Mountboard colour fastness

[GeoSpectrum]

I pulled out some blue mountboard today and it needed a bit of dust cleaning off, I used a conservation cleaning pad designed for cleaning paper etc. The photograph shows that the pad took off some of the colour and this with only very light cleaning. I was quite surprised, thinking the colour should be fast on a well know leading brand. Is this normal? I'll try a few more colours tomorrow to see if I get the same.

IMG_2539.JPG (1.07 MiB) Viewed 7443 times

[IFGL]

I think we should play guess that colour, I am going for M8563 Belgium blueberry waffle.

[JohnMcafee]

That you can easily rub the coloured surface fibres from the face of a board made of compressed fibre should not be worrying or unexpected.

This has nothing to do with colour fastness.

[Graysalchemy]

Is that one of those pads with rubber particles in the bag? If so it's not surprising it's rubbed of the colour.

[David McCormack]

Looks like your board didn't pass the crock test!

1.53. Abrasion – (CROCK Test, BS1006 X 12.1978) Alternatively, an empirical and subjective test is to
apply one pound (453gm) of pressure, rub the surface of the board back and forth with a white muslin
cloth about ten times. Nothing should transfer or rub off.

According to the FATG mountboard standards only conservation and museum board have to pass the crock test, standard board doesn't.

[prospero]

I call them pads Magic Sausages.

Because they are sausage shaped and also magic.

[Steve N]

It's not going to make much difference once framed and behind glass, once glazed it's not going to be rubbed with a white muslin
cloth about ten times