GR-200A and GR-200 series TLD detector chips are passive thermoluminescent detectors used in badge holders, ring dosimeters, wrist dosimeters, laboratory quality-control procedures and environmental monitoring applications. The correct configuration depends on the reader model, detector material, chip dimensions, sensitivity requirement and batch acceptance criteria.

Typical applications
- Whole-body personal dosimetry badges
- Ring and wrist extremity dosimeters
- Environmental monitoring
- Special-field dosimetry projects
- Batch acceptance testing and laboratory QA
Available detector options
Common detector material options include LiF(Mg,Cu,P) and LiF(Mg,Ti), depending on application and supplier confirmation. The GR-200 series can be discussed in round chip, square chip, film, rod and powder formats. Custom dimensions may be available for specific laboratory workflows.
Product-sheet specifications
- Common chip size: phi 4.5 x 0.80 mm; custom sizes available
- Radiation: X / gamma
- Linear range: 100 nGy - 12 Gy
- Detection threshold: 0.1 uGy
- Repeatability: < 2%
- Batch non-uniformity: <= 5%
- Dispersion options: 1%, 2%, 3% and 5%, depending on batch requirements
Configuration note: Product suitability should be confirmed against the intended TLD reader, holder or badge design, readout workflow and calibration procedure before routine use.
Information needed for quotation
- Detector material required: LiF(Mg,Cu,P), LiF(Mg,Ti) or another material
- Chip dimensions and detector format
- Uniformity or dispersion requirement
- Existing TLD reader model and manufacturer
- Whether chips will be used in badges, rings, cards, wrist dosimeters or loose laboratory testing
- Quantity, certificates, batch QC reports and delivery country
Related articles
- How to choose TLD elements for radiation monitoring
- A practical acceptance test for a new batch of TLD elements
- What information should you provide before requesting a TLD quotation?
Request a quotation: email sales@rgodosimetry.com with your reader model, chip dimensions, detector material, quantity and delivery country.