1. Haskel Europe Limited, North Hylton Road, Sunderland, SR5 3JD, United Kingdom
2. Department of Engineering, School of Computing, Engineering and Digital Technologies, Teesside University, Middlesbrough, TS1 3BA, U.K.
3. Aura Innovation Centre, University of Hull, Bridgehead Business Park, Hessle, HU13 0GD, United Kingdom
4. Parker Hannifin Manufacturing, Gas Separation & Filtration Division, Dukesway, Gateshead NE11 0PZ, United Kingdom