Lab, pilot or commercial: what each stage lets you decide
Two samples can look identical on a bench and still deserve very different readings, because one came from a laboratory batch and the other from a production run. The development stage of the supplier is the missing line on most datasheets. This note explains the three stages in plain terms, what each lets an R&D team decide and what it does not, and which questions to ask before you read a single test result. It applies to any sheet material and any supplier.
Why the stage matters more than the number
A test result describes the specimen that was tested. If that specimen came from a small batch made by hand, the result says what a small batch can do. It does not say what a hundred metres of the same material will do, or how much one batch differs from the next. Without the stage, a good result may be read as a promise, and a poor result may be read as a verdict. Both readings can be wrong.
Stage one: laboratory sample
What it usually is. A small piece made to prove that the idea works, often by the people who developed it, in conditions that are controlled and not repeatable at scale.
What it lets you decide. Whether the concept is interesting. Whether a rough property, such as how it feels or how it takes a dye, is worth following up. Whether the team behind it answers questions well.
What it does not let you decide. Whether you can buy it. Whether the next sample will match this one. Whether a figure will hold across lots. Treat any number from this stage as a single observation.
Stage two: pilot run
What it usually is. A larger run, made with equipment closer to production, in several batches, often to learn how the process behaves.
What it lets you decide. Whether properties repeat within a batch and between batches, to a first approximation. Whether sheet size and thickness can be controlled. Whether the supplier can state a specification and keep to it for a short series.
What it does not let you decide. Whether the supplier can deliver steady volume over months, at a stable price and with stable properties. A pilot may stop, change or move.
Stage three: commercial supply
What it usually is. Regular production sold under terms: a specification, a minimum order, a lead time and a price.
What it lets you decide. Whether to design the material into a product. Whether to commit to a contract. At this stage, claims about the finished material can be backed by lot-level data.
What it does not let you decide. Whether the material suits your product. That still depends on your own tests, because a specification is written for a typical use.
Ten questions to ask about the development stage
- Which stage is the sample I will receive from, in writing?
- How many batches have been made, and what is the largest?
- Is the sample from the same process as the one you plan to sell?
- Did the tests you quote use specimens from this process?
- How do you identify a lot, and will my sample carry the lot number?
- What changed in the process since the last test?
- Which properties are stable between batches, and which are not yet known?
- Do you offer a sample before a contract, and on what terms?
- What would you need from me to run the tests I need first?
- When do you expect the next change of stage, and what triggers it?
What Kora has said about its sheet
Kora lists a flexible sheet from its coconut processing stream and offers sampling before a contract. It has not stated which development stage the sheet is at, and it has published no test data. This is why the register on this site exists: it lets a team say what it needs to measure so that the first tests answer real questions. Read the sample interest register before you write to us, so you know what is defined and what is not.
How to record the development stage
When you receive any sample, put the stage on the label next to the lot number: laboratory, pilot or commercial, with the date and the source of that statement. If the supplier would not state it, write “not stated”. Every later result then carries the right caution with it.
Ask us
If you plan to test a Kora sample, tell us your application and the properties you must measure through the contact page. We reply within two business days. We tell you what Kora can state in writing about the stage, what it cannot and which test would need to be run first.
Questions buyers ask
What can an R&D team decide from a laboratory-stage sheet sample?
Whether the concept is interesting, whether a rough property such as feel or dye uptake is worth following up, and whether the team behind it answers questions well. It cannot show that you can buy it or that the next sample will match, so treat any figure as a single observation.
What does a pilot run of a sheet material let me judge?
To a first approximation, whether properties repeat within a batch and between batches, whether sheet size and thickness can be controlled, and whether the supplier can state a specification and keep to it for a short series. A pilot does not show steady supply over months.
Has Kora stated the development stage of its coconut-derived sheet?
No. Kora lists a flexible sheet from its coconut processing stream and offers sampling before a contract, but it has not stated a development stage and has published no test data. Ask in writing which stage the sample you would receive comes from.
How should I record a sample's stage when it arrives?
Write the stage on the label next to the lot number: laboratory, pilot or commercial, with the date and the source of that statement. If the supplier would not state it, write not stated. Every later test result then carries the right caution with it.