CRC-55tW Dose Calibrator/Well Counter

Request a Quote
CRC-55tW Dose Calibrator/Well Counter

Item # 5130-2216

As a combination of the CRC-55tR Dose Calibrator and Well Counter, the CRC55tW dose calibrators provide advanced features with the speed and accuracy you need to measure activity and prepare doses. Its ion chamber is one of the time-tested, high pressure well designs by Capintec capable of measuring a dose as high as 6 Ci (250 GBq) with high accuracy. The CRC-55tW calibrator features a new helpful chamber plug-and-play capability.

For wipe testing, the CRC-55tW calibrator allows the user to define specific counting procedures (protocols) with trigger levels for work, patient, unrestricted areas and sealed source leak tests. The CRC-55tW unit also performs counting functions for wipe tests in as little as six seconds at activities as low as 1 nCi. Low activities are measured with a drilled well high sensitivity Sodium Iodide (NaI) detector.

The well counter includes a 256 channel MCA which provides detailed spectrum for identification and analysis. Manual and automatic ROI selection are available.

The chamber and counter of the CRC-55tW calibrator are combined in a menu driven, touch screen interface that is easy to learn and use.

Reports software, archives well counter data for quality assurance procedures, wipe measurements, and laboratory tests. Well counter reports are stored and searchable by date range for later viewing or printing. Wipe tests are searchable by date range, wipe type, and activity.

Ionization Chamber

    • Fill Gas: 12 atm Ultra-Pure Argon
    • Measurement: Auto ranging
    • Activity Range: Up to 6 Ci (250 GBq)
    • Resolution: .001 MBq (.01 µCi)
    • Response Time: Within 2 sec, for low activity sample, 4 to 16 sec
    • Tests: Daily tests include Auto Zero, Background Adjustment, Voltage
    • Test, Data Check, Accuracy and Constancy
    • Enhanced QC includes linearity, geometry, strip QC

Well Counter

    • Type: Sodium Iodide (NaI) drilled-well crystal detector
    • 256 Channel MCA, manual and automatic ROI
    • Warning Trigger Levels: User-definable
    • Tests: Daily test, energy calibration, and reproducibility
    • Enhanced QC includes Chi-Square and MDA
CRC-55t start-up
CRC-55t measurement screen


  • Tests: Daily tests include Auto Zero, Background Adjustment, Voltage Test, Data Check, Accuracy and Constancy; Enhanced QC includes linearity, geometry, strip QC
  • Display Screen: Type: 8 in. VGA LCD color touch screen display; Bq/Ci Reading: User selectable or fixed; Activity Display: Selected radionuclide, calibration number, measured activity and display units (Bq/Ci); Count Rate Values: Wipe and lab test results
  • Electrometer Accuracy: Better than ± 2%; Linearity: Within ± 2%
  • Repeatability of Measurement: Within ± 1% within 24 hours during which time the calibrator is continuously in operation
  • Nuclide Data: 28 programmable keys; System Memory: Over 80 nuclides (cal number and half-life); A pre-set key measures up to 2.0 Ci (74.0 GBq) of F-18
  • Standard Source Data: System Memory: Co-57, Co-60, Ba-133, Cs-137
  • Molybdenum-99 Assay: Methods: CAP-MAC canisters; Measured Values: Mo-99 elution, Tc-99m, Tc-99m/Mo-99 ratio
  • PC Port Interface: RS-232 and USB; Compatibility: Standard Nuclear Medicine Management Systems; Ethernet interface
  • Printer: RS-232 and USB Ports; Epson Roll, Epson Slip or Okidata dot matrix
  • Power Requirements: 100-240 V ac (50/60 Hz) 100 MA
  • Tests Diagnostics: Full test of program, system memories

Item Measurements


  • 9.5″ h x 9.0″ w x 10.5″ d (42 x 23 x 27 cm)
  • 7.5 lb. (3.4 kg)

Ionization Chamber

  • 17.25″ h x 6.76″ d (43.8 x 17.2 cm)
  • 30 lbs. (13.6 kg)
  • Well Diameter: 2.4″ (6.1 cm)
  • Well Depth: 10.0″ (25.4 cm)
  • Cable Length: 12′ (3.7 m)  – Longer cables are available

Well Counter

  • 9.38″ h x 6″ dia. (23.8 x 15.2 cm)
  • 15.2 lb. (6.9 kg)
  • Well Diameter: 0.67″ (1.7 cm)
  • Well Depth: 1.5″ (3.8 cm)
  • Cable Length: 9 ft (2.7 m) – Longer cables are available


Item #Description
7300-2004Chamber Well Insert
7300-2005Vial/Syringe Dipper
5130-0006Molly Assay Canister
5130-2046CAP-MAC®-S Molly Assay Canister for Syringes
7120-1199CRP-200 Dose Tickets & Labels
5430-0058Epson Roll Printer
5430-0100Epson Ticket Printer
7300-2450Environmental Shield