Table 2.

Critical cooling rates (CCR) for DMSO, ethylene glycol and PEG 200, measured as described in Section 2.4.

Cryoprotectant	Concentration (% w/w)	CCR (K/s)
DMSO	39	17.7
	37	35.8
	35	60
	33	123
	32	300
	29	574
	27	784
Ethylene Glycol	42	17.7
	38	35.8
	35	60
	31	123
	29	300
	25	784
PEG 200	44	17.7
	40	35.8
	38	60
	37	123
	33	300
	31	574
	29	784