Restricted Chemical Lot on Certified Style Audit with AI

By Josh Brook on October 29, 2026

restricted-chemical-lot-certified-style-audit

In a dye kitchen, a certified style and a non-certified one can pull from the same rack within the same hour. If a dye or auxiliary lot that isn't on the style's approved list reaches the machine, the fabric may still pass every shade check while the OEKO-TEX certificate no longer reflects what was made. Restricted chemical lot control stops that at the dispense point by reading each container and checking it against the certified style before the scale opens. Watch an off-list lot get stopped in a short dispense control demo.

DISPENSE-LOT VISION · CERTIFIED-BOM RULES

Stop an Off-List Chemical Lot at the Scale, Not After the Dye Run

iFactory reads every container label and barcode at the dispense station and checks the lot against the approved chemical list for the certified style. If the lot isn't approved, dispense is blocked and the event goes into the audit log.

Dispense station 3 · Kitchen ARecipe R-5531
Lot CH-2207SUP-K14
Levelling agent · 25 kg drum · supplier code SUP-K14
Scale reading4.82 kgRecipe target 4.80 kg
Rule check for this dispense
Style ST-118STANDARD 100 class II (illustrative)
Chemical on approved listNo
ECO PASSPORTNot listed
Dispense blockedLogged 09:42:15
OEKO-TEX COMPLIANCE: ARTICLE VS CHEMICAL

STANDARD 100 Certifies the Article, ECO PASSPORT Certifies the Chemical

The two labels are easy to confuse, and the difference decides what your dye kitchen must control. OEKO-TEX STANDARD 100 certifies textile articles at every stage from yarn to finished product, tested against a list of more than 1,000 substances. The STANDARD 100 document states that chemicals, auxiliaries and colourants aren't covered by it. Those can be certified under ECO PASSPORT. Compare your own certificates with our chemical compliance team.

STANDARD 100 · THE ARTICLE
  • Certifies yarns, fabrics and finished textile articles
  • Limit values depend on the article's product class
  • Certificate issued for one year, then renewed
  • Holder keeps production matching the tested samples
ECO PASSPORT · THE CHEMICAL
  • Certifies chemicals, colourants and auxiliaries
  • CAS number screening, lab analysis and self-assessment are mandatory
  • On-site visit is optional, at the applicant's request
  • Certificate valid for one year
Limits are revised every year

OEKO-TEX publishes new regulations annually. The 2026 set took effect on 1 June 2026 after a transition period, so record which edition each certificate was issued under.

STANDARD 100 PRODUCT CLASSES

Four Classes, With Tighter Limits the Closer a Textile Sits to Skin

Each certified article falls into one of four product classes, and the limit values follow the class. Class I, for babies and toddlers up to 36 months, has the strictest limits. Build your approved chemical list per style and per class, because a chemical that suits a class IV curtain may not be acceptable on class II bed linen. Review your class split in a style mapping session.

I
Babies and toddlersArticles for children up to 36 months. Strictest limit values
II
Large skin contactUnderwear, blouses and bed linen. Style ST-118 in this page's example
III
Little skin contactJackets and stuffings
IV
Decoration materialsCurtains, upholstery fabrics and floor coverings
TEXTILE RSL AND MRSL

Four Lists Your Dye Kitchen Has to Answer To

Certification limits are only one layer. Many brands also require ZDHC MRSL conformance, which controls substances intentionally used in manufacturing, and an RSL, which limits substances in the finished product. The AFIRM Group's RSL for apparel and footwear is a common base that brands adopt or extend. Each list asks a different question, so the rule layer keeps them apart. Ask our support team how list editions are kept current.

List
Applies to
Set by
What the dispense check does
STANDARD 100 limit values
The finished article, by product class
OEKO-TEX
Allows only chemicals cleared for the style and its class
ECO PASSPORT
The chemical product itself
OEKO-TEX
Shows certificate status and expiry for each chemical on file
ZDHC MRSL
Chemical formulations used in manufacturing
ZDHC
Flags formulations with no MRSL conformance evidence
Brand RSL
Substances in the finished product
Each brand, often built on the AFIRM RSL
Applies brand limits to that brand's styles only
CERTIFIED STYLE AUDIT RISK

Why a Quiet Chemical Swap Puts a Certified Style at Risk

The certificate covers the article as tested. The STANDARD 100 document asks the holder to inform the institute immediately of changes to materials, mixes, technical procedures or recipes, and treats products made through a different process as uncertified until the institute confirms them. A swap that looks routine to purchasing can become a certification issue on the floor. Confirm the exact wording in your own certificate terms, and see how swaps are flagged in a change control demo.

