Well Counter Type 43-Thermo Scientific

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Well Counter Type 43

	The Type 43 Well Detectors are the most sensitive gamma counter designs available, providing high quality data and minimizing counting time.

Product Detail

	Well Counter Type 43 This detector is similar in construction to the scintillation probes types 41 and 42 as used in our portable contamination meters. The integral lead shield provides adequate shielding for RIA determinations so in conjunction with the Mini-Assay type 6-20 the combination becomes a transportable gamma counter. Disposable plastic liners are available for the well. Please note - The last day to purchase a Well Counter Type 43 is January 1, 2009. Support will be available for this product until January 1, 2010.

Purchase Details

SKU : Well Counter 43

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Specifications:

Crystal :

25 mm diameter x 25 mm long sodium iodide, with well 16 mm diameter and 20 mm deep

Photomultiplier :

25 mm cathode, type 9924 or similar

Screening :

Integral lead shield 4.25 mm wall

Background :

2-10 cps depending upon locale

Maximum Random Counting Rate :

5,000 cps for approximately 1% counting loss

Output :

Negative pulse not exceeding 500 mV amplitude into 3,000 Ohms load

Pulse Length :

Approximately 2 microseconds

Dynode Chain Resistance :

68.5 megohms

Well Counter Sensitivity in Percentage Counts per Disintegration :

¹²⁵I 75%
¹³¹I 12%
⁵⁷CO 37%
⁷⁵Se 24%
⁹⁹mTc 34%

Weight :

0.63 kg

Additional Lead Shield :

Nominal wall thickness 11 mm

Size :

120 mm high x 65 mm diameter

Weight :

2.5 kg