Product	Detector Type	Active Window Area	Max. Sample Size	Efficiency	Features

Model 3101					Tritium in Air Monitor
Model 3100					Tritium in Air Monitor
Model 44-110	Windowless Gas Flow Proportional For Tritium/Beta Detection	126 cm² (19.5 in²)		³H : 25%	Windowless Gas Flow Proportional Detector Active Window Area: 126 cm² (19.5 in²) ³H Efficiency: 25%
Model 44-110-4	Alpha-Beta Windowless Gas Flow Proportional		5.1 x 0.9 cm (2.0 x 0.4 in.) [D x L]	³H : 3% ¹⁴C : 21% ⁶³Ni : 36% ²³⁹Pu : 42%	Windowless Gas Flow Proportional Sample Counter Head Max. Sample Size: 5.1 x 0.9 cm (2.0 x 0.4 in.) [D x L]

Tritium Monitoring