This page is for anyone who manages a bulk order through dyeing: a merchandiser, a mill planner, or a quality controller. Lessons 3.1 to 3.4 each taught one separate fact about colour: how a colour standard is set and communicated, how a lab dip and a strike-off are approved before bulk dyeing, how to read approved, conditional and rejected outcomes on a report, and why an approval should be checked under more than one light source. At work these four facts do not arrive as separate events on separate days. They form one sequence, running stage by stage on the same bulk order, and someone has to keep an honest, current record of exactly where that sequence stands. Without a tracker that reflects each stage's real status, a bulk order can slide into dyeing before every prior stage has genuinely passed, and the mistake surfaces only once the fabric is already dyed and the colour is wrong. This lesson closes Course 3 by combining the four earlier lessons into that one tracked sequence, using Order A's own colour approval chain, with a domestic Make to Stock reorder as the working case.
You need: lessons 3.1 to 3.4 — how a colour standard is set and communicated, how a lab dip and a strike-off are approved, how to read an approval report's outcome, and what shade variation and metamerism are.
By the end of this lesson you can:
Not covered here: how a colour standard is first set (lesson 3.1), how a lab dip differs from a strike-off (lesson 3.2), the three approval-report outcomes in detail (lesson 3.3), and what causes shade variation and metamerism (lesson 3.4).
| Term | Meaning |
|---|---|
| Colour standard | The reference colour a buyer sets and communicates to a mill, against which every lab dip and bulk dyeing is checked. |
| Lab dip | A small dyed sample a mill produces in its lab to show how close it can get to a colour standard, before bulk dyeing. |
| Strike-off | A larger sample produced on the actual bulk fabric substrate, confirming the colour holds on real production material. |
| Approved | An approval report outcome meaning the sample matches the colour standard within tolerance, so the next stage can proceed. |
| Conditional | An approval report outcome meaning the sample can proceed only once a specific stated adjustment is actually met. |
| Rejected | An approval report outcome meaning the sample does not match the standard and a new sample must be resubmitted. |
| Shade variation | A difference in colour between separate dye lots, even when both were dyed to the same colour standard. |
| Metamerism | When two colours that match under one light source look different under another light source. |
| Colour approval tracker | The working template that logs each stage of a colour approval sequence, its dates, and its current status, for one bulk order. |
This closing lesson does not add a new fact about colour. It assembles the four facts Course 3 already taught into one sequence, tracked stage by stage: the colour standard is set and communicated to the mill (lesson 3.1); a lab dip is submitted and approved against that standard, checked under more than one light source (lessons 3.2 and 3.4); a strike-off is submitted and approved on the actual bulk fabric substrate (lesson 3.2); and only once every prior stage shows a genuine approved outcome, not a skipped or misread conditional one, does bulk dyeing receive its sign-off (lesson 3.3). The colour approval tracker introduced across this course exists to hold this sequence in one place, so anyone following the order can see exactly where it stands at any moment, rather than piecing the picture together from separate emails and memory.
| What can differ | The shapes you meet | Why it matters |
|---|---|---|
| Stage 1, colour standard set | A physical swatch or a standardised colour reference communicated to the mill before any dyeing begins (lesson 3.1). | Logging this stage without a genuine standard leaves every later stage with nothing fixed to check against. |
| Stage 2, lab dip submitted and approved | Checked against the standard under more than one light source before the record shows "approved" (lessons 3.2, 3.4). | A lab dip approved under only one light source can still hide a real metamerism problem. |
| Stage 3, strike-off submitted and approved | Confirms the colour holds on the actual bulk fabric substrate, not just the lab sample (lesson 3.2). | A lab dip match does not guarantee the bulk fabric will take the dye the same way. |
| Stage 4, bulk dyeing sign-off | Proceeds only once every prior stage shows a genuine "approved" outcome, never a skipped or misread conditional one (lesson 3.3). | Signing off on a false "approved" entry lets a colour mismatch reach the full dye lot. |
Rowad Knits is filling a domestic Make to Stock reorder built to Order A's own construction: single jersey, 180 GSM, Ne 30/1 combed cotton. The reorder reuses Order A's own already-approved colour standard rather than setting a new one, so the sequence starts one stage further along than a brand-new colour would. Rowad Knits still needs Colorline Dyeing to submit and gain approval for a lab dip and a strike-off against that standard, and to hold off the full dye lot until both are genuinely approved, before Colorline Dyeing commits its 300 kg dye-lot minimum to this reorder. Rowad Knits' planner logs each stage on the colour approval tracker as it happens, so both companies can see the sequence's real, current status at any time.
The worked numberThe worked output for this lesson is not a new figure; it is a complete, realistic tracker entry for this reorder, logged exactly as it should be while the sequence is still under way.
| Approval stage | Date submitted | Date decided | Status |
|---|---|---|---|
| Lab dip 1 (against Order A's own colour standard) | 2026-01-05 | 2026-01-08 | Approved |
| Strike-off (bulk fabric sample) | 2026-01-10 | 2026-01-14 | Conditional |
| Bulk dyeing sign-off | 2026-01-16 | — | In review |
Reading this row by row: the lab dip is approved, so stage 2 is genuinely closed. The strike-off came back conditional, meaning a stated adjustment must still be met before it counts as approved. The bulk dyeing sign-off is correctly logged as "In review", not "Approved", because the strike-off has not yet cleared its condition. A tracker showing exactly this is doing its job: it tells Rowad Knits' planner, and anyone else who opens it, that bulk dyeing cannot start yet.
