JS Gutenberg colour

Conditioning:
All the conditioning actions are processed by hand to assure a systematical quality control test.
Conditioned in 60ml tubes and 200ml cans.

A few words about the history of Joop Stoop inks:

At the end of the 80’s Joop Stoop developed its own etching ink thanks to the help of the head of the world’s largest printing ink manufacturer. 
The modern organic pigments we use have a much higher covering power than metal based pigments used in the past. In addition they are more lightfast and give a rich color strength (Colour fastness is measured on a woolscale from 1 to 8, 8 having the highest color fastness possible). Above all these modern pigments are much safer healthwise and for the environment.
The secret to obtain the best viscosity can be attributed to our own heated varnishes ( common vehicle composed of natural oils such as linseed and soya oil). Once combined with the pigment ink can be ground up to three times to fulfill our standards for the fine grain < 10µm.
Our Dutch product  is made by a team of highly-qualified specialists who perform in-coming checks on the purchased materials in a modernized laboratory to guarantee the quality of the finished product JS Gutenberg Professional etching ink.

Composition and light fastness:

Lemon yellow PY98 - 6-7/8
Orange PO20 - 6-7/8
Warm red PR2 - 6-7/8
Madder lake PR48:4 / PY74 / PB7 - 6-7/8
Magenta PR122 - résistance 6-7/8
Violet blue PV23 / PV15:3 - 8/8
Prussian blue PV15:4 / PV23 / PB15:3 / PB7 - résistance 8/8
Cobalt blue PB15:4 / PV23 / PB7 - 8/8
Green PG7 - 8/8
Chrome oxide green PG7 / PB7 / PY74 - 8/8