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).
Med Vet International C & A Scientific Red Spirit FIlled Thermometers -20C to 110C X 1, Total Immersion, White, 10/Box
C & A Scientific Red Spirit FIlled Thermometers -20C to 110C X 1, Total Immersion, White, 10/Box
Med Vet International Thermometer, Partial Immersion, -20° to 150° C, 10/Box
Non-toxic red-filled thermometers can be used in most laboratory applications. Anti-roll device included. 10/Box
Med Vet International Thermometer, Partial Immersion, Dual Scale C/F, White
Non-toxic red-filled thermometers can be used in most laboratory applications. Anti-roll device included
Alkali Scientific Bi-directional Liquid Transfer
Our 5L high efficiency shaker flasks (C10422-AZB090A)are ideal for medium size scale up work They are inhigh efficiencyin in that a 5L flask has 230mm diameter footprint allowing for more of them to fit on a shaker platform The geometry of the flasks also allows for higher shaker speeds without damaging the cells Faster shaker speeds means better gas exchange higher growth rates and more yield per flask This product features pre-assembled tubing connectors and gas exchange filters allowing for the movement of liquid in and out of the Erlenmeyer flask with minimal risk of contamination Many customers have realized significant cost savings by switching to aseptic transfer systems 5L High Efficiency Erlenmeyer Flask 1 system per double wrapped sterile bag - 4 systems per case Flask made of USP grade VI virgin polycarbonate Untreated super smooth interior surface ideal for suspended cultures Attached bi-directional transfer cap Attached thermoplastic elastomer (TPE) external tra
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.
