Table 1.

Power and weight requirements. A nano-ESI-DMS system operates at atmospheric pressure with a diaphragm micropump weighing 20 g providing flow of 300 ccm. Vacuum pumps and complex electronics increase the power and weight of MS systems. Resolutions listed for MS systems are approximate and do not include any chromatographic resolution. Sources (Griffin: http://gs.flir.com/griffin-400, Torion : http://www.torion.com/products/24, Cooks /Purdue: Sokol et al. (Sokol et al. 2008; Sokol et al. 2011)).

Instrument	Commercial production	Weight	Power	Battery option	Resolution	Type	Sample intro
Griffin 400/460 MS	Yes	37–45 kg	400–600	yes	~400	trap MS, GC-MS	GC
Torion TRIDION 9 MS	Yes	15 kg	60–120	yes	~400	trap MS, GC-MS	SPME, needle trap
Mini 10.5 MS (Cooks, Purdue)	No	10 kg	50 W	yes	~300	Ion trap	membrane, sorbent, D-API
ESI-DMS	No	1 kg	< 10 W	yes	~40	DMS	nanospray to reaction chamber