Printed 250gsm mink polyester throw fabric being inspected beside colour swatches and chemical test reports in a textile QC lab

Start the RFQ with article definition, article-contact scope and contractual wording

For a 250gsm printed mink polyester throw azo screening request, lock the article definition before discussing reports. Mink-style polyester throws are commonly warp-knit or raschel plush with a sheared face, usually around 240-280gsm finished weight, typically 100% polyester, with one-side print on a white or pale ground. Common retail sizes are 127x152cm, 130x160cm and 150x200cm. Reasonable finished size tolerance is often ±2cm to ±3cm. GSM tolerance is commonly controlled around ±5% where freight, pack-out or retailer spec is weight-sensitive.

Be accurate on legal scope. REACH Annex XVII Entry 43 restricts azo colorants that may, under the specified test conditions, yield listed aromatic amines in textile and leather articles that may come into direct and prolonged contact with the human skin or oral cavity. Do not frame it as a universal legal requirement for every polyester throw in every market. For EU sales, the first sourcing question is whether the finished article falls within that article-contact scope. For U.S.-only shipments, the same report is usually a contractual buyer requirement, not a U.S. statutory obligation by itself.

State the limit correctly. The trade reference point is typically 30 mg/kg for each listed aromatic amine under the applicable REACH restriction. Many current legal references and lab templates align to 22 listed amines for Entry 43. Some brand manuals, legacy methods or wider RSL protocols still mention 24 amines. Buyers should not let the supplier choose that number casually. The PO and test request should state whether the shipment is being assessed against the current applicable legal list or against a broader customer protocol.

For U.S. importers, separate law from contract in plain words. Strong wording is: Buyer requires finished-article azo amine testing to REACH Annex XVII Entry 43, or to buyer RSL where stricter, as a contractual shipment-release condition for this PO. That avoids implying a U.S. legal mandate where none exists, while still making the report a hard commercial gate.

A usable RFQ line is: 100% polyester printed mink throw, target finished weight 250gsm ±5%, one-side print, finished size 130x160cm ±3cm, edge finish as approved, finished article and identified components to be tested for restricted aromatic amines against REACH Annex XVII Entry 43 by a third-party ISO/IEC 17025 laboratory with EN 14362 method within accredited scope, report required before shipment release. If colourfastness, flammability, packaging chemistry or care-label checks are also required, list them separately rather than hiding them inside “EU compliant”. Buyers aligning broader documentation controls can also review textile certifications explained: buyer guide and blanket quality control inspection.

Know the print route before you decide the testing plan

“Printed polyester” is too broad to manage. On 250gsm mink plush throws, the main print routes are usually transfer or sublimation printing, direct disperse printing, and in some programs surface pigment printing with a binder system. These routes do not create identical sourcing risk. Azo screening has to be tied to the actual colourant or ink family, plant and process route used for bulk.

For transfer or sublimation, buyers usually watch paper source, disperse ink set, press temperature, dwell time and cross-contamination controls between jobs. For direct disperse printing, there are more wet-process variables: paste preparation, screen cleanliness, fixation profile, reduction clearing where used, wash-off discipline and shared-machine contamination. For pigment routes, the question is not that pigment is automatically safer or riskier. The question is whether the chemistry package, binder system and any auxiliaries are controlled, documented and consistent between sample and bulk. Treat these as sourcing-risk differences, not simplistic chemistry rankings.

If the supplier cannot declare whether bulk will run via transfer print, direct disperse print or pigment route, the program is not ready for approval. Ask the mill or print house to declare: print route, plant name, subcontractor name if any, ink or colourant family, whether sample yardage and bulk will run at the same site, whether labels or bindings come from different vendors, and whether any post-print heat-setting or brushing is applied after printing. Any change in those variables should feed directly into your retest checklist.

For printed fleece development control points, buyers can compare the process-risk logic in digital sublimation printing on fleece and broader decoration trade-offs in custom blanket decoration methods.

Ask for the exact method reference, not just an 'azo free' statement

The common sourcing mistake is asking for an “azo dye test” without defining the legal basis, sample description or method reference. A stronger request is: finished article testing for restricted aromatic amines under REACH Annex XVII Entry 43 using EN 14362-1 and, where relevant, EN 14362-3 or equivalent applicable method, performed by a third-party laboratory whose accredited scope covers the requested azo method. That is more useful than a generic “azo free” statement, which many buying teams cannot defend during a compliance review.

