Let’s
get this cleared up because Derwent have worked
very hard to take the guesswork out of this. ASTMS relates to the
American Standard Testing paperwork and 6901 means the test is done on the
actual finished pencil rather than the ingredients that go into making it, and
LF1 means the product is 100% lighfast (LF2 is 80%) and will not fade, under museum conditions, for 100 years. So when Derwent call something
Lightfast, they really mean it.
But
what else makes them so good? Well, the oil based cores come in a huge range of
100 colours which are fully blendable on the page. They can be sharpened to a
point for the most intricate of detail but are just soft enough for a smooth
laydown of vibrant colour. The tactile 8mm barrel is made from natural Maple
meaning it looks and feels as good as it works. It’s even Vegan friendly!
100
colours and 100% brilliant!