A trial-batch policy for specialty chemicals: how to offer a sample without giving away margin

A plant manager rings, asks you to send a drum to try and promises to tell you how it goes. A trial-batch policy answers that call once, in writing, so nobody improvises under pressure. Who pays for a sample, and how much? What does the buyer get back if the trial leads to an order? And what feedback must the buyer send before getting another one? A lab sample in grams or a litre can stay free. A plant trial of a drum or more should be paid, with the amount credited against the first order. And every trial, free or paid, comes with a short feedback form and a date by which the buyer will decide.

Why chemical samples cost more than they look

A lab sample is cheap. A plant trial is not. Filling a drum, testing the lot, issuing a certificate and shipping it as a regulated material all cost money. Carriers also have their own rules for hazardous goods that can make a small consignment expensive. Check with your transporter before you promise a delivery date for any sample.

The larger cost is your chemist's time: supporting the trial on the phone, sometimes on site, then waiting for a result that may never come. A unit that offers free plant trials to every enquiry spends its technical staff on buyers who wanted a free drum to compare against their current supplier's price.

We have written separately about handling a sample request without giving away your margin for manufacturers in general. What follows is the version for a chemical maker, where the sample is consumed in the buyer's process and leaves nothing behind to inspect.

The policy, ready to adapt

Keep it to one page. Send it with every trial quote, so the buyer sees the terms before anything ships. The quantities and days above are examples; set your own.

Trial terms

Lab sample. Up to 1 kg (or 1 litre) of any listed product, free, sent with the technical data sheet, safety data sheet and certificate of analysis for its lot. One lab sample per product per site.

Plant trial. From 25 kg, invoiced at the list price. The trial invoice is credited in full against the first commercial order for that product placed within 60 days of delivery.

Technical support. Our chemist will call your lab or plant once the trial material arrives and is available on call during the trial. A site visit is arranged by agreement.

Feedback. Within 14 days of the trial, please send the feedback form: the dosage or ratio used, the process conditions, the result against your current product, and your decision.

Second trials. A second trial of the same product at the same site follows once the feedback form for the first is received.

Exceptions. Only the sales head may vary these terms, in writing.

The credit line does the commercial work. A buyer who plans to order loses nothing. A buyer who wanted a free drum to benchmark loses interest, which is the right outcome for both of you.

What the feedback form asks

Make it short enough to fill on a phone in the plant. Five fields are enough:

• Dosage or ratio actually used, against the one you suggested
• Process conditions on the day: temperature, mixing time, anything the buyer changed
• Result, in the buyer's own measure
• Comparison with the current product on the same measure
• Decision: order, second trial with a change, or no

Without the second field, a failed trial teaches your lab nothing. A failed trial is often a dosage the plant changed on the day without telling anyone.

For example: an admixture maker in Nandesari

Imagine, as an invented example, a unit in Nandesari, near Vadodara, making concrete admixtures. It sells to ready-mix plants across central Gujarat.

For years the owner gave any plant that asked a free IBC tank for a trial, plus a site visit from the unit's chemist. One season the owner counted the trials: 22 tanks, about ₹3.5 lakh of product. Only three plants became customers. The rest used the material, gave a verbal "it is fine" and kept buying from their regular supplier. Two had used the trial material on a live pour and asked for a discount on their first order "because the trial already proved it".

The owner wrote the policy above. Lab samples stayed free. Plant trials were now invoiced, credited against a first order placed within a set period. The feedback form went with every trial.

The first plant to receive the new terms in Anand pushed back. The owner's sales head explained the credit: if the trial worked, it cost the plant nothing. The plant manager agreed, ran the trial and filled the form, though the order came a month later than promised. A plant in Ahmedabad declined the paid trial. It had been asking for a free IBC every few months for two years and had never ordered.

When to waive the charge

Waive it for a buyer large enough that the first order dwarfs the trial, but keep the feedback terms and the decision date. Waive it, too, when the trial is your idea, for instance a new grade you want tested on a real plant. In that case you are the one asking a favour.

Do not waive it to beat a competitor who offers free trials. You would be competing for buyers who choose suppliers by what is free.

For the papers the buyer's lab will want in the trial pack, see what a technical buyer asks before the first trial order. The wider trade picture is on the chemicals hub.

Tally last season's trials against orders

List every trial you sent last season, free or paid, and mark the ones that became an order. If most did not, count what they cost you before the next one ships. If you want help writing the terms, handling the buyer who argues about the charge through negotiation and closing, and chasing the feedback form, tell us what you need.