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).
USA Scientific Inc Direct Therm CryoTag 1.05x0.5
Direct Thermal Cryo-Tags, red labels for 0.5 mL tubes, 1.05 inL x 0.5 inch W, 1000/roll. For direct thermal printers.
USA Scientific Inc Direct Therm Solveresist label
Direct Thermal Solvent-Resistant labels, white, for 1.5 mL tubes, 1.5inch L x 0.5inch W, 750/roll. For direct thermal printers.
USA Scientific Inc Direct Therm Cryo-Tags, red
Direct Thermal Combo Cryo-Tags, red, 1.5 inch L x 0.5 inch W and 3/8 inch diameter, 500 each/roll. For direct thermal printers.
Med Vet International Lab Thermometer w/Metal Back, Dual Scale C/F
Lab Thermometer w/metal back, dual scale C/F
Med Vet International Medline Thermometer, Hud1647, Each
Clear housing with "easy read" red liquid column Fahrenheit and Celsius scales from 50 degrees to 120 degrees and 10 degrees to 50 degrees respectively Probe fits most temperature ports and aerosol tee adaptors
Revvity Health Sciences Inc Ceramic Beads Pre-Filled 2 mL 96 Deep Well Plates, 1.4 mm (2/pk)
Ceramic Beads Pre-Filled 2 mL 96 Deep Well Plates, 1.4 mm (2/pk)
Grainger Dial Indicator 0 to 1mm 50-0-50
The Mitutoyo Horizontal Dial Test Indicator is a precision measuring instrument used to accurately measure small distances and variations. It has a measuring range of 0-0.5" (0-12.7mm) with graduations of 0.001" (0.01mm). The indicator has a horizontal dial face with a bezel clamp to mount on surfaces. It can measure variations in travel, vibration, runout, deflection and more. The indicator has a carbide contact point and comes with a NIST traceable certificate. It is made in Japan by Mitutoyo, a leading manufacturer of precision measuring tools.
