ASTM Equivalent S21F Non-Mercury Thermometer, 174 to 188F
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.
ASTM Number S21F
Temperature Range 174 to 188F
Immersion Total
Application Saybolt Viscosity
Division 0.2 degrees
Type Non-Mercury
Length 11in (280mm)
ASTM E2251
ASTM E77
ASTM E1
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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The ASTM Equivalent S21F Non-Mercury Thermometer, with a temperature range of 174 to 188F, is a liquid-in-glass thermometer that offers the same physical and performance characteristics as ASTM thermometers for their referenced applications. While these thermometers have not yet been reviewed and accepted by ASTM for these purposes, they guarantee accurate and reliable temperature readings.
Designed for Saybolt viscosity applications, this thermometer is equipped with a safe blue indicating liquid that is not only biodegradable but also nontoxic and nonhazardous. Its dark blue color makes it easy to read against the white-backed stem, ensuring clarity and precision in temperature measurements.
With an ASTM Number of S21F, this non-mercury thermometer follows strict industry standards to ensure its quality and accuracy. It has a temperature division of 0.2 degrees, allowing for precise readings within its specified range. Measuring at 11 inches (280mm) in length, it offers a sufficient size for easy handling and visibility.
The ASTM Equivalent S21F Non-Mercury Thermometer meets various test methods, including ASTM E2251, ASTM E77, and ASTM E1. These standards ensure reliability and accuracy in temperature measurement for various applications.
To ensure the longevity and accuracy of this thermometer, it is recommended to store it vertically using a storage rack to prevent fluid column separation. Additionally, using a thermometer well provides protection and thermal stabilization for glass laboratory thermometers used in ovens or other exposed environments.
For those interested in other types of thermometers, there is a full line of ASTM Mercury Filled Thermometers and ASTM Non-Mercury Thermometers available. These thermometers cater to different applications and deliver accurate temperature measurements.
To learn more about thermometers, their uses, and conversions between Fahrenheit and Celsius, check out our related blogs. These blogs cover topics such as thermometers with mercury, precision ASTM thermometers, converting temperatures, and the role of thermometers in concrete curing.