Method

Specification figures here are traced to a published standard or to a manufacturer's own technical document, and the page says which of the two it is. Nothing is tested on this site.

Which documents are consulted?

Published standards, certification schemes, and the technical data manufacturers issue for their own material.

Where a manufacturer and a standard disagree, both are shown and the page does not pretend the conflict away.

Which values have to come from a laboratory?

Indentation load deflection, density, protein content and ageing, none of which can be approximated outside one.

So they are quoted from whoever did the work, with the source named, and never reproduced as though they had been taken here.

What does this site add?

Counts of what seller pages state, each giving the number of pages read and the day they were read.

The latex pillows in the picks were bought and handled. None is pressed, measured or put on an instrument for these counts. A page that hides a figure in a tab or an image may be counted as silent, and the guides say so where it matters.

What gets corrected?

A superseded document, a specification reissued since it was read, or a reader who shows it has been misread here.

The edit is made in the sentence, not in a note at the bottom, and the review date follows it.