About NozzleCheck

NozzleCheck is an independent knowledge base for print-on-demand production: apparel, drinkware, wall art, objects, embroidery, books, and the industrial digital printing behind all of it. This address is where the letter goes out. The knowledge base itself is at nozzlecheck.com.

What arrives

Pulse, on Mondays. One lead item worth taking into a shift plan. A handful of signals, each with the reasoning attached and the link it rests on. One verdict. Then the compliance dates that are close enough to matter. Every item carries its source. A claim without a working link does not go out.

Four rules

• Every number links to its source. If we cannot show you where a figure came from, we do not print the figure.
• Public information only. Never the internal data of any company.
• No vendor money in editorial. No affiliate links on hardware. Sponsorship, if it ever exists, is labelled and kept out of the copy.
• Written from the production floor. If a paragraph reads like a brochure, it gets rewritten before it goes out.

How a claim becomes a verdict

The source is fetched and read. A verdict has to quote the exact span it rests on, and that quote is checked against the fetched page by a script. A verdict whose evidence cannot be found in the source is discarded before anyone sees it. If a publisher blocks automated access, we say so and publish no verdict; we do not disguise the fetcher as a browser to get around a refusal.

Five ratings, and two of them share a question mark on purpose: "figure unverified" and "no evidence" both mean we could not confirm the claim, which is not the same finding as disproving it. The full method is on the methodology page.

What is already checked

Issue 001 runs to eight sections and 243 sourced references. Every claim we have rated sits in the verdict register, including the ones whose finding was that the number could not be confirmed. The register states its own count; this page does not, because a number repeated in two places goes stale in one of them. Failed checks are published. We do not quietly drop the claims that did not hold.

Corrections

Show us a verdict is wrong and it gets corrected. Write to hello@nozzlecheck.com with the claim and what the source actually says. A correction backed by a source is acted on, and you get an answer either way. Corrections stay visible in the page history rather than replacing what was there, because the record of having been wrong is part of the record.

Who writes it

One editor decides what runs. Research and drafting are AI-assisted; every claim is verified against a primary source, and a person approves everything before it goes out. We do not badge individual pages as AI-generated, because the relevant fact is not which tool typed the words. It is whether the claim is sourced and who stands behind it.