ASTM S12F Non-Mercury Thermometer, -5 to 215F, NIST

ASTM S12F Non-Mercury Thermometer, -5 to 215F, NIST

The ASTM S12F Non-Mercury Thermometer is an advanced, environmentally responsible instrument designed for precise temperature measurement, particularly within critical laboratory and industrial applications. Boasting a broad measurement range from -5 to 215°F (-20 to 102°C) with exceptional 0.5-degree graduations, this thermometer ensures high accuracy for a variety of tasks. Its total immersion design means the entire column of liquid is exposed to the temperature being measured, providing the most accurate readings possible for consistent and reliable results.

Primarily specified for use in gravity testing, a common procedure in petroleum and chemical industries to determine specific gravity or density, the S12F is also versatile enough for numerous other applications requiring high-precision temperature monitoring. With a total length of 16.7 inches (425mm), it is well-suited for deeper vessels and specialized equipment.

This non-mercury thermometer adheres strictly to ASTM E1, E77, and E2251 requirements, guaranteeing compliance with industry-recognized standards for laboratory glassware and liquid-in-glass thermometers. Unlike traditional mercury thermometers, the S12F utilizes a proprietary, safe blue liquid as an indicating fluid. This formula is biodegradable, non-toxic, and non-hazardous, eliminating the environmental and safety concerns associated with mercury, while delivering the same high-performance characteristics and accuracy. The vibrant dark blue fluid stands out crisply against the white-backed stem, ensuring superior readability and reducing measurement errors. It is also explicitly approved for specialized applications such as Saybolt Viscosity Testing.

Each ASTM S12F Non-Mercury Thermometer comes with an NIST Traceable Certificate of Calibration, providing an unparalleled level of confidence in its accuracy. This certificate is issued by an ISO/IEC 17025 accredited laboratory, ensuring that the calibration process meets stringent international standards for competence and impartiality. The calibration involves a rigorous five-point direct comparison against a Precision Reference Thermometer (PRT) and Standard Platinum Resistance Thermometer (SPRT) in a high-stability liquid bath. Before calibration, each thermometer undergoes meticulous inspection for any physical imperfections like cracks or liquid-column separations that could compromise its integrity or accuracy. This thorough process guarantees that your thermometer delivers reliable and precise measurements right out of the box, crucial for regulatory compliance and quality control.

Key Specifications:

• ASTM Number: S12F
• Temperature Range: -5 to 215°F (-20 to 102°C)
• Immersion: Total
• Primary Application: Gravity Testing
• Division (Graduations): 0.5 degrees
• Type: Non-Mercury, liquid-in-glass
• Length: 16.7in (425mm)
• Fluid: Safe, biodegradable blue indicating liquid
• Compliance: Meets ASTM E1, E77, E2251 requirements

Maintenance and Accessories: To maintain the integrity of the fluid column and ensure long-term accuracy, always store non-mercury thermometers vertically, ideally using a specialized storage rack. For enhanced protection and to achieve thermal stabilization in challenging environments such as ovens or other exposed laboratory setups, a compatible Thermometer Well can be used, shielding the glass thermometer from direct exposure and temperature fluctuations.