BET Specific Surface Area
When to choose this option: You need to measure the specific surface area of a powder or porous material (catalysts, pharmaceutical powders, cement, batteries).
The BET (Brunauer-Emmett-Teller) method determines the specific surface area of a material based on the physical adsorption of a gas (most often nitrogen) onto the sample surface at liquid nitrogen temperature. The same type of measurement (gas physisorption) most often also provides mesopore/micropore size distribution and pore volume. Micromeritics offers a full range of instruments – from a simple instrument for routine QC control (Gemini) to advanced R&D platforms that combine physisorption with chemisorption (3Flex) – so choosing an instrument is primarily a question of throughput, resolution and any need for additional analyses on the same sample.
Which instrument should you choose?
- Routine QC, one sample per measurement – simple, reliable, more affordable solution → Gemini
- Routine/QC laboratory with multiple samples per day – 3 independent ports, fast BET measurement → TriStar II Plus
- Large number of samples, production/service QC – modular up to 6 ports (2460) or 6 fixed ports with 12 degas stations (2425) → ASAP 2460 & 2425
- Advanced R&D – highest resolution, ultra-micropores, vapor sorption and/or chemisorption on the same platform (MOFs, zeolites, catalysts) → 3Flex
