SPINSCAN XDS
Datasheet
SPINSCAN XDS is a benchtop Electron Paramagnetic Resonance (EPR/ESR) spectrometer designed for accurate absorbed radiation dose measurement using alanine dosimeters. The system analyzes irradiated alanine samples, measures their EPR response, and converts the results into absorbed dose values using dedicated calibration software. It provides a practical solution for routine dose verification, quality assurance, and reference dosimetry.
Developed for medical device sterilization, industrial irradiation, dosimetry laboratories, and radiation research, SPINSCAN XDS supports both low- and high-dose measurement applications. Its non-destructive measurement technology allows irradiated dosimeters to be analyzed repeatedly, helping facilities verify processing conditions, investigate results, and maintain consistent radiation dose control.
Manual or Automated — Built Around Your Workflow
SPINSCAN XDS can be supplied in two configurations based on the same EPR spectrometer and dosimetry software. In the manual configuration, an operator loads individual alanine dosimeters into a precision holder for measurement. For laboratories processing larger batches, the automated configuration includes an optional 50- or 100-pellet autosampler that handles sequential measurements with reduced operator involvement.
Both configurations provide the same fundamental EPR measurement capabilities, allowing facilities to select the most suitable approach based on daily dosimeter volume, laboratory procedures, and operational requirements.
Key Advantages
- Accurate absorbed dose evaluation using established alanine EPR dosimetry technology
- Manual and automated configurations for individual measurements or larger sample batches
- Non-destructive analysis allowing repeated readout of irradiated dosimeters
- Integrated calibration and verification for consistent measurement procedures
- Dedicated dosimetry software for dose calculation, measurement records, and data management
- Compact benchtop design for industrial quality control and laboratory applications
SPINSCAN XDS combines EPR spectroscopy, precision sample positioning, and specialized software in a single dosimetry platform. Learn more about the complete system and available configurations at Alanine Dosimeter.
How Alanine EPR Dosimetry Works
When alanine dosimeters are exposed to ionizing radiation, stable free radicals are generated within the material. SPINSCAN XDS detects these radiation-induced paramagnetic centers by recording their characteristic EPR spectrum. The measured signal is evaluated against a calibration curve to determine the absorbed radiation dose.
Unlike methods that consume or alter the dosimeter during readout, EPR measurement is non-destructive. This allows the same dosimeter to be measured again when additional verification is required, subject to appropriate storage and measurement conditions. The method supports dosimetry for gamma irradiation, electron beam processing, and X-ray irradiation.
Two Configurations, One Measurement Platform
Manual Alanine Dosimetry. Individual dosimeters are inserted into dedicated holders and measured using the SPINSCAN XDS spectrometer. This configuration is suitable for laboratories performing routine quality control, calibration, research, and lower-volume measurements. Operators retain direct control over sample loading while benefiting from software-assisted spectrum acquisition and absorbed dose calculation.
Automated Alanine Dosimetry. An optional autosampler with 50 or 100 pellet positions enables sequential sample handling and measurement. This reduces repetitive manual loading and is particularly useful for industrial irradiation facilities, larger quality assurance laboratories, and dose mapping campaigns involving multiple dosimeters.
Both configurations use the same core EPR technology and calibration approach. The choice primarily depends on the required measurement throughput and preferred level of automation.
Measurement Performance & Reliability
SPINSCAN XDS combines sensitive EPR signal detection with precision dosimeter positioning and dedicated calibration procedures. Automatic gain adjustment, ruby reference-based instrument verification, and temperature and humidity compensation capabilities help support stable and reproducible measurements.
| Published absorbed dose range | 1 Gy – 200 kGy* |
| Repeatability / reproducibility | Less than 1% under specified conditions |
| Optimized measurement time | 10–200 seconds |
| Dosimeter formats | Alanine pellets and tape tabs with appropriate holders |
| Automated sample capacity | 50 or 100 pellets (optional) |
*The published measurement range and performance figures are application-dependent. Achievable performance is determined by the selected dosimeters, calibration range, measurement parameters, and operating conditions.
Dedicated Dosimetry Software
SPINSCAN XDS uses e-Spinoza software with dedicated alanine dosimetry functions, combining EPR spectrum acquisition and analysis with calibration management, absorbed dose evaluation, and organized measurement records.
