LB 2111 Multi Crystal Gamma Counter

Well-type detectors optimized for best counting efficiency

The Multi Crystal uses high-performance NaI well-type detectors that minimize variance effects caused by sample volume and position to guarantee best counting efficiencies. The crystals cover an energy range from 10 to 510 KeV suitable to detect e.g. ¹²⁵I, ⁵⁷Co, ¹³¹I, ⁵¹CR, ⁷⁵Se or ⁹⁹TC. A 6 mm lead shield surrounds each detector, providing 12 mm lead shielding between detectors to decrease interferences such as crosstalk between samples or background radiation.

Safe and reliable measurement

The sample rack concept of the Gamma Counter prevents contamination entering the instrument, e.g. via tubes contaminated on the outside. The tubes are placed in racks for signal measurement which can be cleaned and decontaminated easily. And, to satisfy quality management requirements, both the stand-alone version of the software as well as MikroWin support QM functions, including efficiency, absolute & relative background, relative detector efficiency and high voltage adjustment. In order to facilitate instrument QC, single-tube or 12-tube ¹²⁵I or ⁵⁷Co sources of 2 KBq/tube are available.

Convenient software options and LIMS connectivity

Several software options are available for measurement and data analysis:

• The system can work in stand-alone mode, no computer needed. Just attach a keyboard, screen and printer directly to the gamma counter, and start measuring.
• LBIS provides a Windows-based intuitive graphical user interface delivering straightforward instrument control and data analysis, and makes it easy to get started and get going. LBIS supports a wide variety of applications, such as competitive (RIA) and immunometric (IRMA) assays with superior curve fitting algorithms. Convenient import/export functionality enables to upload patient information and to download result.
• The MikroWin software is a complete solution providing instrument control, data collection, analysis and reporting. MikroWin enables evaluation of any kind of screening assays using controls, classifications and calculation groups. Sophisticated curve fitting routines (linear or nonlinear) enable sample quantification and reliable results even at low concentrations. The Advance version of the software provides 21 CFR Part 11 compliance and additional QC features, such as configurable user hierarchies, audit trail with automated Log-file generation, automated file-name generation, control history for validation, and assay LOT-No. Verification.