Product	Detector Type	Active Window Area	Efficiency

Model 43-1-1	ZnS(Ag) + Plastic Scintillator	83 cm² (12.9 in²)	²³⁹Pu : 30% ⁹⁰Sr/⁹⁰Y : 30% ¹⁴C : 4%
Model 43-2-2	ZnS(Ag) + Plastic Scintillator	9.7 cm² (1.5 in²)	²³⁹Pu : 25% ⁹⁰Sr/⁹⁰Y : 20% ¹⁴C : 5%
Model 43-65-2	ZnS(Ag) + Plastic Scintillator	63 cm² (9.8 in²)	²³⁰Th : 20% ²³⁹Pu : 20% ⁹⁹Tc : 15% ⁹⁰Sr/⁹⁰Y : 20% ¹⁴C : 1%
Model 43-89	ZnS(Ag) + Plastic Scintillator	125 cm² (19.4 in²)	²³⁹Pu : 20% ⁹⁹Tc : 10% ⁹⁰Sr/⁹⁰Y : 20%
Model 43-93	ZnS(Ag) + Plastic Scintillator	100 cm² (15.5 in²)	²³⁹Pu : 20% ⁹⁹Tc : 15% ⁹⁰Sr/⁹⁰Y : 20%
Model 43-147	ZnS(Ag) + Plastic Scintillator	200 cm² (31.0 in²)	²³⁹Pu : 20% ⁹⁹Tc : 13% ⁹⁰Sr/⁹⁰Y : 20%
Model 43-68	Rechargable Gas Proportional	126 cm² (19.5 in²)	²³⁹Pu : 20% ¹⁴C : 15% ⁹⁹Tc : 30% ⁹⁰Sr/⁹⁰Y : 20% Gamma : 1%
Model 43-135-1	Gas Proportional For Large-Area Source Calibration	500 cm² (77.4 in²) Windowless	²³⁹Pu : 42% ²³⁰Th : 33% ⁹⁹Tc : 55% ⁶³Ni : 37% ⁹⁰Sr/⁹⁰Y : 55%
Model 43-143-1	Gas Proportional	100 cm² (15.5 in²)	²³⁹Pu : 20% ¹⁴C : 15% ⁹⁹Tc : 30% ⁹⁰Sr/⁹⁰Y : 20% Gamma : 1%