- Automated measurement procedures and EPR spectrum acquisition
- Calibration curve creation, selection, and verification
- Absorbed dose calculation and dose mapping support
- Dosimeter batch identification and measurement database management
- Recording of irradiation conditions and sample information
- Audit trail inspection and data export
- Support for optional analytical balance, barcode reader, and autosampler
These functions help laboratories establish consistent measurement procedures, simplify routine analysis, and maintain organized dosimetry records for quality assurance and subsequent review.
From Irradiated Sample to Dose Result
1. Sample preparation. The irradiated alanine dosimeter is identified and associated with the relevant batch, calibration, and irradiation information.
2. Sample loading. The dosimeter is positioned in the EPR spectrometer using a dedicated holder or processed sequentially through the optional autosampler.
3. EPR measurement. SPINSCAN XDS records the radiation-induced EPR signal under the selected acquisition conditions.
4. Dose evaluation. The software processes the measured signal and calculates the absorbed dose using the selected calibration curve.
5. Results management. Measurement information is stored in the dosimetry database for review, verification, and export.
Applications & Industries
SPINSCAN XDS is designed for organizations that need dependable radiation dose measurements for process control, calibration, and scientific investigation.
- Medical device sterilization — absorbed dose verification for irradiation process validation and routine quality assurance
- Food irradiation — dose monitoring and verification of treatment conditions
- Industrial radiation processing — dosimetry for polymer cross-linking, material modification, and other irradiation applications
- Dosimetry and calibration laboratories — calibration curve development, reference measurements, and comparative analysis
- Radiation research — quantitative EPR measurements and investigation of radiation-induced effects
Whether used as a standalone laboratory instrument or as part of an industrial quality assurance workflow, SPINSCAN XDS provides a flexible approach to alanine EPR dosimetry, combining controlled measurement procedures with practical software tools and optional automation.
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Designed for Precision Dosimetry
- Manual and automated alanine dosimetry configurations
- Optional 50- or 100-pellet autosampler
- Non-destructive EPR measurement and repeatable readout
- Wide absorbed dose measurement range
- Suitable for gamma, electron beam, and X-ray irradiation
- Integrated calibration, dose calculation, and data management
- Compact benchtop design for laboratory and industrial use
Key features
Manual & Automated Dosimetry
SPINSCAN XDS supports individual dosimeter measurements or automated batch processing with an optional 50- or 100-pellet Autosampler. Automatic sample delivery, precise positioning, and collection after measurement reduce repetitive manual operations and improve laboratory efficiency.
Stable, Non-Destructive EPR Readout
EPR spectroscopy measures radiation-induced free radicals in alanine without consuming the dosimeter. The stable signal enables repeated measurements and subsequent verification, supporting quality control, result investigation, and long-term sample retention under appropriate conditions.
Versatile Radiation Dose Measurement
SPINSCAN XDS supports alanine dosimetry for gamma, electron beam, and X-ray irradiation processes. Its broad measurement capabilities make it suitable for medical device sterilization, industrial radiation processing, dose mapping, and scientific research.
Integrated Calibration & Dose Evaluation
Dedicated dosimetry software supports calibration curve creation, verification, and absorbed dose calculation. Integrated measurement records, database functions, and data export help laboratories standardize procedures and manage dosimetry results efficiently.
High-Precision EPR Dosimetry
With a published absorbed dose range of 1 Gy to 200 kGy, SPINSCAN XDS combines precision sample positioning, ruby reference verification, automatic gain adjustment, and environmental compensation to support reproducible measurements with repeatability below 1% under specified conditions.
Compact & Efficient Laboratory System
The compact benchtop design combines EPR measurement technology with dedicated software and flexible sample handling. Optimized measurement protocols of 10–200 seconds and optional automation support efficient operation in research laboratories and industrial quality control environments.
Video
Accessories
Automatic sample changer for alanine pellets
There are 3 types to Automatic Temperature Control Systems for any possible purpose:
— TCS-01L (-170C° -+200C°)
— TCS-01B (-RT -+70C°)
— TCS-01H (+50C° -+550C°)
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