Use method-specific language in your files. Avoid loose wording such as “release of listed amines” without method reference. Lab reports may describe the result as aromatic amines detected after reductive cleavage of certain azo colorants under the test method, or similar method-linked phrasing. Buyers need the exact standard cited so they can judge comparability between reports. If one lab used EN 14362-1 and another used a brand-modified protocol, treat them as different evidence unless the buyer compliance team confirms equivalence.

State the decision threshold in the PO or lab instruction: pass criterion: each listed aromatic amine not exceeding 30 mg/kg, unless the customer manual sets a lower internal action limit. Some retailers require a broader analyte list or stricter internal pass level. Write that as a contractual requirement and keep it separate from the legal REACH basis. Do not assume a REACH pass automatically satisfies every retailer manual.

ISO/IEC 17025 accreditation alone is not enough. Buyers should verify that the specific azo method requested, such as EN 14362-1 and where applicable EN 14362-3, is actually inside the laboratory’s accredited scope. A generic 17025 certificate without method-scope coverage is weak protection if the report is challenged at shipment review.

For adjacent restricted-substance sourcing logic, see REACH Annex XVII azo dye screening on printed flannel fleece throws and azo dye testing for yarn-dyed acrylic throws.

Use a staged sample decision tree instead of one random report

Sampling protocol should match the commercial decision being made. Use a simple stage gate. Strike-off or sample-yardage testing supports supplier approval and chemistry screening only. It does not release bulk shipment. Pre-production sample testing supports artwork and route confirmation if the same plant, ink family and accessory set will be used for bulk. Bulk-lot testing supports lot-level risk control on actual production. Pre-shipment testing supports shipment release, provided the sample is tied to the shipped lot and all high-risk components are covered.

For sample approval, a cut from the printed face only can be commercially useful where the buyer is screening print chemistry before bulk. That approach is faster and cheaper, but it leaves clear gaps. It does not cover sewing thread, overlock yarn, satin binding, woven labels, printed care labels, rubber badges, anti-slip prints, zipper pullers, gift ribbons or mixed-material backings. If those parts come from different vendors or chemistry sets, a face-only pass does not protect the whole article.

If the customer requirement is for the finished article as sold, submit either the whole article or a component set clearly identified as representing the finished article. For a plain 250gsm mink throw with overlock edge, that usually means at minimum: printed face plush, reverse side if different, overlock or binding thread, main label, care label, and any added patch or strap. If the throw includes a PVC, PU, PEVA, TPU or foam-backed accessory, or is packed with an attached ribbon or insert that falls under customer chemical rules, test those parts separately or include them in the customer’s required package scope.

A pass report from development yardage does not automatically cover bulk if the plant changes, print route changes, ink family changes, print paper supplier changes, major colour coverage changes, subcontractor changes or bulk runs under a different lot code. Consolidate those retest triggers into the PO rather than arguing later.

A practical evidence trail is: strike-off test for supplier approval, pre-production confirmation on approved colourway and print route, then one bulk-lot or pre-shipment submission tied to the shipment lot. For broader shipment control, buyers often pair chemical review with AQL final inspection such as AQL 2.5 inspection checklist or general guidance in custom blanket lead times and shipping.

Differentiate colourway grouping from colourway gambling

One report should not stand in for a mixed-colour shipment unless the chemistry variables are genuinely stable. Grouping is defensible only where the following are held constant: same base fabric supplier, same fibre composition, same print route, same print house, same ink or colourant family, same accessory suppliers, same finish package, same production window, and no material increase in saturation or dark-ground coverage. If one of those moves, the representation argument weakens quickly.

Acceptable grouping usually means low-variation work. Examples: the same artwork printed by the same transfer-print house on the same 250gsm white polyester plush, with minor tone shifts such as light grey and medium blue, same paper source, same disperse ink set, same production week and same accessory set. Another workable case is two low-to-medium saturation plaid colourways run in the same campaign with identical chemistry control and no subcontractor change.

