General description: The MultiPhoton Imager-49 is an ultra-low background gamma imager for low-activity 2D distributions ¹²⁵I or ¹³¹I gamma sources. Measurements are performed simultaneously in two modes: standard (faster), and enhanced (slower, but more sensitive).
Components: MPD Imager-49 includes a multi-element detector unit with a positioning table, a dedicated computer with mouse and keyboard, and a 15" color monitor.
Sample Size: Imaged area up to 20 x 20 cm.
Resolution: Better than 1 mm
Sensitivity: 0.3 dpm/pixel (60 zeptomole of ¹²⁵I) in standard mode, and 0.009 dpm/pixel (1.5 zeptomole of ¹²⁵I) in enhanced mode. Similar sensitivity has been achieved for ¹³¹I

Dynamic Range: From 3 attoCi up to at least 5 nCi per pixel: more than 6 orders of magnitude.

Linearity: Better than 5% across the full dynamic range.
Software: Imager 1.0 software running under Windows 3.1 for measurement. Imgview 1.0 software running under Windows 3.1 and Windows 95 for analysis and plotting the data. Biotraces 1.0 wavelet based data processing/image cleaning software, running under Windows 95.
Power Requirements: 110 V, 60 Hz, grounded outlet. Power consumption 300 W. A surge protector is recommended.

Environmental Requirements: Temperature: 15 to 40° C. Humidity: 10 to 95% non-condensing.

Weight: Detector unit: 40 kg, Computer in industrial-type case: 10 kg.
Dimensions: Detector unit: 24" x 30" x 21", Computer unit: 19" x 18" x 7".

Price: $50,000.00, including a one-year warranty and two-years of free software upgrade.