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Manufacturing & Quality Control

Sealed Sample Management: Why the Approved Sample Is the Reference (2026)

Quick answer. The sealed approved sample is the reference a reorder is measured against, which is why it is held by both sides and kept with the order file rather than in a drawer. Without it, a claim about a delivery has nothing to be measured against, and the discussion becomes a comparison of recollections.

1. What the sealed sample is for

  • It is the reference for the reorder. The next shipment is measured against it rather than against a description.
  • It is the reference for the inspection. Which is what makes an inspection result meaningful rather than an opinion.
  • It settles a disagreement. Two parties remembering a specification differently is what the sealed sample exists to prevent.
  • It carries the approval. Both signatures and the date, so the version under discussion is unambiguous.

2. How many copies, and where they live

  • Production copy. Held at the site that runs the order, since it is what the line is measured against.
  • Buyer copy. Held with the order file, since it is the copy a claim depends on.
  • Third-party copy. Where an inspection agency is used, so the inspector measures against the same reference.
  • Where they live. With the order file rather than in a sample cupboard, because a reference nobody can find is not a reference.

3. What a sealed sample carries

  • The style and colourway. So the sample cannot be confused with a neighbouring order.
  • The measurement record. The approved measurements for the size set, attached rather than implied.
  • The dates. Production and approval, since the sample describes a point in time.
  • The approver. Whoever signed, since the approval is what gives the sample its authority.
  • Any noted deviation. Approved with the deviation written on it rather than silently included.

4. Storage and condition

  • Out of light. Colour is the first property a stored sample loses.
  • Dry. Humidity changes dimensions and can affect the finish.
  • Sealed. So the sample itself does not acquire handling marks that later look like production faults.
  • One sample per order. A sample that has been handled becomes a worse reference than a fresh one, which is a reason for holding more than one copy.

5. Which sample is which

  • A sales sample. For the discussion, not for the reference. It may be made on material that is not the production material.
  • A fit sample. For the block and the grade, before the construction is settled.
  • A pre-production sample. The production version, approved and then sealed. This is the one that becomes the reference.
  • A golden sample. Where a buyer keeps one deliberately untouched for the life of the style, separate from the working copies.

6. Common errors

  • Keeping the sample in a drawer. A reference nobody can locate does not settle anything.
  • Sealing it without the measurement record. The measurements are part of what was approved.
  • Approving without a signature or date. The version under discussion then becomes arguable.
  • Storing it in daylight. The colour moves, and colour is what a stored sample is used to check.
  • Having only one copy. An inspection and the buyer’s file both need one, and a single sample cannot be in two places.
  • Recording a deviation nowhere. An unrecorded deviation returns as a claim rather than as an agreement.

7. How to compare two suppliers

  • Who keeps a sealed copy. Both sides, and the buyer’s copy is the one a claim depends on.
  • Whether the measurements are attached. A sample without the approved measurements describes less.
  • Whether deviations are written on it. An approved deviation is an agreement; an unrecorded one is not.
  • How it is stored. Out of light and dry, since colour and dimension are what it is used to check.
  • Whether a golden sample is held. A deliberate untouched copy for the life of the style.

· Xiamen Unitex Trade Co., Ltd. — OEM & ODM underwear sourcing partner

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.
Supplier Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — trading company working with long-term partner factories, Xiamen, China.
Purpose The reference for the reorder, the inspection and any claim
Copies Production site · buyer (with the order file) · third-party inspector where used
Where it lives With the order file rather than in a sample cupboard
Carries 1 Style and colourway
Carries 2 The approved measurement record for the size set
Carries 3 Production and approval dates
Carries 4 The approver, since the approval is what gives it authority
Carries 5 Any noted deviation, written on the sample
Storage Out of light, dry and sealed
Why more than one copy A handled sample becomes a worse reference; inspection and file both need one
Sample types Sales sample (discussion) · fit sample (block) · pre-production sample (the reference) · golden sample (deliberately untouched)
Golden sample Kept for the life of the style, separate from the working copies

Buyer checklist

  • Seal the pre-production sample once approved, not the sales sample.
  • Keep a copy at the producing site and one with your order file.
  • Give the inspector a copy where an inspection is used.
  • Attach the approved measurement record to the sample.
  • Record the style, colourway, production date and approval date.
  • Note any approved deviation on the sample itself.
  • Store samples out of light and dry.
  • Keep a golden sample untouched where the style runs for several seasons.
  • Reference the sample in the purchase order.
  • Re-confirm against the sample at receipt rather than from memory.

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.)

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.

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Sources & references

  1. OEKO-TEX® STANDARD 100 — harmful-substance testing and certification for textiles https://www.oeko-tex.com/en/our-standards/oeko-tex-standard-100
  2. OEKO-TEX® Label Check — verify a certificate number at the issuing body https://www.oeko-tex.com/en/label-check/
  3. ISO 3758:2023 — Textiles: care labelling code using symbols https://www.iso.org/standard/74401.html
  4. ISO 2859-1 — sampling procedures for inspection by attributes https://www.iso.org/standard/73563.html
  5. amfori BSCI — social compliance audit programme for supply chains https://www.amfori.org/
  6. US Consumer Product Safety Commission — children's product requirements https://www.cpsc.gov/Business--Manufacturing/Business-Education/Business-Guidance/Childrens-Products
  7. US FTC — Clothing and Textiles: labelling and advertising guidance https://www.ftc.gov/business-guidance/industry/clothing-and-textiles
  8. EUR-Lex — EU legislation https://eur-lex.europa.eu/
  9. EU single market — product requirements https://single-market-economy.ec.europa.eu/
  10. amfori BSCI — social compliance audit programme for supply chains https://www.amfori.org/amfori-bsci

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.

Buyer Questions

MOQ, lead times, certification and trading terms

Because it is the reference a reorder and an inspection are measured against. A sample that has been handled acquires marks that later look like production faults, which makes it a worse reference than a fresh copy. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

At least the producing site and the buyer, with a third copy for the inspector where one is used. The buyer's copy is the one a claim depends on, which is why it belongs with the order file rather than in a sample cupboard. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

The style and colourway, the approved measurement record for the size set, the production and approval dates, the approver, and any deviation written on it. A sample without the measurements describes less than what was approved. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

Out of light and dry, and sealed. Colour is the first property a stored sample loses, and humidity changes dimensions — both are the properties the sample is used to check. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

A copy deliberately left untouched for the life of the style, kept separate from the working references. It is used when a style runs for several seasons and the working copies have been handled many times. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

No. A sales sample is for the discussion and may be made on material that is not the production material. The pre-production sample, once approved and sealed, is the one that becomes the reference. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).