Cryoprobe capacity can be compared using the weight of ice formed by freezing the surface of distilled water at 37 C. The effect of increasing the area of contact while still maintaining a constant tip temperature is illustrated. The thermal characteristics of the contact plate alter the amount of water or tissue frozen.
Amoils SP. Freezing Capacity of a Cryoprobe. Arch Ophthalmol. 1968;80(3):301-302. doi:10.1001/archopht.1968.00980050303001