Laboratory Thermometers for ASTM and Critical Temperature Work
Still using mercury in thermometers for your ASTM testing? We got them.
Prefer a digital thermometer in place of mercury for ASTM and other temperature-critical measurements? We got those too.
Liquid-In-Glass and Digital Options
SECO offers ASTM mercury thermometers, ASTM non-mercury blue spirit thermometers, and digital precision thermometers for laboratory and industrial use. EPA notes that mercury thermometers are being phased out in many settings where suitable alternatives exist, but many laboratories still need specific thermometer formats for method-driven work.
Whether you need traditional liquid-filled glass or a digital replacement, the goal is the same: reliable temperature measurement for critical applications.
Mercury-Filled Glass Thermometers
SECO offers ASTM mercury thermometers for specific test methods and liquid-in-glass applications. These models are a strong fit for laboratories that still require traditional mercury-filled glass thermometers for established workflows, method alignment, or internal procedures.
- Designed for ASTM and application-specific testing.
- Suitable when a traditional mercury-filled thermometer is still required by your workflow.
- Relevant for labs that continue to use mercury thermometers in method-specific or legacy testing setups.
- Available in a broad range of partial immersion, total immersion, and precision options.
Non-Mercury Glass Thermometers
SECO also offers ASTM blue spirit thermometers and non-mercury liquid-in-glass alternatives. These are well suited for labs that want to reduce mercury handling and disposal concerns while staying with a familiar glass thermometer format.
- ASTM blue spirit and non-mercury liquid-filled options.
- Useful where labs want liquid-in-glass format without mercury.
- A practical option when reducing breakage, handling, and disposal concerns tied to mercury is a priority.
- Good fit for laboratories standardizing around safer handling practices.
Featured Digital Thermometers
For labs moving away from mercury, SECO offers digital precision models suited for ASTM and other temperature-critical measurements. EPA identifies digital thermometers as a common mercury-free alternative, and these instruments are a practical option when you want easier readout, faster response, and a safer replacement to glass thermometers.
CT375DIG
SECO offers the SUPRA precision RTD platinum thermometer with on-meter memory. It is designed for high-accuracy temperature measurement where tight control and dependable readout matter.
- Measurement range: -100 to 400 C.
- Accuracy: ±(0.05% reading 0.01°C)
- Resolution: 0.01°C
CT376DIG
SECO offers the SUPRA precision RTD platinum thermometer with data logger capability. It includes built-in data logging, date and time recording, Windows software, and RS-232/USB interface support.
- 16,000-record data logger.
- Measurement range: -100 to 400 C.
- Accuracy: ±(0.05% reading 0.01°C) with 0.01°C resolution.
ACCD0215
V215 8 inch stem precision thermometer. It is designed for use anywhere a precision glass stem thermometer is used, including ASTM replacement use in place of hazardous mercury thermometers.
- Pt100 sensor according to EN 60751.
- Range: -50 to 250°C
- Accuracy: ±0.05°C
- Resolution: 0.1/0.01°C
- Includes a 3-point calibration certificate at 0/75/150°C
- MAX-MIN-AVG function and auto-rotating display.
- 0.5 second measuring interval.
ACCD0315
V315 12 inch stem precision thermometer. It is a practical ASTM digital replacement for mercury thermometers, with fast response, rotating display, and a field-ready handheld format.
- Pt100 sensor according to EN 60751.
- Range: -50 to 250°C
- Accuracy: ±0.05°C
- Resolution: 0.1/0.01°C
- Includes a 3-point calibration certificate at 0/75/150°C
- MAX-MIN-AVG function and auto-rotating display.
- 0.5 second measuring interval.
Choosing Between Glass and Digital
Glass thermometers remain relevant where specific ASTM methods, legacy SOPs, or customer specifications call for liquid-in-glass formats. Digital thermometers are often preferred where labs want mercury-free operation, quick stabilization, easier readability, and modern recordkeeping features.
Need Help Finding the Right Thermometer?
If you cannot find the exact thermometer you need, reach out to SECO. A member of our team can help you identify the right product for your ASTM method, calibration requirement, or general laboratory application.
Additional Resource