ASTM S22F Non-Mercury Thermometer, 204 to 218F, NIST

ASTM S22F Non-Mercury Thermometer: Precision and Safety for Viscosity Testing

Introducing the ASTM S22F Non-Mercury Thermometer, engineered for superior accuracy and safety in critical laboratory applications. This total immersion thermometer offers a precise measurement range from 204 to 218°F, featuring fine 0.2°F graduations for highly accurate readings. Designed to meet the rigorous demands of ASTM E1, E77, and E2251 standards, it serves as a reliable alternative to traditional mercury thermometers without compromising performance.

Key Features and Benefits:

• Expanded Temperature Range: Measures accurately from 204°F to 218°F, ideal for specific viscosity test methods.
• High Precision Graduations: 0.2°F divisions ensure meticulous and repeatable measurements.
• Total Immersion Design: Calibrated to provide accurate readings when immersed to the indicated temperature line, ensuring consistent results in Saybolt viscosity baths.
• Non-Mercury Safety: Utilizes a proprietary, blue liquid filling that is biodegradable, non-toxic, and non-hazardous. This eliminates the risks associated with mercury, making it safer for both laboratory personnel and the environment.
• Enhanced Readability: The dark blue indicating fluid contrasts sharply against a white-backed stem, allowing for quick and clear temperature observation.
• Robust Construction: With a total length of 11 inches (280mm), it's built for durability and consistent performance in demanding lab environments.
• ASTM Compliance: Fully meets all specified requirements for use in referenced ASTM test methods, ensuring regulatory adherence and dependable results.

NIST Traceable Calibration for Unmatched Confidence:

Each ASTM S22F Non-Mercury Thermometer comes with a NIST Traceable Certificate of Calibration, providing documented assurance of its accuracy. This certificate is issued by an ISO/IEC accredited laboratory, signifying that all calibration procedures are performed under stringent quality controls and meet international standards.

The calibration process is thorough, involving:

• Five-Point Calibration: Measurements are taken at five distinct temperature points across the thermometer's range to verify linearity and accuracy.
• Direct Comparison Method: Calibration is performed by direct comparison in a high-stability liquid bath against a highly accurate Precision Reference Thermometer (PRT) and Standard Platinum Resistance Thermometer (SPRT).
• Pre-Testing Inspection: Before calibration, each thermometer undergoes a meticulous inspection for any physical defects such as cracks or liquid-column separations, ensuring the integrity of the instrument.

This comprehensive calibration guarantees that your measurements are directly traceable to national standards, providing unparalleled confidence in your test results.

Proper Handling and Storage:

To maintain the integrity of the non-mercury fluid column and prevent separation, it is crucial to store these thermometers vertically. Utilizing a specialized storage rack is highly recommended. For applications requiring additional protection or thermal stability, particularly in ovens or other exposed environments, a Thermometer Well can be used to safeguard the glass instrument and ensure consistent thermal conditions.

• ASTM Number: S22F
• Temperature Range: 204 to 218°F
• Immersion: Total
• Division: 0.2°F
• Type: Non-Mercury
• Length: 11 inches (280mm)