ASTM S21F Non-Mercury Thermometer, 174 to 188F, NIST Calibration
These liquid-in-glass thermometers have physical and performance characteristics identical to ASTM thermometers for their referenced applications, but have not yet been reviewed and accepted by ASTM for these purposes. They use a safe blue indicating liquid that is biodegradable, nontoxic, and nonhazardous. Dark blue color is easily read against the white-backed stem.
Comes with a NIST Traceable Certificate of Calibration. The NIST Traceable Certificate of Calibration is a five-point calibration certificate from an ISO/IEC accredited laboratory. This accreditation is your assurance that the calibration is performed in a qualified, controlled lab. The calibration on the glass thermometer is performed using direct comparison in a high-stability liquid bath with a Precision Reference Thermometer (PRT) and Standard Platinum Resistance Thermometer (SPRT) and displays. The thermometer is also inspected for cracks and liquid-column separations before testing. Measurements are performed at 5 temperature points.
ASTM Number S21F
Temperature Range 174 to 188F
Immersion Total
Application Saybolt Viscosity
Division 0.2 degrees
Type Non-Mercury
Length 11in (280mm)
To prevent fluid column separation, always store Non-Mercury Thermometers vertically, using a storage rack.
Thermometer Well provides protection and thermal stabilization for glass laboratory thermometers used in ovens or other exposed environments.
View the full line of ASTM Mercury Filled Thermometers and the ASTM Non-Mercury Thermometers
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Thermometers Calibrated: Calibrate for Accurate Readings
The ASTM S21F non-mercury thermometer is a high-quality measuring instrument designed for precise and accurate temperature readings. It is suitable for a variety of applications, including Saybolt viscosity testing.
This thermometer features a temperature range of 174 to 188 degrees Fahrenheit, allowing you to measure within a specific range with great accuracy. It has a division of 0.2 degrees, ensuring that you can obtain precise measurements for your desired applications. The length of the thermometer is 11 inches (280 mm), providing a comfortable size for handling and reading temperature values.
One of the standout features of this thermometer is its use of a safe blue indicating liquid, which is both biodegradable and non-toxic. This makes it a safer alternative to traditional mercury thermometers, ensuring the safety of users and the environment. The dark blue color of the indicating liquid allows for easy and clear reading against the white-backed stem, ensuring that you can quickly and accurately interpret temperature values.
The ASTM S21F non-mercury thermometer comes with a NIST Traceable Certificate of Calibration, providing you with the assurance that the calibration has been performed in a qualified, controlled laboratory. This certificate is a valuable addition and ensures that the thermometer meets the highest standards of accuracy and performance.
To further protect and stabilize the thermometer, a thermometer well is available as an optional accessory. This well is designed to provide thermal stability and protection for the thermometer when used in ovens or other exposed environments.
For proper storage, it is recommended to store the non-mercury thermometer vertically using a storage rack. This helps prevent fluid column separation and ensures the longevity and accuracy of the thermometer.
In conclusion, the ASTM S21F non-mercury thermometer is a reliable and accurate instrument for a range of applications. With its biodegradable and non-toxic blue indicating liquid, NIST Traceable Certificate of Calibration, and optional thermometer well for added protection, it is a top choice for professionals who require precise temperature measurements.