The terahertz data further confirmed the information from the ssNMR measurements regarding the miscibility of sugar and protein phases as discussed above. There was no indication from the terahertz data that any phase separation had taken place. showed that T 1⇢ measurements over a range of temperatures can be used to probe changes in molecular mobility of protein formulations. Given the considerable measurement time and the technical complexity required to measure ssNMR at low temperatures unfortunately we were only able to perform our ssNMR measurements at a static temperature.