ASTM S64F Non-Mercury Thermometer, 77 to 131F, NIST

ASTM S64F Non-Mercury Thermometer: Precision Measurement with NIST Calibration

Engineered for exceptional accuracy and safety, the ASTM S64F Non-Mercury Thermometer offers a precise measurement range of 77 to 131°F, with fine 0.2° graduations. Designed for total immersion, it ensures maximum accuracy when the entire sensing portion and liquid column are submerged in the medium being measured. Its robust 15.7in (400mm) length makes it suitable for a variety of laboratory and industrial applications requiring meticulous temperature control, particularly those specified for precision testing such as Saybolt Viscosity.

This advanced liquid-in-glass thermometer adheres strictly to ASTM standard test method requirements (E1, E77, E2251), delivering performance characteristics identical to traditional ASTM Mercury Thermometers, but with significantly enhanced safety and environmental benefits. It utilizes a specially formulated, safe blue liquid – a proprietary blend that is not only biodegradable and nontoxic but also completely nonhazardous. This innovative indicating fluid provides excellent contrast against the thermometer's white-backed stem, ensuring effortless and accurate readings even in varied lighting conditions, making it an ideal choice for environments where mercury is prohibited or undesirable.

Key Features:

• Eco-Friendly Design: Utilizes a non-hazardous, biodegradable, and nontoxic blue indicating fluid.
• High Visibility: Dark blue fluid ensures clear and easy readings against the white-backed stem.
• ASTM Compliance: Meets stringent ASTM E1, E77, E2251 requirements for reliable performance.
• Precision Application: Specifically acceptable for use in Saybolt Viscosity Testing and other precision applications.
• Total Immersion: Designed for maximum accuracy when fully submerged.

Each ASTM S64F thermometer comes complete with a comprehensive NIST Traceable Certificate of Calibration. This five-point calibration is executed by an ISO/IEC 17025 accredited laboratory, guaranteeing that every calibration adheres to the highest international standards of quality and precision. This accreditation provides absolute assurance that the testing is conducted in a meticulously controlled and qualified environment. The calibration process involves a direct comparison of the thermometer against a highly stable liquid bath, using both a Precision Reference Thermometer (PRT) and a Standard Platinum Resistance Thermometer (SPRT) for unparalleled accuracy. Prior to calibration, each instrument undergoes a rigorous visual inspection for any physical defects like cracks or liquid-column separations, ensuring its integrity. Measurements are meticulously taken at five distinct temperature points across its range, providing a robust verification of its accuracy and reliability.

Specifications:

• ASTM Number: S64F
• Temperature Range: 77 to 131°F
• Immersion: Total
• Application: Precision
• Division: 0.2 degrees
• Type: Non-Mercury
• Length: 15.7 in (400 mm)

Care & Accessories:

For optimal longevity and accuracy, it is crucial to store all Non-Mercury Thermometers vertically. Utilizing a dedicated storage rack is highly recommended to prevent fluid column separation, which can impact reading precision and the lifespan of the instrument.

Consider pairing your thermometer with a Thermometer Well. These essential accessories offer superior physical protection for glass laboratory thermometers when used in harsh or exposed environments like ovens. Furthermore, a well helps achieve thermal stabilization, ensuring more consistent and reliable temperature readings.