ASTM S66F Non-Mercury Thermometer, 167 to 221F, NIST

ASTM S66F Non-Mercury Thermometer: Precision, Safety, and Certified Accuracy

The ASTM S66F Non-Mercury Thermometer delivers exceptional accuracy and reliability, designed for critical temperature measurements across diverse applications. With a precise measurement range of 167 to 221°F and fine 0.2°F graduations, this total immersion thermometer is an indispensable tool for laboratories and industrial settings where exact temperature readings are paramount. Its robust construction ensures consistent performance, making it suitable for a wide array of precision testing requirements and beyond.

Advanced Non-Mercury Technology for Safety and Performance: Moving beyond traditional mercury thermometers, the ASTM S66F utilizes a proprietary, safe blue liquid as its indicating fluid. This advanced formulation offers the same high-performance characteristics as mercury thermometers, but with significant environmental and safety advantages. The fluid is biodegradable, non-toxic, and non-hazardous, eliminating concerns associated with mercury spills and disposal. Its dark blue color is highly visible and contrasts sharply against the thermometer's white-backed stem, ensuring clear and effortless readings even under varying light conditions.

Key Features and Regulatory Compliance:

• Unwavering Precision: Fine 0.2°F divisions ensure highly accurate temperature detection.
• Total Immersion Design: Engineered for applications where the entire column of liquid is exposed to the temperature being measured, providing true and accurate readings.
• Environmentally Friendly: Features a non-hazardous, biodegradable indicating fluid, promoting a safer working environment.
• Superior Legibility: The high-contrast dark blue fluid against a white stem minimizes reading errors.
• Industry Standard Compliance: Meets rigorous requirements of ASTM E1, E77, and E2251 standards, verifying its suitability for professional use.
• Specialized Application: Specifically approved for use in Saybolt Viscosity Testing, demonstrating its reliability in specific critical procedures.

NIST Traceable Certificate of Calibration for Unquestionable Accuracy: Each ASTM S66F thermometer is supplied with a NIST Traceable Certificate of Calibration. This certification signifies that the thermometer has undergone a stringent five-point calibration by an ISO/IEC accredited laboratory. This accreditation provides assurance that the calibration process adheres to the highest standards, performed in a qualified and controlled environment. The calibration procedure involves a direct comparison against a Precision Reference Thermometer (PRT) and Standard Platinum Resistance Thermometer (SPRT) in a high-stability liquid bath. Prior to testing, each thermometer is meticulously inspected for any physical imperfections, such as cracks or liquid-column separations, guaranteeing optimal performance from the outset.

Detailed Specifications:

• ASTM Number: S66F
• Temperature Range: 167 to 221°F
• Immersion: Total
• Primary Application: Precision Testing
• Division (Graduation): 0.2°F
• Thermometer Type: Non-Mercury, Liquid-in-Glass
• Overall Length: 15.7 inches (400 mm)

Care and Maintenance Recommendations: To maintain the integrity of the fluid column and ensure long-term accuracy, always store Non-Mercury Thermometers vertically using a dedicated storage rack. For enhanced protection and thermal stabilization in challenging environments like ovens, consider utilizing a Thermometer Well, which safeguards glass laboratory thermometers while facilitating accurate measurements.