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Quantachrome Instruments has introduced a 0.1-torr transducer XR option for its Autosorb-IQ surface area and pore size analyser to meet the demands of nanoporous materials research.

The company claimed the Autosorb-IQ series of gas sorption analysers has redefined gas sorption for porous materials characterisation with the dual sample capability of IQ2 version (the ability to analyse two microporous samples simultaneously); a coolant dewar that can hold liquid nitrogen for 90 or more hours (standard on all models); turbo-pumped sample preparation as standard on the MP version; software that can control up to four instruments, hybrid flow and static chemisorption on the C-TCD version; and many configurable options, including vapour dosing capability.

This latest option extends the low-pressure physisorption capability of MP and C versions by a factor of 10, down to the 10E-8 relative pressure range for nitrogen adsorption at liquid nitrogen temperature, by incorporating a 0.1-torr pressure transducer in place of the standard 1-torr lowest-range transducer (these models retain the additional 10- and 1,000-torr transducers required for higher-pressure measurements).

The dual sample IQ2 model is offered with dual 0.1-torr transducers, one for each sample manifold, to maintain its simultaneous measurement capability across all pressure ranges.

The 0.1-torr transducer is internally heated for improved stability and reproducibility.

The sensitivity and resolution of the optional 0.1-torr transducer is 10 times that of the standard 1-torr transducer at relative pressures below 1 x 10E-4 P/Po.

This is said to benefit researchers working with specially synthesised nano- and microporous materials often only available in very small quantities.

The Autosorb-IQ’s metal O-rings and metal gasket seals in critical measurement zones ensure its ability to measure reproducibly in the extended low-pressure range.

Upgrade kits are available to users of existing Autosorb-IQs.

Quantachrome Instruments

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