The STN Stainless-Steel Thermal Capsule pairs with temperature probes, acting as a liquid-free thermal buffer inside temperature-controlled chambers. By dampening short-term fluctuations, it delivers more stable, accurate readings—essential for temperature sensitive material's storage.
Traditionally, pharmaceutical storage uses glycol-filled bottles to dampen transient spikes from frequent door openings. However, liquid buffers introduce issues—evaporation, spillage, and periodic refilling—and make it inconvenient to insert a standard probe during annual calibration.
Our stainless-steel thermal capsule eliminates these problems: it’s liquid-free and maintenance-free, features a hygienic, wipe-clean design, and includes a second connector for easily inserting a reference probe. It provides thermal buffering performance comparable to glycol bottles without the mess or downtime (validated by test results—see diagram below).
The thermal capsule features two top connectors:
- One for the probe monitoring chamber temperature.
- One optional port for an additional probe, such as a standard probe for calibration.
Both connectors are detachable, and STN provides custom connector options to fit different probe sizes. The capsule also has a detachable bottom, allowing easy inspection of probes inside.
With its precision engineering and user-friendly design, the STN Thermal Capsule as a thermal buffer block is the ultimate substitute for glycol-filled bottles—ensuring stability, accuracy, and peace of mind for critical cold-chain applications with
Key Features & Benefits
- Superior Temperature Stability – Effectively minimizes fluctuations for more reliable readings.
- Wide Compatibility – Suitable for storage conditions from 2–8 °C down to –80 °C.
- Liquid-Free Design – No risk of spills, evaporation, or maintenance.
- Durable & Hygienic – Constructed from 304L stainless steel for longevity and easy cleaning.
- Flexible Probe Integration – Accommodates up to two probes (Ø6 mm max) with replaceable probe holders and custom connector options.
- Convenient Design – Detachable bottom allows quick inspection of probes inside.
- Calibrate with ease: Integrated port accepts a standard reference probe for fast, hygienic annual calibration.
Precision. Reliability. Protection. Choose STN’s Thermal Capsule for vaccines and critical samples.