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).
Thermco Products Inc NIST compliant, factory certified glass Spirit thermometer, -1 deg./51 deg.C, 0.2C div, 76mm imm, certified at 0 deg.C, 10 deg.C, 20 deg.C, 30 deg.C, 37 deg.C, 40 deg.C, 50 deg.C, 105 deg.C, 400mm
Thermco Certified Thermometers are used in temperature verification and calibration procedures. These instruments can be used to calibrate Liquid-In- Glass, RTD, Thermistors, Thermocouples, and Bi-Metal Thermometers. The certified thermometers are carefully inspected to insure they conform to exact specifications and are certified against NlST standards. Each thermometer is furnished with a document proving traceability and a felt-lined leatherette storage case.
Ace Glass, Inc. 76mm immersion non-merc thermometer 10/30, -10 to 250c
76mm immersion non-merc thermometer 10/30, -10 to 250c
Thermco Products Inc Tissue Flotation Bath Thermometer, -15/105Deg.C x 1.0Deg.C, TOTAL Imm, Spirit
Non-mercury thermometer used in tissue flotation bath to monitor the temperature. The ACC535S1 thermometer lies on the bottom of the bath. It has a rectangular ring attached, so it will not roll. The ring also allows the thermometer scale to face up, so the scale is easy to read the correct temperature. The red liquid in the thermometer is easy to see through the bath liquid
Thermco Products Inc NIST compliant, factory certified glass Spirit thermometer, 34.5 deg./46 deg.C, 0.1C div, 76mm imm, certified at 37 deg.C, 44.5 deg.C, 240mm
These spirit-filled glass thermometers meet EPA requirements. Coliform incubator thermometers are designed to use in incubators or baths during coliform tests. Use them to monitor equipment. Each includes an individual serial number and certificate of accuracy. The ACC713BLS is certified and traceable to N.I.S.T.
Cole-Parmer Digi-Sense Dry Block/Incubator Liquid-In-Glass Thermometer; 20 to 100C, 76mm Immersion, Organic Liquid Fill
These thermometers are designed for use in specific applications. These Durac thermometers feature markings that are permanently printed on the glass, individually serialized, and red spirit liquid that has a dark scale contrasts against a white background. Some thermometers are PFA coated for added safety which may cause a slight change in accuracy up to 1 division. Dry block thermometers - designed for use in all standard heating blocks and water baths with most having arrows indicating critical temperatures.
Cole-Parmer H-B Instrument B61004-0100 FRIO-Temp Refrigerator Verification Thermometer; -5 to 15C
Accurately monitor temperatures in freezers, refrigerators, incubators, ovens, and other environments where stability is required. All Thermometers are filled with Enviro-Safe liquid and supplied with a unbreakable plastic bottle filled with Enviro-Safe liquid or glass beads. The thermometer can be removed from the bottle for recalibration if needed. Thermometers are PFA coated for enhanced safety in case of breakage. Use the magnetic or hook-and-loop attachment strip to securely attach the bottle to object such as a metal wall or door. All Enviro-Safe™ glass thermometers contain an environmentally friendly non-mercury liquid that is 100% certified as non-toxic, non-hazardous, and fully biodegradable. In case of breakage the liquid can be cleaned up easily with soap and water. Each thermometer features a green liquid and white back glass. These thermometers also feature recyclable packaging, RoHS compliant, individual serial numbered and have a statement of accuracy.
Chemglass Life Sciences Adapter, Thermometer, Inlet, 10° Offset, 29/26 Inner Joint
Adapter, Thermometer, Inlet, 10¿ Offset, 29/26 Inner Joint. Adapter has a #7 Chem-Thread at the top for vacuum tight seal of plain stem thermometers or any other tube having an O.D. between 4 and 7mm. When used with vertical side neck flasks, thermometers or bleed tubes can be angled into the bottom of the flask. Supplied complete with a compression cap and Viton o-ring.
Sigma Aldrich Fine Chemicals Biosciences Easy-ReadR thermometer tem1EA
Easy-to-read thermometers with black printing on a bright yellow background. filled with contrasting black non-hazardous Enviro-Safe liquid. Calibrated with NIST DKD standards.