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™ Lab Thermometer
A general purpose/stirring thermometer for a wide application of laboratory needs.
Product Type | Liquid Filled Thermometer |
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Thermometer Fill | Red Spirit |
For Use With (Application) | General use |
Fisherbrand™ Red Spirit Filled Total Immersion Thermometers
A general purpose/stirring thermometer for a wide application of laboratory needs. Fisherbrand™ Red Spirit Filled Total Immersion Thermometers have a white backing for readability.
Fisherbrand™ Red Spirit Filled Total Immersion Thermometers
A general purpose/stirring thermometer for a wide application of laboratory needs. Fisherbrand™ Red Spirit Filled Total Immersion Thermometers have a white backing for readability.
Material | Glass |
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Fisherbrand™ -20 to +110 Lo Tox™ Laboratory Immersion Thermometer
Lo Tox™ organic filling is specially chosen to achieve wide temperature span and provide the lowest practical levels of hazard.
Alla France™ Partial Immersion Precision Thermometer
Use these thermometers for a variety of applications. Alla France™ Partial Immersion Precision Thermometers are manufactured using yellow Sodocalcique glass with a diameter of 6 to 7mm.
Fisherbrand™ Traceable™ Refrigerator/Freezer Alarm Thermometers
Provides accurate reading when freezer/refrigerator doors are open with temperature-buffered, sensor-sealed in bottled glycol solution
Fisherbrand™ Traceable™ Vaccine Refrigerator/Freezer Thermometer
Monitors temperature of vaccine in freezers, water baths, heating blocks, incubators, and refrigerators with enclosed temperature-buffered sensor.
Height (Metric) | 19 mm |
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Length (Metric) Cable | 25.4 cm |
Length (Metric) | 70 mm |
Length (English) | 2.75 in. |
Min. Temperature (English) | -58°F |
Material | ABS Plastic |
Bottle Fill | Glycol |
Max. Temperature (Metric) | 70°C |
For Use With (Application) | Monitoring temperature in freezers, water baths, heating blocks, incubators and refrigerators |
Battery Type | AA Alkaline (1) |
Accuracy | ±1°C |
Max. Temperature (English) | 158°F |
Temperature Range (English) | -58°F to +158°F |
Length (English) Cable | 10 in. |
Weight (English) | 4 oz. |
Certifications/Compliance | ISO 17025, A2LA, NIST |
Temperature Range (Metric) | -50°C to +70°C |
Min. Temperature (Metric) | -50°C |
Display | Digital LCD |
Resolution | 1°C |
Height (English) | 0.75 in. |
Cole-Parmer™ Digi-Sense™ Traceable™ General-Purpose Digital Thermometer with Calibration
Use the Digi-Sense™ Traceable™ General-Purpose Digital Thermometer with Calibration to monitor minimum and maximum temperatures at a single glance.
H-B Instrument™ Double-Safe™ PFA Safety Coated, Liquid-In-Glass Thermometers: Partial Immersion
Greener Choice Product
This product offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More About the Greener Choice Program
This product offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More About the Greener Choice Program
Protect your workplace and ensure a safe environment
Includes | Multilanguage instructions, statement of accuracy |
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Thermometer Fill | Enviro-Safe™ Liquid |
Immersion Type | Partial Immersion |
Material | Glass |
Grade | Precision |
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™ Enviro-Safe™ General Purpose Liquid-In-Glass Thermometers
Certified environmentally safe thermometers replace dangerous mercury.
Brannan™ Batch Sampling Oven Thermometer with Calibration Certificate
Precision test oven thermometers sealed into a 30 mL polypropylene bottle containing a heat transfer medium, ideally suited to monitor the temperature of samples in a controlled storage. Complete with traceable calibration.
Height (Metric) | 14.5 cm |
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Width (English) | 0.14 in. |
Length (Metric) | 14.5 cm |
Bottle Size | 30 mL |
Thermometer Fill | Aluminium oxide crystals |
Min. Temperature (English) | 68°F |
Material | Glass |
Bottle Fill | Aluminium oxide crystals |
Subdivision | 1.0°C |
Max. Temperature (Metric) | +130°C |
For Use With (Application) | Oven Batch Sampling |
Width (Metric) | 3.5 cm |
Battery Type | None |
Includes | Polypropylene bottle and glass thermometer |
Accuracy | ± 2°C |
Max. Temperature (English) | 266°F |
Temperature Range (English) | 68°F to 266°F |
Weight (English) | 3.2099 oz. |
Temperature Range (Metric) | +20°C to +130°C |
Min. Temperature (Metric) | +20°C |
Display | None |
Weight (Metric) | 91 g |
Height (English) | 5.71 in. |
Alla France™ Total Immersion Precision Thermometer
Use these thermometers for a variety of applications. Alla France™ Total Immersion Precision Thermometers are ideal for battery testing.
Material | Glass |
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Width (Metric) | 1.2 cm |