• Dynacal Perm Tubes with certified permeation rates traceable to NIST for precise results

Chromatography

Dynacal Perm Tubes with certified permeation rates traceable to NIST for precise results

Dynacal permeation tubes, or ‘perm tubes’, are small, inert capsules containing a pure chemical compound in a two phase equilibrium between its gas phase and its liquid or solid phase. Held at a precise, constant temperature in the permeation chamber of a Dynacalibrator, the device emits the compound through its permeable portion at a constant rate. Permeation rates are certified using standards traceable to NIST by the most basic and accurate laboratory procedure - measuring the gravimetric weight loss over a known time at a known temperature.


Digital Edition

Lab Asia Dec 2025

December 2025

Chromatography Articles- Cutting-edge sample preparation tools help laboratories to stay ahead of the curveMass Spectrometry & Spectroscopy Articles- Unlocking the complexity of metabolomics: Pushi...

View all digital editions

Events

Smart Factory Expo 2026

Jan 21 2026 Tokyo, Japan

Nano Tech 2026

Jan 28 2026 Tokyo, Japan

Medical Fair India 2026

Jan 29 2026 New Delhi, India

SLAS 2026

Feb 07 2026 Boston, MA, USA

Asia Pharma Expo/Asia Lab Expo

Feb 12 2026 Dhaka, Bangladesh

View all events