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
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.
Brannan™ Digital Fridge Thermometer with Alarm
Sounds an alarm sounds and flashes LED lights for 5 seconds every minute when the temperature goes outside the safety zone. Brannan™ Digital Fridge Thermometer with Alarm includes 1m probe cable and suction pad.
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. |
Fisherbrand™ Traceable™ Refrigerator/Freezer Ultra™ Thermometer
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 |
Max. Temperature (Metric) | 70°C |
For Use With (Application) | Monitoring temperatures in freezers, water baths, heating blocks, incubators, and refrigerators |
Accuracy | ±0.5°C between -30° to +50°C, otherwise ±1°C |
For Use With (Equipment) | Monitoring Temperature in Freezer, Water Bath, Heating Block, Incubator and Refrigerator |
Product Type | Refrigerator/Freezer Ultra Thermometer |
Max. Temperature (English) | 158°F |
Temperature Range (English) | -58°F to +158°F |
Weight (English) | 4 oz. |
Temperature Range (Metric) | -50°C to +70°C |
Min. Temperature (Metric) | -50°C |
Calibrated | Yes |
Display | Digital |
Resolution | 0.1° |
Brannan™ Digital Quick-Set Max Min Thermometer
Study and robust updated max min thermometer combining analogue styling with digital LCD display for enhanced accuracy and readability
Brannan™ Waterproof Classic Digital Max Min Thermometer
Waterproof to IP66, making it a professional standard max min thermometer. Hygienic and easy to clean, it's ideal for laboratories, catering kitchens and medical environments. Safe to use in a fridge, it lends itself well to medicine or food storage.
Cole-Parmer™ Digi-Sense™ Traceable™ Jumbo Refrigerator/Freezer Thermometer with Calibration
The Digi-Sense™ Traceable™ Jumbo Refrigerator/Freezer Thermometer with Calibration with an alarm that provides an alert when the temperature rises above or falls below a set point.
H-B Instrument™ FRIO-Temp™ Calibrated Electronic Verification Lollipop Stem Thermometers for Incubator
For use in digital verification of sample temperatures inside incubators. H-B Instrument™ FRIO-Temp™ Calibrated Electronic Verification Lollipop Stem Thermometers for Incubator render accurate temperature reading without sample contamination.
Calibration Points | 37°C Incubator |
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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 incubators |
Width (Metric) | 38 mm |
Min. Temperature (Metric) | 0°C |
Calibrated | Yes |
Resolution | 0.1°C |
H-B Instrument™ FRIO-Temp™ Calibrated Electronic Verification Lollipop Stem Thermometers
For use in digital verification of sample temperatures in general applications. H-B Instrument™ FRIO-Temp™ Calibrated Electronic Verification Lollipop Stem Thermometers render accurate temperature reading without sample contamination.
Calibration Points | 0°, 50°C |
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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 general applications |
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 Refrigerators
Digital thermometers verify sample temperatures in freezers, refrigerators, incubators and ovens. Available calibrated for specific applications and equipment.
Min. Temperature (English) | -58°F |
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Length (English) Probe | 1.2 in. |
Max. Temperature (Metric) | 70°C |
For Use With (Application) | Temperature Calibration and Verification |
Length (Metric) Probe | 30 mm |
Includes | Multi-language instructions (English, French, German, Italian, Portuguese and Spanish) |
Calibration Points | 4°C Refrigerator Zone 1 External |
Accuracy | ±1°C |
For Use With (Equipment) | Freezers, Refrigerators, Incubators, Ovens |
Max. Temperature (English) | 158°F |
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. |
Probe Type | Waterproof |
Min. Temperature (Metric) | -50°C |
Calibrated | Yes |
Resolution | 0.1°C/°F |
H-B Instrument™ SP Scienceware™ Calibrated Electronic Verification Thermometers, Calibrated for Freezers
Digital thermometers verify sample temperatures in freezers, refrigerators, incubators and ovens. Available calibrated for specific applications and equipment.
Min. Temperature (English) | -58°F |
---|---|
Length (English) Probe | 1.2 in. |
Max. Temperature (Metric) | 70°C |
For Use With (Application) | Temperature Calibration and Verification |
Length (Metric) Probe | 30 mm |
Includes | Multi-language instructions (English, French, German, Italian, Portuguese and Spanish) |
Calibration Points | -20°C (Freezer Zone) |
Accuracy | ±1°C |
For Use With (Equipment) | Freezers, Refrigerators, Incubators, Ovens |
Max. Temperature (English) | 158°F |
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. |
Probe Type | Waterproof |
Min. Temperature (Metric) | -50°C |
Calibrated | Freezer |
Resolution | 0.1°C/°F |
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) |
---|---|
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 |