The methodA common mistake is entering "Approved" on the tracker for a stage whose real decision has not yet arrived, because the schedule is tight and an earlier stage already passed. The tracker's entire value depends on it showing the real, current status of each stage, not a hoped-for one. A tracker with even one false "approved" entry can no longer be trusted by anyone who reads it, and it defeats the tracker's own purpose: catching a genuine colour problem before it reaches the full bulk dye lot, not hiding one behind an entry that looks finished when it is not.
Colour approval for a bulk order runs through four steps, one after another: agree the colour, get a small sample right, get a bigger sample right on the real fabric, then give the go-ahead for the full batch. Someone has to write down, honestly and as it happens, exactly how far that process has really got. Writing down a step as finished before it is actually finished, just to keep things moving, hides a problem instead of catching it. The whole point of keeping a written record is that it shows the true picture at any moment, so nobody starts the expensive final step on a false promise that everything earlier is fine.
Rowad Knits' planner is updating the colour approval tracker for the domestic reorder. The facts on the desk:
The planner's own note on the situation, exactly as written:
> "The lab dip already passed, so the strike-off will probably come back fine too. I don't want to lose the bulk dyeing slot, so I am going to mark the strike-off row 'Approved' now and correct it later if Colorline Dyeing's answer turns out different."
Should the tracker's strike-off row be updated to "Approved" now, before Colorline Dyeing's actual decision is recorded?
No. The strike-off row should keep reading "In review" until Colorline Dyeing's actual, current decision is recorded, whatever that decision turns out to be.
Two facts decide this. First, a lab dip's approval does not guarantee a strike-off's outcome: the two samples are produced on different substrates, and lesson 3.2 already showed that the bulk fabric can behave differently under the same dye. Second, the tracker's whole purpose is to show each stage's real, current status so that bulk dyeing sign-off (stage 4) never proceeds on a false picture; marking "Approved" now, before the real decision exists, creates exactly the false picture the tracker exists to prevent.
If the planner marks it "Approved" and Colorline Dyeing's real decision is "Conditional" or "Rejected", anyone reading the tracker — including whoever authorises the bulk dyeing sign-off — would see a false "all clear" and could approve the full dye lot on a colour that has not actually passed. Losing the booked slot is a real, immediate cost; approving a colour mismatch into a 300+ kg bulk dye lot because the tracker lied about the strike-off is a larger one.
This lesson's cost is framed qualitatively, not as one dollar figure, because the risk is a chain reaction, not a single fixed loss: a false "approved" entry on the strike-off stage can let bulk dyeing sign-off proceed on a colour that was never actually confirmed. If the real decision later turns out conditional or rejected, the mill has already committed a full dye lot, at or above Colorline Dyeing's own 300 kg minimum, to a standard the fabric may not genuinely match. That fabric must be re-dyed or discarded, delivery slips anyway, and every later reading of the tracker becomes suspect, since one dishonest entry undermines trust in every other status it shows. The honest alternative costs schedule pressure now; the false entry risks a wasted bulk batch later.
Lessons 3.1 to 3.4 introduced the facts behind each row; this lesson fills the tracker itself, stage by stage, for one bulk order. Copy this table into your own tracker and fill it from the actual decision on each stage, not from what you expect the decision to be.
| Stage | Rowad Knits' reorder (filled in) | Your order |
|---|---|---|
| Colour standard communicated | Reused: Order A's own approved standard | |
| Lab dip submitted and decided | Approved, 2026-01-08 | |
| Strike-off submitted and decided | Conditional, 2026-01-14 | |
| Bulk dyeing sign-off | In review — held until the strike-off's condition is met |
1. What are the four stages of the tracked colour approval sequence, in order?
2. Should a stage be marked "Approved" before its actual outcome is confirmed, to keep the schedule on track?
3. A 20,000-piece export order has an approved lab dip, but its strike-off reads 'Conditional — approved if darkened by 3%.' The mill runs a 400 kg bulk dye lot without the adjustment. What is wrong?
| EN | AR | FR | TR | Meaning |
|---|---|---|---|---|
| Colour standard | معيار اللون | Étalon de couleur | Renk standardı | The reference colour a buyer sets and communicates to a mill, against which every lab dip and bulk dyeing is checked. |
| Lab dip | عينة مختبر (لاب ديب) | Lab dip | Lab dip | A small dyed sample a mill produces in its lab to show how close it can get to a colour standard, before bulk dyeing. |
| Strike-off | الطبعة التجريبية (سترايك أوف) | Strike-off | Strike-off (deneme baskısı) | A larger sample produced on the actual bulk fabric substrate, confirming the colour holds on real production material. |
| Approved | معتمد | Approuvé | Onaylandı | An approval report outcome meaning the sample matches the colour standard within tolerance, so the next stage can proceed. |
| Conditional | اعتماد مشروط | Conditionnel | Koşullu | An approval report outcome meaning the sample can proceed only once a specific stated adjustment is actually met. |
| Rejected | مرفوض | Rejeté | Reddedildi | An approval report outcome meaning the sample does not match the standard and a new sample must be resubmitted. |
| Shade variation | تفاوت درجة اللون | Variation de nuance | Ton farkı | A difference in colour between separate dye lots, even when both were dyed to the same colour standard. |
| Metamerism | الميتاميريزم | Métamérisme | Metamerizm | When two colours that match under one light source look different under another light source. |
| Colour approval tracker | متتبع اعتماد اللون | Suivi d'approbation des couleurs | Renk onay takipçisi | The working template that logs each stage of a colour approval sequence, its dates, and its current status, for one bulk order. |
You can now track a whole colour approval sequence, stage by stage, on one working tracker. Course 4 moves to a different kind of colour decision on the same fabric: how a design gets printed onto it, and which printing method a mill chooses for a given design and order size. Back to the course map