Grouping becomes weak where the chemistry load or process route changes. Examples that normally need separate testing are: navy, black or dark red heavy-coverage colourways; a pale sample standing in for a black-ground allover print; a change from transfer to direct disperse print; a subcontract print-house change; a change from sample room to bulk plant; a new ink family; or the same artwork with materially higher dark-area coverage. If the order mixes standard overlock throws with satin-bound throws or added labels from a second vendor, do not assume one report covers both.

As a working rule, each of the following usually justifies a separate submission: different print route, different ink set, different subcontractor, different dark/high-coverage colour group, different accessory chemistry set, or different backing material. Buyers with licensed retail or private-label exposure should bias toward more testing, not less. The cost of one extra lab submission is usually lower than a held shipment or a retailer claim.

Reject weak reports before they enter the shipment file

A report is not usable just because the result says “pass”. Reject or question reports that are missing any of these fields: sample photo, buyer style or SKU reference, colourway ID, lot or batch ID where applicable, article description, fibre or component description, test method reference, reporting limit, issue date, laboratory name, and authorised signatory. If the order contains several styles or colours and the report identifies the sample only as “polyester throw”, the evidence is too weak for shipment release.

A practical identification string looks like this: PO-24681 / 250gsm printed mink polyester throw / 130x160cm / CW-03 navy-red plaid / transfer print / Lot MKT-250318-A / Plant 2 / Print house PX-7. The same string, or a shortened traceable version, should appear on the submission form, sample bag, retention swatch and report. If the report has no sample photo, at least require a sealed retention swatch cross-referenced to the report number.

Watch reporting language carefully. “Azo free”, “azo safe” or “meets buyer requirement” is too vague on its own. Buyers should expect to see the actual method reference, analyte scope and either a pass/fail statement against the stated threshold or the analyte table with reporting limit. If the report cites a method you did not request, ask why before accepting it.

If the buyer manual requires finished-article evidence, do not accept a report taken only from sample yardage unless the file explicitly states that the sample is representative of the shipped lot and your internal protocol allows that shortcut. Most retailer compliance teams will not treat that as equivalent evidence if there is a shipment challenge.

Write retest triggers and shipment gates into the PO

Most azo disputes happen because the PO says “pass azo test” and nothing else. Write the retest triggers into the commercial document. A consolidated trigger list should include: change of print route, plant, subcontractor, ink or colourant family, transfer paper supplier, major colourway saturation increase, accessory vendor change, label change, backing-material change, bulk lot split, corrective shade remake, or production delay causing a new chemistry batch. If any trigger occurs, the prior report should be treated as approval history, not bulk-release evidence.

A simple shipment gate works well: No shipment, no balance payment release and no document handover until buyer receives an acceptable report tied to the relevant lot or approved representative grouping. For larger orders, split the gate by lot. If Lot A passes and Lot B fails, do not let the supplier blend paperwork and ship as one compliant lot.

For import terms, keep the same control regardless of whether the order is EXW, FOB Ningbo, FCA Shanghai, CIF Hamburg or DDP UK. The commercial term changes freight responsibility, not the chemistry evidence standard. Buyers comparing cost and control structures can cross-check EXW vs FOB Ningbo, CIF Hamburg costing and DDP UK costing for how documentation gates move in practice.

For care and laundering performance that may be reviewed alongside chemical files, buyers can also align spec language with blanket care washing guide and, where relevant, colourfastness references such as ISO 6330 domestic laundering protocols.

Failure response: hold the lot, isolate the cause, do not paper over it

If a report fails, the first action is not “test again until it passes”. The first action is immediate lot hold. Stop shipment booking, hold packing lists and isolate the physical lot by lot code, colourway and production date. If the order contains multiple colourways or factories, identify whether the nonconformity is limited to one chemistry set, one print-house run or one accessory vendor before deciding next steps.

Run a root-cause review with the print house and supplier. Ask for the exact ink or colourant batch, print route, subcontractor record, cleaning log where relevant, and whether the failing sample differs from the approved strike-off or pre-production route. Confirm whether the issue sits in the printed face, sewing thread, label, binding or a mixed-material component. A face-only retest is not enough if the original submission was meant to represent the whole article.

Do not blend compliant and noncompliant lots in shipment paperwork. If Lot A passes and Lot B fails, do not relabel, average or combine documents. If the supplier proposes a remake, write the remake lot as a new lot with fresh testing. If the failure is isolated to one dark colourway, hold that colourway only if your paperwork, physical segregation and carton marks make that distinction defensible.

