Glass Bottle Sourcing Checklist

Sourcing glass bottles or jars from China runs through nine stages, from a written brief to a reconciled delivery, and each stage is finished only when a specific deliverable exists. Most losses come from skipped steps, not bad luck: a brief with no neck finish, a sample approved by eye, a purchase order with no packing annex, a balance paid before the inspection report. Use the sequence below as your own checklist and hold suppliers to it.

The nine stages and what closes each one

Buyers skip the written brief and the signed limit samples more than any other steps, and those two omissions lead to the costliest disputes.

Brief and supplier verification

What the written brief must contain

Later arguments nearly always lead back to a vague brief. Put these on paper before contacting anyone:

• the product and how it is filled: hot-fill, carbonated, still or cosmetic;
• capacity, stated as both brimful and fill-point volume;
• target bottle weight, or a weight range;
• the neck finish standard and the closure it has to accept;
• glass colour and what decoration you intend;
• quantity per SKU and annual volume;
• destination port and Incoterm;
• the compliance set for your market (EU 1935/2004, FDA, SABER).

No drawing? Supply a physical sample, or a competitor's pack that can be measured. A supplier given all of these fields can quote on facts; one given less will quote on assumptions. For the inquiry document itself, our RFQ checklist for bottles and jars goes field by field.

Verify before you compare

Draw up three to five candidates from the brief and check each one before looking at its numbers. Ask for business and export licences, an ISO 9001 certificate whose scope reads manufacture and not sales, the machine and furnace configuration set against your volume, and reference shipments into your destination market. Anything larger than a stock trial order justifies an on-site audit; the checkpoints are listed in our guide to auditing a glass bottle plant. Ranking quotes from unverified names is ranking fiction.

Quotes and samples

Quotes built on one structure

Every shortlisted supplier gets the identical brief and answers in the same layout: ex-works price, decoration per layer, export packing, minimum per SKU, mould and tooling where they apply, sampling terms, lead time, payment terms and validity. Then convert each offer to landed cost at your port. The cheapest ex-works offer often drops down the ranking once packing, freight and duty are added.

Samples approved by measurement

Check dimensions against the drawing using calipers and finish gauges. Confirm capacity with a fill test and weight on a scale. For critical ware, view annealing stress on a polariscope. Fit the real cap or pump and torque it to spec. Decorated ware is judged for colour against a physical limit panel, never a screen.

Sign and date two sets of limit samples, one kept by you and one by the supplier. They are the standard the pre-shipment inspection will be run against.

Do this on reorders too. Repeat orders are where quiet substitutions occur: another stock-mould variant, a fresh closure batch, a different decoration vendor. Limit samples with recorded weight, dimensions and finish gauge results turn "same as last time" into something enforceable, and the effort is small next to a rejection at your co-packer.

Contract and production follow-up

The purchase order carries little by itself; the annexes carry the protection. Four belong with it:

• Quality agreement: defect catalogue, AQL plan per ISO 2859-1, and the remedy when a lot fails.
• Packing specification: carton ECT, dividers and pallet pattern, as set out in our packing specification guide.
• Inspection clause: goods ship only on a passed report.
• Claims clause: breakage allowance, the evidence required, and the remedy.

Tie payment milestones to events you control. The usual structure is a 30 percent deposit to start production and 70 percent against a passed inspection and shipping documents. Never prepay in full, and read any demand for the balance before inspection as a warning sign; a supplier whose quality control works has nothing to fear from the sequence.

During production, a quiet supplier is not a reassuring one. Fix three checkpoints: mould or material readiness with photos, first articles off the line with dimensions and annealing records from the actual run, and status at 50-percent production. Well-run suppliers send these unprompted. If updates stop mid-run, press for answers then, not at loading.

Inspection, documents and receipt

Pre-shipment inspection

Once the lot is 80-percent packed, carry out the AQL inspection against the signed limit samples and the quality agreement. It covers visual sampling, gauge checks, functional tests for the end use, packing verification and a quantity count. The sampling arithmetic is explained in our quality inspection guide for glass packaging. The balance is released only after the report passes, because that order of events is the whole of a buyer's leverage in import quality control.

Documents and shipment

The core set is the commercial invoice, packing list, bill of lading and certificate of origin. Market-specific certificates are added to it: the food-contact DoC, a health certificate, SABER. Prepare them in parallel from PI stage and cross-check them against each other before release. Each one is described on our export documentation page. Ship under the Incoterm you chose, with marine insurance wherever the risk allocation requires it.

Receipt and feedback

On arrival, examine the container seal before it is broken and photograph the pallets as the doors open. Count the goods, reconcile them with the packing list, and record any breakage against the contract allowance, with evidence, within 48 hours. Then feed the arrival quality data into the supplier scorecard that decides the next order. Sourcing is a cycle, and a properly closed file gives the next brief better data to start from.

How the procurement route shifts the emphasis

All nine stages apply on every route, but the weight moves. A stock mould needs no mould investment and suits a market test; the stages that dominate are one to three and seven to eight, which is to say verifying and inspecting. Modified stock adds finish tooling and suits a brand scaling up its differentiation, and sampling discipline at stage four becomes just as important. Tooling cost and sampling time are confirmed per project, according to scope, decoration complexity and production scheduling.

What to send us first

On managed programmes we run this sequence and hand over each stage deliverable as standard output. Buyers running their own programme can use us for verification, inspection or documentation alone. The sourcing and export support centre maps each stage to its detailed guide. To start, send a brief through the quote form with whatever you already know:

• product type, fill process and target capacity per SKU;
• neck finish and closure requirements, or a sample to measure;
• quantity per SKU and estimated annual volume;
• destination market and its compliance requirements;
• target timeline, and which of the nine stages you have reached.

Frequently asked questions

How long does a sourcing cycle take from brief to shipment?

Timing is quoted per project. It depends on whether a mould or tooling is needed, on the decoration, and on the line schedule at the plant, so it is confirmed once those are fixed.

Where do buyers lose the most money?

In three places. They rank ex-works prices at stage three when they should rank landed costs. They skip measured sampling at stage four, which leaves the stage seven inspection with no standard. And they pay the balance ahead of the inspection report, giving up the one lever that makes remedies real. Each is a process failure and each is an item on this checklist.

Is a purchase order enough without annexes?

No. Without the quality agreement, packing specification, inspection clause and claims clause, the order states what you are buying but gives you nothing to enforce when a lot fails or arrives broken.