ASTM S20C Non-Mercury Thermometer, 57 to 65C, NIST

ASTM S20C Non-Mercury Thermometer, 57 to 65C, NIST

Introducing the ASTM S20C Non-Mercury Thermometer: Your reliable, safe, and precise solution for critical temperature measurements in Saybolt Viscosity applications. Calibrated to NIST traceable standards, this instrument offers unparalleled accuracy and peace of mind in the laboratory.

Advanced Non-Mercury Design for Enhanced Safety and Environment: This liquid-in-glass thermometer is meticulously engineered to mirror the physical and performance characteristics of traditional ASTM S20C thermometers, offering a safer alternative without compromising on quality. It utilizes a special blue indicating liquid that is biodegradable, non-toxic, and non-hazardous, eliminating the risks associated with mercury spills and disposal. The vibrant dark blue color contrasts sharply against the white-backed stem, ensuring exceptionally clear and effortless readings. While it conforms to the design and performance specifications of its ASTM counterpart, it serves as a modern, eco-friendly option.

NIST Traceable Calibration for Unquestionable Accuracy: Each thermometer is supplied with a comprehensive NIST Traceable Certificate of Calibration, guaranteeing its precision and compliance. This five-point calibration is performed by an ISO/IEC 17025 accredited laboratory, affirming that the testing is conducted under a rigorously controlled and competent quality management system. The calibration process involves direct comparison against a Precision Reference Thermometer (PRT) and Standard Platinum Resistance Thermometer (SPRT) in a high-stability liquid bath, covering 5 critical temperature points across the working range. Prior to calibration, each thermometer undergoes a thorough inspection for any cracks or fluid column separations, ensuring the integrity of every measurement. This meticulous process provides the confidence and audit readiness required for demanding laboratory environments.

Key Specifications:

• ASTM Number: S20C
• Temperature Range: 57 to 65°C
• Immersion: Total (essential for accurate Saybolt Viscosity testing as the entire liquid column must be at the measured temperature)
• Application: Saybolt Viscosity
• Division: 0.1 degrees Celsius
• Type: Non-Mercury (Safe Blue Indicating Liquid)
• Length: 11 inches (280mm)

Optimal Care for Longevity and Performance: To prevent potential fluid column separation—a common issue with liquid-in-glass thermometers that can affect accuracy—always store this Non-Mercury Thermometer vertically. Utilizing a dedicated storage rack is highly recommended to maintain its condition. For applications in ovens or other exposed environments, consider using a Thermometer Well. This accessory provides crucial physical protection against breakage and helps stabilize the thermometer's temperature, ensuring more consistent and reliable readings over its lifespan.