What a technical buyer asks a chemical supplier before the first trial order

Your sample passes in the buyer's lab, and then the trial stalls because stores wants a safety data sheet in the same product name as the drum. Before a first trial order, a chemical buyer's questions come from three different people. The chemist wants data and a sample that matches a real lot. Purchase wants packing, price basis and a name to call. Stores and the safety team want handling and storage details. Documents differ by buyer and product, so ask for the buyer's list first and answer all of it in one set.

Why a first trial is a test of the supplier, not only the product

The buyer already has a supplier, so a trial of yours usually means the current one has let the buyer down or someone wants a second source. The lab tests the sample, but the whole company is testing you: how fast you answered, whether the papers matched the drum, whether the lot number on the certificate matched the label. A good result from a supplier who sent mismatched papers still loses, because the buyer pictures the same confusion on a production order.

What the lab or quality chemist asks

This is the person who decides whether the trial passes. The chemist wants:

• A technical data sheet that states the parameters the lab will test, with the test method behind each figure.
• A certificate of analysis for the exact lot the sample came from, not a typical-values sheet.
• The shelf life, and the conditions it assumes.
• What the product is meant to do in the process, and at what dosage or ratio you suggest starting.
• A named chemist on your side the lab can call when the result surprises the lab.

Ask one question back: which test method will the lab use? If it differs from yours, figures will not match, and you want to know that first.

What purchase asks

Purchase has no view on chemistry. The need is to compare you with the current supplier and raise an order without calling you three times.

Expect questions on your pack sizes and the price basis: per kilo or per drum, delivered or ex-works. Then minimum order, payment terms and lead time. Purchase will also ask for GST details and, sometimes only after the trial, vendor registration forms. Our post on quoting by the drum, tanker or kilo sets out a quotation that can be compared line by line.

What stores and safety ask

The person who receives the drum is easily forgotten, and can stop a trial alone. Stores needs the safety data sheet, labelling on the pack that matches it, storage conditions, and what to do with a spill or an empty container. Some products need a cool room or must be kept apart from other materials. Stores needs to know that before the truck reaches the gate.

Rules on labelling, transport and storage for chemicals differ by product and by body and change. Check with your own adviser or the relevant authority, and do not tell a buyer that a rule does or does not apply unless you have confirmed it.

Imagine a paint additive maker in Jeedimetla

Imagine, as an invented example, a unit in Jeedimetla, Hyderabad, making a dispersing additive for paints. A paint maker near Pune asks for a sample for a trial.

The sales person couriers a 1 kg sample from the lab, the brochure and a price per kilo. The paint maker's lab tests it and likes the result. Then stores asks for the safety data sheet, and quality asks for the certificate of analysis for the lot. The unit sends a typical-values sheet and a safety data sheet in a different product name from the one on the bottle. The trial stalls for three weeks while papers go back and forth. When a production drum finally arrives for a plant trial, its viscosity sits at the edge of the range the lab sample showed. The paint maker's chemist loses confidence and the trial is closed, with about ₹40,000 of product and courier written off.

The unit changed its routine before the next enquiry. The first reply to a trial request now asks the buyer's lab, purchase and stores teams for their lists. The sample is drawn from a production lot, with that lot's certificate. Every paper uses the same product name as the label. A named chemist calls the buyer's lab once the sample lands. The next trial, with a coatings maker in Chakan, ran without a request for a missing paper, though it took a week longer to start because the unit waited for a certificate on a production lot.

The trial pack, sent as one set

Put these in one email and one folder, named so the buyer can forward each to the right person:

1. Technical data sheet, with test methods
2. Safety data sheet, under the same product name as the label
3. Certificate of analysis for the sample's lot
4. Packing and storage note: pack sizes, storage conditions, shelf life
5. Commercial note: price basis, minimum order, payment terms, lead time
6. One page on your plant and who to call, by role

The first five are sales collateral, built once and kept current.

When to hold back the trial

Not every sample request deserves the full pack. If the enquirer cannot say what process the product is for, or who in the company will test it, it may be a price check. Ask those two questions first.

Hold back, too, if your production lots do not yet stay inside the range your data sheet claims. A trial won on a lucky lot becomes a complaint on the next one.

Assemble the six papers for your three busiest products

Take the three products that draw the most sample requests. Gather the six documents for each, under a single product name. Then write the first reply that asks for the buyer's own list. How these buyers shortlist a supplier in the first place is on the chemicals hub. If you want help building the pack, or sorting genuine trials from price checks through lead qualification, tell us what you need.