X-ray inspection matrix test grids deliver comprehensive field-wide sensitivity validation in a single pass. Each grid contains 25 certified Grade 200 precision balls arranged in a visible matrix pattern across a rigid 100mm × 100mm panel, enabling simultaneous multi-point resolution verification across the full scanning area rather than single-point spot checks.
Configuration: 25 certified Grade 200 precision balls in a fixed 5×5 matrix pattern
Grid Dimensions: 1.5mm × 100.0mm × 100.0mm
Maximum Ball Diameter: 6.00mm
Contaminant Types: Stainless Steel, Glass, Ceramic (contact for additional options)
Compliance: Manufactured from FDA-compliant materials
Traceability: Color-coded; permanently imprinted with ball size, contaminant type, and unique CoC number
Documentation: Certificate of Compliance (CoC) included with every order
Order Type: Special order item — not eligible for returns; confirm specifications before ordering
Special Order Item: Matrix test grids are produced to your specified ball diameter and contaminant type and are not eligible for returns. Please verify all specifications with your X-ray system manufacturer or validation protocol before placing your order.
Frequently Asked Questions
X-Ray Matrix Test Grids — Field-Wide Sensitivity Validation
An X-ray matrix test grid is a flat calibration standard containing 25 certified Grade 200 precision balls arranged in a fixed 5×5 pattern within a rigid 100mm × 100mm × 1.5mm panel. When passed through or positioned under an X-ray inspection system, the grid simultaneously evaluates detection sensitivity at 25 distinct points across the full scanning field — providing far more rigorous coverage than a single-point test piece.
Matrix grids are available in stainless steel, glass, and ceramic contaminant types, with additional options available on inquiry. Because X-ray systems detect density differences rather than metallic conductivity, glass and ceramic are especially critical validation materials — covering contaminants that a metal detector cannot detect at all. Contact Test Standard Labs to confirm available contaminant types for your required ball size.
Grade 200 is an ABMA/ISO precision classification defining the dimensional and sphericity tolerances of each enclosed ball. Certification to Grade 200 ensures every test ball presents a consistent, repeatable X-ray signature, so baseline data is reliable and results are comparable across validation runs over time.
Each grid panel measures 100.0mm × 100.0mm with a thickness of 1.5mm. The rigid, flat form factor allows the grid to be placed directly on a conveyor belt, held stationary in the beam path, or positioned at a defined depth within a product simulation, depending on your validation protocol requirements.
The largest ball diameter available in the 100mm × 100mm matrix format is 6.00mm. This upper limit is set by the panel geometry — fitting 25 balls in a uniform 5×5 grid within 100mm × 100mm requires a maximum individual ball size of 6.00mm to maintain consistent spacing without overlap.
X-ray beam intensity is not perfectly uniform across the scanning field. Edge zones, corners, and areas near mechanical supports can exhibit lower sensitivity than the field center. A single-point test piece only confirms detection at one location. A matrix grid simultaneously challenges all 25 points, revealing sensitivity gradients and dead zones that a single test would miss entirely — making it the preferred standard for installation qualification (IQ) and operational qualification (OQ) protocols.
Yes. All matrix test grid materials are FDA-compliant, making them suitable for food processing, pharmaceutical manufacturing, and other regulated environments. This supports documentation requirements under FSMA, GMP, 21 CFR Part 211, HACCP, BRC Global Standard, SQF Code, and FSSC 22000 frameworks.
Each grid is color-coded by contaminant type and permanently imprinted with the ball diameter, contaminant designation, and a unique Certificate of Compliance (CoC) number. This CoC number links the physical standard directly to its documentation, allowing auditors to verify traceability during HACCP, BRC, SQF, or FSSC 22000 inspections without ambiguity.
Matrix grids are primarily designed for periodic qualification events — system installation, after maintenance, after any software or parameter change, and scheduled performance audits. For routine shift-start and shift-end production checks, most facilities use individual test pieces for speed. The matrix grid is deployed for deeper field-uniformity validation at defined intervals or when required by your quality program.
Each matrix grid is manufactured to a customer-specified ball diameter and contaminant type combination, with a unique CoC number issued at the time of production. Because the grid cannot be restocked for another customer, it is not eligible for returns. Please confirm your required ball size and contaminant material with your X-ray system OEM documentation or validation SOP before ordering.
Need help selecting the right matrix grid size or contaminant type for your X-ray system?
