Illustrative situation
A brand has had a disagreement with a supplier over whether a batch of T-shirts was acceptable. There was no written standard, so each side relied on its own view of what was normal. The buyer decides to put a quality agreement in place for the next order.
Main answer
A short quality agreement names the specification and the approved sample, the measurement tolerances, the inspection method and sample size, the defect classes and limits, any test requirements, and the remedy if goods fail. Agree it before the deposit, so that acceptance is judged against a standard both sides signed.
Keep it short and specific
One or two pages is enough if it is precise. Refer to the approved pre-production sample, the tech pack version and the label and packing instructions. A long document that nobody reads is less useful than a short one that both sides follow. Name a contact on each side for quality decisions.
Define what is measured and how
State measurement points and tolerances for each size. State the colour approval method and light source, and shrinkage or wash-test requirements if relevant. If tests are needed, name the test method and the laboratory or type of laboratory, and who pays. Where a standard is used, cite it by number and edition so there is no confusion.
Inspection and defect classes
Many buyers use attribute sampling with an acceptance quality limit. ISO 2859-1 describes sampling schemes indexed by acceptance quality limit, for lot-by-lot inspection, and its acceptance quality limit is the level considered acceptable on average, not permission to knowingly ship defects. Agree defect classes, such as critical, major and minor, with examples and the limit for each, and say who inspects and when.
A short outline you can adapt
A workable outline has seven headings: product and approved sample reference; measurement and tolerance table; colour and finish approval; test requirements and who pays; inspection method, sample size and defect classes; remedy and timing for failed goods; and contacts and escalation. Under each, write one or two lines. Have both sides sign and date it, and attach it to the order so it travels with the goods. Review it after the first order and adjust where it proved unclear.
Related reading
See the mens briefs manufacturer page for the products behind this topic, and read aql sampling next. Both are general guides, not a quotation.
Remedy and timing
Say what happens if the lot fails: rework, sorting, replacement, or a price adjustment, who bears the cost, and how long each takes. State the claim period after delivery and what evidence is needed. Link payment of the balance to a passed pre-shipment inspection. Keep a signed copy with the order.
Fact, recommendation, uncertainty
- Established fact
- ISO 2859-1 provides sampling schemes indexed by acceptance quality limit for lot-by-lot inspection, and the limit is not a licence to ship known defects.
- Recommendation
- Put spec, tolerances, inspection method, defect classes, remedies and timing in a short signed agreement before the deposit.
- Uncertainty
- Suitable tolerances and limits depend on the product and market, and need to be agreed between the parties.
Sources and further reading
Sources checked on 24 October 2026. Standards bodies sell the full texts; we cite what their public pages state. General information, not legal or technical certification advice.
More perspectives from the team
Three further views on the same question, each by function. They add conditions and limits to the main answer; they are editorial notes, not customer reviews.
Sino Finetex Editorial Team Sourcing
Ask each supplier to review and sign the same agreement, and note any changes they ask for, since those show where they see risk. Limit: a supplier who will not sign any standard is leaving you without recourse. Attach the agreement to the proforma invoice so payment and quality terms are read together.
Sino Finetex Editorial Team Product selection
Set stricter limits on features that matter most to the customer, such as visible stitching, and looser on hidden areas. Limit: too many strict points can make inspection slow and costly. Mark which defects would make the garment unsellable in your channel, as that sets the real strictness you need.
Sino Finetex Editorial Team Quality & care
Include examples or photos of acceptable and unacceptable defects, which reduces disputes more than words alone. Limit: examples must be kept up to date as the product changes. Agree who may reject a lot and within how many days of delivery, to avoid arguments about timing.
Related products
- Custom Briefs Manufacturer
Sino Finetex product page
- Compression Underwear Manufacturer
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- Products
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