Retesting can be appropriate only after the source of failure is understood and the resubmission is clearly identified. Blind duplicate retesting without root-cause review is weak practice and usually creates more file confusion, not less.

Use a clause pack buyers can paste into RFQs and POs

A buyer-facing clause pack is easier to enforce than good intentions in emails. Legal basis clause: “Where goods are supplied for the EU market, textile articles within scope shall meet REACH Annex XVII Entry 43 requirements applicable to aromatic amines from azo colorants. Where buyer RSL or retailer manual is stricter or broader, supplier shall meet the buyer-stated protocol.”

Contractual basis clause: “For all markets, supplier acknowledges that azo amine test compliance to buyer-stated protocol is a contractual condition of shipment release and document acceptance.” Method clause: “Testing shall be carried out by an independent ISO/IEC 17025 laboratory with the requested azo method, such as EN 14362-1 and where applicable EN 14362-3, within accredited scope.”

Sample identification clause: “Each submission shall show buyer PO number, style number, colourway ID, lot or batch ID where available, plant, print route, and clear article description; buyer may reject reports lacking sufficient sample traceability.” Shipment gate clause: “No shipment or shipping document release without acceptable report tied to shipment lot or buyer-approved grouping rule.”

Retest trigger clause: “Any change in plant, subcontractor, print route, ink family, accessory vendor, backing material, dark-colour coverage, or bulk lot identity requires buyer review and may require fresh testing.” Failure clause: “Failed lots shall be placed on hold immediately and shall not be mixed, relabelled or shipped against compliant paperwork.”

This clause pack works better if paired with a one-page compliance checklist in the tech pack or PO appendix. Buyers building new programs may also find low MOQ startup blanket sourcing and how to specify blanket programs clearly useful for supplier onboarding discipline.

Frequently asked

Is REACH Annex XVII Entry 43 a legal requirement for every polyester throw order? No. Entry 43 is relevant to textile and leather articles within its article-contact scope, especially goods placed on the EU market that may come into direct and prolonged contact with skin or the oral cavity. U.S. buyers often request the same testing contractually, but that is usually a customer or retailer requirement rather than U.S. statute. Write the legal basis and contractual basis separately.

Should I ask for 22 amines or 24 amines? Use the current applicable legal list for the market and protocol you are buying to. Many current REACH-aligned reports use 22 listed aromatic amines for Entry 43. Some retailer manuals, legacy methods or broader brand RSLs still call for 24. The supplier should not decide this informally. State in the PO whether the standard is current REACH legal scope or a wider customer protocol.

What test method should appear on the report? Ask for the actual azo method reference, commonly EN 14362-1 and, where applicable, EN 14362-3 or an equivalent applicable standard accepted by your compliance team. Do not accept a bare statement such as 'azo free' without method reference, sample identification and reporting basis.

Is ISO/IEC 17025 accreditation enough by itself? No. The lab should not only hold ISO/IEC 17025 accreditation; the specific azo method you requested should be within the laboratory’s accredited scope. Buyers should verify scope coverage, not just the existence of a generic accreditation certificate.

Can one dark colourway represent the whole order? Sometimes, but only where base fabric, print route, print house, ink family, accessory set and production window are the same, and where coverage and saturation are genuinely comparable. Navy, black, dark red, heavy allover coverage, print-house changes or ink-set changes often justify separate testing.

Does testing the printed face only cover the whole finished throw? No. A face-only submission may be useful for early chemistry screening, but it leaves commercial risk on threads, bindings, labels, patches, backing materials and attached accessories. If your buyer manual requires finished-article evidence, use a finished-article or component-set submission that clearly covers all relevant parts.

When should I test: strike-off, pre-production, bulk or pre-shipment? Strike-off supports supplier approval and route screening. Pre-production supports confirmation of the approved print route and colourway. Bulk-lot or pre-shipment testing supports shipment release. A pass on sample yardage is not a shipment-release substitute if plant, route, chemistry or lot identity changes.

What should I do if a report fails? Place the lot on immediate hold, stop shipment release, isolate the affected colourway or lot, and run root-cause review with the print house and supplier. Confirm whether the issue is limited to one chemistry set or component. Do not blend compliant and noncompliant lots in shipment paperwork. Retest only after the cause and the new sample identity are clear.

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