Ludlum Model 44-21 Beta-Gamma DetectorIndicated Use Beta; Low energy gamma detection Detector Type NaI(Tl) scintillator, 2. 54 cm (1 in) dia. x 0. 1 cm (0. 04 in) thick, adhered to plastic scintillator, 0. 03 cm (0. 01 in) thick Window 3. 4 mg cm2 Window Area Active: 5. 1 cm2 (0. 8 in2) Open: 5. 1 cm2 (0. 8 in2) Efficiency (4) 14C: 4% 32P: 28% 125I: 38% 129I: 19% Typical Background (10 R hr field) 450 cpm Non Uniformity < 10% Photomultiplier Tube 3. 8 cm (1. 5 in) diameter Operating

let us know which ones you want

Please note that the battery percentage indicator is not functioning correctly which is why the unit is discounted

it automatically sets the high voltage and

We will shrink wrap and band to a pallet for free

They are probably all the same

and 2 seconds on the x100

BUILT-IN SPEAKER

10 minutes or CONT (continuous) for manual timing

cm (in) (PHYSICAL CHARACTERISTICS) 7

non-condensing

•Simplified Operation

μSv/hr mSv/hr