Standards

Fabric Tolerance and Incoming Material Review

Specify fabric identity, weight and width measurement bases, visual criteria and lot traceability before comparing incoming material with an approved reference.

Use this guide to define the review conditions and the record required for your project. Acceptance limits must be agreed for the identified material and product; a method description is not a test result.

KnitCertain | Updated October 18, 2026

Scope and applicability

Use the material specification and its version to define what is being purchased and reviewed. Supplier brochures can describe candidate materials, but a shared model name does not resolve differences in composition, finish, nominal weight or measurement state. Confirm those differences before assigning one specification to a project.

Acceptance criteria to agree

Confirm these items in the project specification before making a pass or fail decision. This guide does not set a universal acceptance limit.

Project agreement checklist
ItemSpecify before review
Material identitySupplier reference, construction, composition basis, finish, color and lot.
Fabric weightUnits, preparation and measurement method, nominal target and agreed tolerance.
WidthWhether the value means total or usable width, measurement state and allowable variation.
Visual gradingInspection method, defect definitions, scoring option if used, inspected scope and acceptance rule.
Other required characteristicsProject-specific dimensional change, color, hand feel or performance requirements and their evidence.

Review method and record

  1. Match delivery labels and material references to the current specification and approved swatch. Resolve identity differences before using the material.
  2. Record the rolls or lots included in the review. Make the inspection scope explicit rather than implying that a partial check covered every roll.
  3. Measure the agreed characteristics under the specified conditions. Keep individual readings and the stated units.
  4. Locate and describe visual findings so they can be traced to the relevant roll or inspected area. Apply the agreed grading convention consistently.
  5. Compare the results with the approved requirements and record the decision for the identified material. Segregate unresolved material decisions from approved material records.

Common failure modes and prevention

Risk checks
Failure modePreventive review
Weight figures compared across different statesConfirm whether each value refers to the same finish and preparation basis.
Total width confused with cutting widthState the usable width requirement explicitly.
Similar model references treated as interchangeableVerify the exact material version and supporting record before substitution.

Evidence that supports the decision

An incoming-material record should connect the specification, supplier reference, lot or roll identity, inspection scope, measurements, defect observations and disposition. A composition result does not, by itself, prove weight, width, dimensional stability or performance.

Match the record to the material, sample or lot under discussion. See how to evaluate supporting evidence.

Method references

ASTM D5430 describes visual inspection and grading of fabrics. Its public scope notes the importance of using the same point-assignment option when comparing results. ASTM D5430-26.

The links provide public scope information. Follow the complete agreed method and edition when performing a test; this page does not reproduce a standard or claim a completed test.

Buyer questions

Can a brochure weight be used as the production tolerance?

A nominal brochure value is a candidate specification. Confirm the actual measurement basis, target and acceptable variation in the project agreement.

Does a visual grading system cover every fabric property?

No. Visual grading addresses visible findings under its defined method. Other required characteristics need their own measurements or tests.

Discuss your project requirements

Send the information below to make the review specific to your product.

  • Product, material and specification version.
  • The reference or method and acceptance criteria you need.
  • Sample or lot identity and the decision to be made.