ISO, IP, BS and ASTM certified Thermometers
A calibrated thermometer is essential for accurate measurements in laboratory and industrial environments. Our high-quality calibrated lab thermometers meet the highest standards and ensure reliable measurement results according to international norms such as ASTM, BS, IP and ISO. These precision instruments are specifically designed for standardized material testing procedures and are ideal for determining flash point, viscosity, distillation range and other critical parameters in fuel and petroleum analysis.
Calibrated ASTM, IP & BS Thermometers for Maximum Accuracy
We offer ASTM-certified thermometers, but also provide models certified by BS, IP, and ISO, ensuring precise readings within the respective tolerances of each standard. The independent operation of our devices ensures their usability in various locations, making them perfect for research institutions, chemical companies, and industrial laboratories.
Available as digital thermometers or in traditional glass designs, they cater to specific measurement requirements. The durable glass stems feature acid- and alkali-resistant graduations, which are permanently diffused into the surface, ensuring longevity. Thanks to their robust construction, our calibrated thermometers are suitable for diverse applications, from food analysis to petrochemical testing.



Total and Partial Immersion Thermometers
Every ASTM thermometer is built for a defined immersion depth, because the wetted length of the stem influences the reading. We supply both total immersion thermometers, which are immersed up to the top of the liquid column, and partial immersion thermometers, which are immersed only to a marked line on the stem. Selecting the correct immersion type is what keeps results comparable between laboratories and compliant with the relevant ASTM, IP or BS test method. Both stem type and enclosed type designs are available.
ASTM Certified Thermometers: Calibration Certificates & Safety Options
For maximum precision, we offer factory calibration certificates or traceable DAkkS calibration certificates upon request.
Additionally, we provide a high-quality protective coating made of FEP/PTFE, safeguarding your calibrated thermometer from external influences. This significantly enhances the longevity and reliability of the measuring instruments.
Trust in Quality: Certified ASTM, BS, IP & ISO Thermometers
Our selection includes ISO-certified thermometers, as well as models adhering to ASTM, BS, and IP standards, ensuring the highest accuracy for businesses that rely on precise temperature measurement. With our premium products, you can optimize your testing processes and ensure precise results for research and industry.
Contact us today for personalized consultation!





Unique all-round service by our Ludwig Schneider Messtechnik GmbH
Our DAkkS calibration laboratory is accredited according to DIN EN ISO/IEC 17025:2018 for the measurands temperature and density. We measure temperatures from -196 °C to 1,820 °C and guarantee the highest precision according to all international standards. Together with our extensive product range and our modern calibration laboratory, we offer you a comprehensive all-round service.

Your satisfaction is our drive
Glasmuseum Wertheim![]()
Marianne Tazlari![]()
Uwe Schobner
Sehr kompetente Beratung, vielen Dank
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Technical Data
| FEATURE | VARIANTS |
|---|---|
| Measuring range | -50°C to +400°C |
| Filling | Organic (red/blue)
Metallic |
| Forms | stem type
enclosed type |
| Norms |
ASTM IP BS ISO DIN |
| Temperature measuring units |
Degree Celsius Degree Fahrenheit |
| Immersion |
Total or partially immersing |
| Accessories |
Metal protection case Metal ferrules Scoop sampler (wood) |





