) | Chemical laboratories, universities, scientific institutions, food and beverage processing, petrochemical laboratories, pharmaceutical industry, medical industry, manufacturers, dairies, breweries and distilleries |
Product Type | Spirit Thermometer |
Max. Temperature (English) | 230°F |
Temperature Range (English) | -4°F to +230°F |
Length (English) Overall | 11.8 in. |
Certifications/Compliance | ISO/IEC 17025:2005, A2LA, ANSI/SAMA Z236.1-1983, NIST, DKD |
Min. Temperature (Metric) | -20°C |
Immersion Length | 76 mm |
Length (Metric) Overall | 300 mm |
Fisherbrand™ Min./Max. Thermometer
Science Education
A science education product.
A science education product.
A safe alternative to glass thermometers.
Fisherbrand™ Wall Thermometer
Science Education
A science education product.
A science education product.
This red-spirit-filled thermometer with white-back glass is economical, strong and durable.
Fisherbrand™ Durac™ Plus™ Thermometers
Science Education
A science education product.
A science education product.
Ideal for use in applications in which a very precise, accurate temperature measurement is required.
Thermometer Fill | Blue Spirit |
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Material | Glass |
For Use With (Application) | Chemical laboratories, universities, scientific institutions, food and beverage processing, petrochemical laboratories |
Fisherbrand™ Laboratory Grade Spirit Thermometers - Total Immersion
Science Education
A science education product.
A science education product.
Check up to five results to perform an action.
Product Type | Spirit Thermometer |
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Thermometer Fill | Red Spirit |
Immersion Type | Total Immersion |
Min. Temperature (English) | -4°F |
Material | Glass |
Grade | Laboratory |
Length (English) Overall | 12 in. |
Min. Temperature (Metric) | -20°C |
Length (Metric) Overall | 305 mm |
H-B Instrument™ Easy-Read™ General Purpose Liquid-In-Glass Thermometers: Partial Immersion
Science Education
A science education product.
A science education product.
Easy-to-read partial immersion thermometers.
Includes | Multilanguage instructions, statement of accuracy |
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Thermometer Fill | Enviro-Safe™ Liquid |
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. |
United Scientific™ Metal-Back Thermometer
Supplier Diversity Partner
Small and/or diverse supplier based on Federal laws and SBA requirements.
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Science Education
A science education product.
Small and/or diverse supplier based on Federal laws and SBA requirements.
Learn More
A science education product.
Alcohol-filled glass Metal-Back Thermometer.
Max. Temperature (English) | 230°F |
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Thermometer Fill | 3 g of Toluene mixed with red color |
Material | Glass |
Probe Type | Non Probe |
For Use With (Application) | Measuring Temperature |
Weight (Metric) | 9.1 g |
H-B Instrument™ Galileo Thermometer
Science Education
A science education product.
A science education product.
Handcrafted and individually calibrated.
Accuracy | 1°C |
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Thermometer Fill | Non Hazardous Liquid |
Material | Glass |
H-B Instrument™ FRIO-Temp™ Glass Thermometers: Blue Organic Liquid Filled
Science Education
A science education product.
A science education product.
Ideal for use in freezers, refrigerators, incubators, ovens and blood banks.
Includes | PTFE coating |
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Product Type | Thermometer |
Bottle Size | 30 mL |
Thermometer Fill | Blue Organic Liquid |
Material | Glass |
Bottle Fill | Glass Beads |
Certifications/Compliance | ISO/IEC 17025:2005, A2LA, NIST, DAkkS |