Mini 900 Scintillation Monitors

Thermo Scientific™ Mini 900 Scintillation Monitor serves as a portable or benchtop style radiation counter.

A variety of different probes to accommodate most radiation detection needs.


Product Sheet

Product Description

Feature a large logarithmically scaled meter with an open scale at the lower end to show background levels of radiation while displaying high levels without switching

    • Several configurations available
    • Built-in speaker provides audible feedback of the radiation intensity
    • An alarm can be set to tripat any level on the scale
    • Battery or line powered
    • Packaged in a durable, lightweight aluminum case&bulletc1_end;Type R:
      • Monitoring High Level Dose Rates A monitor scaled over the range 0.5 to 5000μSv h-1 (0.05 to 500mR/h)
      • G-M tube is compensated to give a useful response from 45 keV to 1.5MeV and above
      • Not recommended for monitoring X-radiation from apparatus operating below 75kVp

      Type G:

      • Monitoring for Low Environmental Dose Rates Highly sensitive performance
      • Scaled over the range 0.05 to 75μSv h-1 (0.005 to 7.5mR/h)
      • Useful energy range: 55 keV to 1.5MeV and above
      • Not suitable for monitoring X-radiation

      Type D:

      • Uses partially compensated G-M tube to obtain an extended low energy response
      • Scaled over the range of 0.5 to 1000μSvh-1 (0.05 to 100 mR/h)
      • Useful energy range: 30 keV to 1.5MeV but response is maintained down to at least 17 keV
      • Suitable for measuring radiation from X-ray apparatus operating at or above 45kVp

      Type X:

      • Scaled 0.5 to 2000 counts per second Uses an end window G-M tube without energy compensation
      • Sensitive to radiation down to 10keV Useful for locating X-ray leakage from a variety of systems including high voltage equipment
      • Not intended for measurement but as a relative check device

Type 41:

      • Sodium iodide crystal (19mm dia. × 25mm thick)
      • Suitable for energies from 25 keV upwards
      • A lead cylinder surrounds the crystal gives the probe directional properties as well as reducing background
      • Diameter: 41mm
      • Length: 220mm

Type 41S:

      • Cylinder without lead shielding and with a larger sodium iodide crystal (25mm dia. × 38mm thick) for increased sensitivity
      • Suitable for energies from 25 keV upwards The probe is essentially omni-directional for medium and high energy gamma radiation
      • Diameter: 38mm
      • Length: 217mm

Type 42A:

      • Sodium iodide crystal 23mm dia. × 1mm thick with a 14mg cm2 aluminum window
      • Probe has a higher sensitivity than the Type 41 for gamma energies below 60 keV to a minimum of 10-15 keV
      • An integral lead collimator makes it particularly useful for 125I thyroid monitoring and deep vein thrombosis location
      • Diameter: 40mm
      • Length: 187mm

Type 42B:

      • This probe is the beryllium window version of the type 42 and detects very low gamma energies down to 5keV
      • The response above 15 keV is almost identical to the 42A

Type 44A:

      • The sodium iodide crystal (32 × 2.5mm thick) is mounted on the front surface of the probe to facilitate monitoring of large contaminated areas Suitable for a range of energies from approximately 15 keV to 250 keV Beta sensitive for energies above 500 keV
      • Diameter: 50mm
      • Length: 180mm
      • Aluminum window weight: 14mg/cm2

Type 44B:

      • This probe is the beryllium window version of the above and extends the sensitivity down to approximately 5keV, making it useful for 55Fe
      • 3.7kBq (0.1μCi) of 55Fe at 10mm yields approximately 180 counts s-1
      • Window weight: 47mg/cm2


Each unit comes with a comprehensive manual containing tables and curves of response to different radiations and other useful information

Recommended for:

The 900 Series of radiation counters are well established in teaching, research, hospital and industrial laboratories

Price: 0,00 SEK

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