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. 2012 Sep 6;13(5):262–268. doi: 10.1120/jacmp.v13i5.3758

Table 1.

Specifications of the ionization chambers.

Chamber Type Manufacturer/Model Number Sensitive Volume (cc) Ion Collection Time (μs) Nominal Response (nC/Gy) Waterproof
Farmer PTW 30013 0.6 140 0.2 Yes
PinPoint PTW 31006 0.015 20 0.4 Yes
Parallel‐plate PTW 23342 0.02 30 1 No