1
Same chemical, same supplier, new lotLot read and logged, released if the product is on the style's list
Routine
2
Same chemical from a different supplier siteConfirm the supplier's documents and certification cover that product as supplied
Review
3
Supplier reformulates under the same trade nameRequest a revised SDS and fresh certification evidence before first use
Review first
4
A different chemical substitutedNot on the approved list. Compliance decides, and informs the institute where the terms require it
Block
CHEMICAL COMPLIANCE VISION: THE LIMITS

A Camera Reads the Label, Never the Chemistry

No camera can detect what is inside a drum. A restricted substance looks exactly like a compliant one, and two lots of one product look the same whether or not the supplier reformulated. What vision does well is read the label, barcode, supplier code and lot number at the moment of dispense. The rule layer then checks that lot against the style's approved list, while supplier documents and lab tests cover the chemistry itself. Map this split for your kitchen with our support engineers.

What the camera reads
✓Product name and supplier code
✓Lot number and barcode
✓Expiry or retest date printed on the label
✓Container ID and seal in place
✓Scale reading at the moment of dispense
What it can't see
×The actual composition of the chemical
×Restricted substance content
×Whether the formulation changed
×Whether a certificate is still valid
×Contamination inside the container
What closes the gap

Certification evidence such as ECO PASSPORT, supplier SDS and declarations, MRSL conformance evidence, certificate dates held in the rule layer, and periodic lab tests on chemicals and finished fabric.

Ask the Kitchen Log Which Styles Were Exposed

A chemical compliance manager needs answers by style and by lot, not a pile of dispense slips. iFactory replies in plain language, with the label photo and the rule result behind every reply.

Kitchen A · Compliance manager and iFactory
Compliance managerDid anything off-list get near a certified style this week?
iFactoryThree blocks, all on style ST-118. Two were lot CH-2207, a levelling agent not on its approved list. The third was an expired certificate on file. None reached the machine.
Compliance managerWhy was CH-2207 in Kitchen A at all?
iFactoryIt was received for a non-certified order and racked in C4 beside approved stock. Moving it to the non-certified rack would stop repeat picks.
DYE KITCHEN COMPLIANCE CONTROLS

Five Gates Between the Recipe and the Machine

Each gate is a decision point, and a lot that fails any of them never reaches the dye machine. The gates follow the order the kitchen already works in, so operators see one extra check rather than a new process. Plan the gates for your kitchen in a dispense walkthrough.

1
Recipe callRecipe R-5531 called for style ST-118, and its approved list is loaded
List loaded
2
Container readCamera reads label, barcode and lot as the container is presented
Lot CH-2207
3
Rule checkProduct checked against the approved list, certificate dates and the brand RSL
Not approved
4
WeighWeight compared with the recipe tolerance, only after gates 1 to 3 pass
Not reached
5
Release or blockOn a fail, dispense stays locked through the dispensing system, the reason is logged and compliance is alerted
Blocked
CHEMICAL BOM AUDIT TEMPLATE

An Approved Chemical List for Each Certified Style

The rule check is only as good as the list behind it. Keep one list per certified style, owned by chemical compliance and reviewed whenever a certificate is renewed or a supplier changes a product. The fields below are a working example. Our support team can share a blank copy.

StyleST-118 cotton-modal jersey
CertificateSTANDARD 100, class II, renewal date on file
Approved dyesThree reactive dyes, product codes listed
Approved auxiliariesLevelling agent LA-31, soaping agent SP-07
ECO PASSPORT statusRecorded per chemical, with expiry
Brand RSLBrand A RSL, edition noted
MRSL evidenceConformance level per formulation
OwnerChemical compliance manager, review on any change
CHEMICAL RESTRICTION DETECTION

Six Reasons a Dispense Gets Blocked

Most blocks are routine and quickly cleared, which is exactly why each one needs a reason code. A clear reason tells the kitchen what to fix and shows the auditor that the control works. Work out your reason codes in a rule design session.

R1
Not on the approved listThe chemical isn't cleared for this style. Container goes back, compliance is notified.
R2
Chemical certificate expiredECO PASSPORT or other evidence is past its date on file. Hold until fresh evidence is filed.
R3
Label unreadableTorn, wet or covered label. Relabel from the receiving record, then read again.
R4
Supplier code mismatchSame product name, different supplier code from the approved one. Compliance review first.
R5
Lot on quarantineHeld at receiving, for example while documents are awaited. No dispense until released.
R6
Style certificate lapsedThe style's STANDARD 100 certificate is past expiry in records. Compliance confirms renewal status.
TEXTILE RSL SOFTWARE EVIDENCE LOG

The Record an Auditor Asks to See

An audit question about chemistry usually starts with one batch: what went into it, and how do you know? The evidence log answers with records written at the moment of dispense, each carrying the photo of the label. Talk through your usual audit questions with our support engineers.

