The CryoSync accessory for the autosorb iQ analyzers enables the user to carry out precise, isothermal sorption measurements at <0.005 K in a wide range of cryogenic temperatures (82 K to >115 K) using readily available liquid nitrogen as cryogen. This compact accessory allows you to easily perform advanced sorption measurements, including argon isotherms at 87.3K and multi-isothermal heat of adsorption measurements.