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CHECK-IT™ Linearity standards from LTI offer an excellent, quick and affordable method of third party verification of gamma counter performance.

Many gamma counters suffer from a severe non-linearity problem. As the count rate increases beyond it's "dead time cutoff", counts become lost as the electronics can no longer keep up. Because of this, efficiency drops off and a "hook effect" can be observed. Being aware of the limitations of your gamma counter may allow you to take corrective action.

Even in gamma counters with automatic dead time correction, settings can change over time. detector crystals age and electronics drift in gain. If your gamma counter is getting older, it may make sense to start verifying the linearity of your counter, and the accuracy of it's data reduction algorithms.

• CHECK-IT™ Linearity Standards consist of a set of (5) I125 gamma sources trapped in resin, dried and sealed in 12 x 74 mm color coded test tubes.

• Each set also includes a log book complete with documentation: never have to worry about finding you documentation for regulatory agencies.

• Extensive pre-shipping quality control of materials and workmanship: assuring safety and  confidence in instrument performance.