Dispense record 0942-03Blocked
Time09:42:15
StationDispense 3, Kitchen A
Recipe and styleR-5531 · ST-118
Lot readCH-2207, supplier SUP-K14
Rule resultR1 · not on approved list
ActionReturned to rack C4, reviewed 10:05
Dispense record 0947-03Released
Time09:47:02
StationDispense 3, Kitchen A
Recipe and styleR-5531 · ST-118
Lot readCH-2231, approved LA-31
Rule resultApproved, ECO PASSPORT on file
Weight4.81 kg against 4.80 kg target
DYE KITCHEN COMPLIANCE COST AND ROI

Count the Minutes Spent on Manual List Checks

Avoided recalls and protected certificates are real value, but they are hard to size and shouldn't be guessed. The time spent checking paper lists at the scale can be counted. The inputs below are assumed, and the result is arithmetic only. Run it with your own numbers in a short costing session.

Dispenses per day across kitchens160, assumed
Minutes per manual list check2, assumed
Working days per year300, assumed
Hours per year on manual checks160 × 2 × 300 ÷ 60 = 1,600 hours

Automatic checks don't remove review. Exceptions still go to a person, so use your own block rate to estimate how many of those hours remain.

TURNKEY AI DEPLOYMENT

Dispense Cameras, Rule Engine and AI Server, Shipped Ready

iFactory delivers dispense-lot vision and the certified-style rule check as a single turnkey bundle. A pre-configured NVIDIA AI server ships racked and ready with label and barcode reading models loaded, so label images are processed inside the plant. You rack it, plug in power and Ethernet, and the AI is live. Price it for your kitchens with our support team.

What's Included
  • Pre-configured NVIDIA AI server, racked and ready
  • Label cameras at each dispense station
  • Reading models for labels, barcodes and lot numbers
  • Approved chemical lists per certified style
  • Links to the dispensing system and scales
  • Block reason codes and an audit evidence log
  • Remote monitoring of models and hardware
Live in 6–12 weeks
Wk 1–4
Lists and Stations

Approved lists loaded per style, cameras fitted at dispense stations, scale and dispenser links tested.

Wk 5–8
Silent Checking

Reads and rule results logged without blocking while compliance reviews every mismatch.

Wk 9–12
Blocks Switched On

Dispense blocks enabled, kitchen staff trained and a first audit file produced.

HOW iFACTORY FITS

Built for Dye Kitchens That Supply Certified Styles

iFactory keeps the camera on what it can read and leaves chemistry to documents and labs, with one rule check joining them at the scale. Plan a single-kitchen pilot in a planning call.

1
Dispense-lot vision. Every container label, barcode and lot number is read at the station.
2
Certified-BOM rule check. Each lot is checked against the style's approved list, certificate dates and brand RSL.
3
Block before the machine. An off-list lot can't be weighed or dispensed until compliance clears it.
4
Audit-ready log. Each dispense leaves a record with the label photo and the rule result.
1000+
Industrial clients running iFactory
99.9%
Platform uptime for round-the-clock kitchens
6-12 wks
From racked server to live dispense blocks
FREQUENTLY ASKED QUESTIONS

What Chemical Compliance Managers Ask About Dispense Checks

Does OEKO-TEX STANDARD 100 certify our dyes and auxiliaries?
No. STANDARD 100 certifies textile articles. Chemicals, colourants and auxiliaries can be certified under ECO PASSPORT, and a STANDARD 100 article may state that it uses ECO PASSPORT certified components. See both statuses checked at the scale in a short demo.
Can a camera detect a restricted substance?
No. Vision reads the label, barcode, supplier code and lot. Whether a chemical contains a restricted substance is shown by supplier documents, certification such as ECO PASSPORT and lab tests. iFactory links the lot it reads to that evidence and to the style's approved list.
Do we have to tell OEKO-TEX when we change a chemical on a certified style?
The STANDARD 100 document asks certificate holders to inform the institute immediately of changes to materials, mixes, technical procedures or recipes, and products made differently count as uncertified until the institute confirms them. Check the exact terms with your institute. Walk through a change workflow with our team.
Is a chemical without ECO PASSPORT automatically restricted?
No. ECO PASSPORT is one form of evidence, not the only one. Your compliance team decides the approved list per style using certification, supplier declarations, MRSL conformance and test results. Our support team can help structure those lists.
Which product class does bed linen fall into?
The STANDARD 100 document lists bedding under class II, products with large skin contact. Articles for babies and toddlers up to 36 months fall under class I, which has stricter limits. Your certificate states the class that applies to each certified article.
How do we roll this out across our kitchens?
Delivery is turnkey and goes live in 6 to 12 weeks. Pick the kitchen that serves the most certified styles first, load their approved lists and run silent checks before switching blocks on. Book a 30-minute demo and we will map that first kitchen with you.

Only Approved Chemistry Reaches a Certified Style

Read every container at the scale, check it against the certified style's approved list and block anything off-list before it reaches the machine. Delivered turnkey, live in 6 to 12 weeks.

Example week · Kitchen A dispense log
Dispenses checked812
Blocked dispenses3, all on style ST-118
Cleared after review1, certificate renewed
Records with label photo812 of 812
Evidence file ready for the next audit

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