What a Supplier Should Tell You Before You Pay: A Pre-Order Disclosure Checklist

This is a disclosure checklist, not a red-flags list. Plenty of pages already catalogue warning signs; this one lists what a research supplier should state plainly, about the order you are about to place, before any money moves. There are seven items: which lot you will receive and whether its certificate will match it; how that lot has been stored since the supplier received it; when it will be dispatched and by which carrier; what documents travel with it; what happens if it arrives wrong; who the seller legally is and how to reach them; and the complete price and terms. A supplier that answers all seven in writing has told you what you are buying. Missing answers are not proof of bad faith. They are gaps you now know about, and it is your call whether to accept them.

The boundary with the neighbouring article matters. The supplier due diligence file is about the counterparty: company registration, role in the chain, quality system, safety data sheets. You assemble it once per supplier. This checklist covers the transaction and gets repeated for every order, because the lot, the stock position, the carrier and the terms can all change between one order and the next. A supplier can pass due diligence in January and still fail to say, in June, which lot is actually on the shelf.

Why a checklist and not a list of warning signs

A warning-sign list tells you what to avoid. It does not tell you what a complete answer looks like, so a supplier that avoids the listed signs passes by default. A disclosure checklist turns that round: it defines what a complete answer contains, and anything short of that shows up as a specific gap rather than a vague unease. The model is not invented. Canadian federal, provincial and territorial consumer ministers agreed a template for internet sales in 2001. Before the contract is formed, it requires the supplier to disclose its name and business address, a fair description of the goods, an itemised price including shipping and taxes, the delivery arrangements, and its cancellation, return, exchange and refund policies. It also requires an express chance for the buyer to accept or decline ^[2]. Each province decides how far such rules apply to a given sale, but as a pre-purchase list it is hard to improve on.

Much of what a buyer wants to know will not appear on a product page, and some of it cannot. Research-use-only material is sold under tight constraints on the limits on what a research-chemical seller can say about its products, so questions about the material itself belong in documents: certificates, specifications, terms. They do not belong in marketing copy. That is where this checklist points.

1. Which lot you will receive, and whether the certificate matches it

Ask for the lot or batch number currently in stock for the item, and for the certificate of analysis carrying that same number. The question is simple and the answer is binary. Either the certificate you can see before paying belongs to the lot that will ship, or it describes some other lot. ICH Q7 expects a certificate to be issued for each batch and to identify that batch, and it expects distributors who pass a certificate on to say which laboratory produced it ^[3]. ISO/IEC 17025 requires a test report to identify the item tested unambiguously ^[5]. A supplier holding two lots of the same item should say which one you will get, or confirm that you may choose.

This is a pre-payment question, not a certificate-reading lesson. Once you have the document, judging it is a separate task, and there is how each field on a certificate is determined and where it can mislead for that. The disclosure you need here is narrower: the lot number, and a yes or no on whether it matches.

2. How the lot has been stored since the supplier received it

A certificate describes material on the day it was tested. What happened afterwards is the supplier's responsibility, and the supplier is the only party who knows it. Ask what condition the stock is held at, whether that is monitored, and whether the lot has been repacked or relabelled since the certificate was issued. WHO's guidance on trade and distribution of starting materials expects distributors to store material under the conditions its supplier specifies, to monitor and record those conditions, and to keep identity intact through any repackaging ^[4]. Most research suppliers are not bound by that guidance. It still describes what a competent answer contains: a stated condition, a record behind it, and a plain statement on repacking.

3. When it ships, how, and when the risk becomes yours

Three separate facts are often folded into one line on a checkout page. The first is the dispatch date: when the parcel leaves the supplier, which is not when it arrives. The second is the carrier and service level, which decide transit time, tracking detail and what compensation exists if the parcel is lost. The third is the point at which risk of loss passes to you. Under the US Uniform Commercial Code, if the contract only requires the seller to hand the goods to a carrier, risk passes to the buyer on that handover. If it requires delivery at a destination, risk passes only when the goods are tendered there ^[6]. A shipping policy that never says which applies has left the most consequential term blank.

US federal rules add a floor on honesty about timing. Under the FTC's Mail, Internet, or Telephone Order Merchandise Rule, a seller must have a reasonable basis for any shipping time it states. If it states none, it must have a reasonable basis to ship within 30 days. If a delay arises, it must tell the buyer and offer the option to cancel for a full refund ^[1]. The Canadian template likewise lets a consumer cancel where goods are not delivered within 30 days of the promised date ^[2]. These rules protect consumers and may not reach every research sale, but they set a sensible expectation. A stated dispatch time should be one the seller can actually support. How much transit conditions matter depends on the material, and a reader weighing a vague answer about packing may want what a spell of warmth actually does to dry material before deciding how hard to press.

4. What documents travel with the order

Ask which documents will be in the parcel or sent separately, and in what form: a commercial invoice naming the seller, a packing list, the lot-matched certificate, a safety data sheet where the jurisdiction requires one, and a written storage condition. The goods-in procedure on your side depends on these arriving together. If a supplier sends certificates only on request after delivery, a lot will sit in quarantine while you wait for the paperwork. That is worth knowing before you order.

5. What happens if the order arrives wrong

Ask for the written policy, not a reassurance. The useful answer covers five things: how long after delivery you have to report a problem; what evidence the supplier requires; whether the remedy is replacement, refund or credit; who pays return carriage; and whether opened material is treated differently. ISO 10002 describes a complaints process as one that is visible, accessible and responsive, with stated time frames and a record of each complaint and its outcome ^[7]. ICH Q7 expects quality complaints to be recorded and investigated, and returned material to be identified and quarantined rather than restocked ^[3]. A reporting window measured in days is normal. What matters is that you know it before delivery, not after.

6. Who the seller is and how to reach them

The due diligence file handles registration and role in depth. At order level the question is lighter but still worth asking every time: is the entity on the invoice the one that takes your payment, and is there a postal address and a monitored contact channel other than a chat widget? The Canadian template lists the supplier's legal name, any trading name, its business address and its contact details among the pre-contract disclosures ^[2]. If the answer changes between orders, with a new trading name, new payment details or a new dispatch country, treat it as a fresh supplier and reopen the due diligence file.

7. The whole price and the terms that go with it

The price should be itemised before you commit: goods, shipping, any handling or insurance charge, taxes collected, and the currency ^[2]. For a cross-border order, also ask who is responsible for any import charges, and state plainly who the importer is. Terms of sale should carry the research-use-only status in the same words as the label, and should say which law governs the contract. None of this is exotic, and a supplier that cannot put it in writing before payment is unlikely to find it easier afterwards.

The pre-order checklist

What disclosure cannot tell you

A complete set of answers describes an order. It does not verify the material. A lot number that matches its certificate shows the paperwork and the container agree with each other; it says nothing about whether the certificate is accurate, and an accurate storage statement does not replace a result on your own bench ^[5]. Disclosure also cannot fix what the seller does not know. A broker who has never seen the storage records of the lot it resells cannot tell you what they say ^[3][4]. Collecting the answers still has real value. You know exactly what you were told, you have it in writing, and if the order goes wrong you have something specific to point to. That record is where the rest of this cluster picks up.