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The PP Sample: The Approval That Decides Your Ship Date

Of all the samples in a production cycle, one matters more than the rest. The pre-production sample, usually shortened to PP sample, is the last thing made before the factory commits to bulk. It is made on the real production line, with the real materials, by the people who will make the order. Everything before it is development. Everything after it is manufacturing at scale.

Which is why the date you approve it is the single best predictor of whether your order ships on time. Not the purchase order date, not the ex-factory date on the confirmation. The approval date, because that is when the clock on production actually starts.

Where the PP sample sits

A typical apparel development runs roughly like this, and other categories follow the same shape under different names.

Proto or first sample: does the design work at all.
Fit sample: does it fit correctly across the size range.
Lab dips and strike-offs: are the colours and prints right in the actual fabric.
Size set: does the grading hold across every size.
PP sample: made on the line, with bulk materials and correct trims, exactly as production will be.
Bulk production.
Shipping sample or top of production: taken from the actual run to confirm bulk matches the approved standard.

The PP sample is the gate. Before it, changes are cheap. After it, changes mean stopping a line, and the factory will charge for it or refuse.

Why the approval date drives everything

When a factory quotes 45 days production, they almost always mean 45 days from PP approval, not 45 days from your order. Materials are usually in by then, the line is allocated, and the count starts when you say go.

Which produces a simple and slightly brutal piece of arithmetic. If your ex-factory date is 60 days away and the factory needs 45 days of production, you have 15 days to approve the PP sample. On day 16 with no approval, the order is late. Not at risk of being late, late, whether or not anyone has said so out loud.

This is the calculation most people do not run, and it is why delays feel like they appear from nowhere. The information was there weeks earlier, sitting in the gap between an unapproved sample and a fixed date.

If you take one habit from this article: for every open order, compare the days remaining before ex-factory against the supplier's production lead time. If days remaining is smaller and the PP sample is not approved, that order needs attention today.

What to actually check before approving

An approval is a statement that bulk made to this standard is acceptable. Check it as though you are signing for the whole order, because effectively you are.

Materials: is it the bulk fabric or component, from the approved supplier, not a substitute used to make the sample quickly.
Colour: check against your approved lab dip under consistent light, not on a screen and not next to a window on a grey afternoon.
Trims and hardware: zips, buttons, labels, care labels, hang tags. These are the most commonly substituted items and the easiest to miss.
Construction: seams, stitch density, finishing. Compare against the previously approved fit sample rather than judging in isolation.
Measurements: check against the spec across the sizes provided, not just the sample size.
Labelling and compliance: country of origin, fibre content, care instructions, and any market-specific requirements.
Packaging: polybags, cartons, barcodes, carton markings. Packaging errors are discovered at the warehouse, which is far too late.

If you approve with conditions, and often you will, be precise about them. Approved subject to shortening the sleeve by one centimetre and replacing the zip with the approved supplier's is a usable instruction. Approved but please improve the finishing is not, and you will get exactly what you asked for.

How many rounds to allow

One round is optimistic for anything new. Two is normal. Three or more suggests either a specification that was not clear enough or a factory that is struggling with the product, and both are worth knowing early.

Build the rounds into the timeline rather than treating each as an exception. If a round takes ten days to make and courier plus your review time, two rounds is roughly a month. A timeline that assumes first-time approval is a timeline that will slip, and the slip will be blamed on the factory when it was actually a planning assumption.

Approve quickly, or say why you cannot

The delay in this step is frequently on the buyer's side, not the factory's. Samples sit on desks. People are travelling. A decision needs someone else's opinion. Meanwhile the factory is waiting and the ex-factory date is not moving.

Two habits fix most of it. Give the factory a target approval date when you request the sample, so they know when to expect a decision and can plan the line. And if you cannot decide by then, tell them and give a new date rather than going quiet, because silence gets interpreted as no urgency and your line slot gets given to whoever is ready.

After approval, hold them to it

Approving the PP sample sets the standard. The shipping sample, sometimes called the top of production sample, is what checks bulk against it. Ask for one from the actual run rather than a repeat of the PP sample, and check it against the approved standard, not against your memory of it.

Keep the approved PP sample physically, sealed and labelled with the date and the order. If there is a dispute about quality later, the sealed sample is the only version of the truth everyone agreed to, and it settles arguments that would otherwise turn on recollection.

The bottom line

The PP sample is the moment control passes from you to the factory. Check it as thoroughly as the order is worth, approve it precisely, and above all approve it on time, because production time is counted from that date and every day you hold it is a day taken off the end. Track the approval against the days remaining, and you will see late orders coming weeks before they announce themselves.

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