Optimize temperature monitoring in your lab with glass thermowell chemistry precision instruments. Upgrade yours today for accurate data, enhanced research outcomes and various sizes.
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USA Lab Thermowell - Various Sizes 2L 5L
USA Lab$14.99 - $49.99Our USA Lab Glass Thermowell is a device to reduce the risk of leaks while taking temperature readings. It is basically a long glass tube which is sealed on one end and partially filled with a fluid to transfer heat such as silicone oil. A thermometer is...
Thermowells From USA Lab
Accurate Temperature Monitoring for Glass Reactors and Flasks
Thermowells make it easy to measure internal temperatures safely and precisely without contaminating your materials. USA Lab's borosilicate thermowells are designed for use with glass reactors, round-bottom flasks, and distillation systems, providing accurate and consistent readings while protecting probes from direct contact with reaction contents.
Designed for Clean, Reliable Measurement
Borosilicate 3.3 Glass
Resists heat, chemicals, and repeated thermal cycling to maintain clarity, strength, and reliability during extended reaction runs or frequent heating and cooling.
Precision Fit
Designed to fit standard 2L and 5L reactor ports, providing the right depth and alignment so your temperature probe reaches the solution without wobbling or shifting.
Probe Protection
Keeps thermometers and sensors safe from corrosion or contamination by isolating them from the reaction mixture to extend probe life and improve measurement accuracy.
Vacuum Compatible Seal
Maintains system integrity under vacuum or inert gas conditions, enabling stable reactions without leaks, air bubbles, or pressure loss.
Compare Thermowell Options
| Model | Compatible Vessel Size | Joint | Features |
|---|---|---|---|
| USA Lab Thermowell | 2L - 24/40 5L - 24/40 Top Port - 24/40 Top Port - 14/20 |
24/40 | Protects sensors, ensures accurate readings, vacuum-safe design |
Practical Design for Everyday Use
- Simple installation — Slides easily into glass joints or reactor lids.
- Easy to clean — Smooth walls allow quick rinsing between uses.
- Reusable and long-lasting — Maintains clarity and precision over time.
- Universal compatibility — Works with most 24/40 or similar jointed glass systems.
Choosing the Right Thermowell
- Using a 2L reactor? → Select the smaller thermowell for optimal depth and stability.
- Working with 5L or larger vessels? → Choose the extended-length thermowell for full probe coverage.
- Running under vacuum or inert gas? → The sealed design keeps your system leak-free and stable.
Why Choose USA Lab Thermowells
- Compatible with USA Lab reactors and distillation glassware.
- Vacuum-rated and safe for use with common lab thermocouples.
- Backed by U.S.-based customer support and fast shipping.
Equipment That Works With Your Thermowell
Pair your thermowell with:
- Glass reactors to monitor internal temperature during chemical reactions
- Round-bottom flasks for temperature control in distillation setups
- Digital thermometers or probes to capture real-time temperature data
