Can this range be used with the conventional Windsor and Newton Oil based paints?
Alkyd oil colours are compatible with traditional oils, mediums, mineral spirits, and turpentine, as well as with other alkyds. Alkyd oil colours also can be used to speed the drying time of regular oil paints.
Griffin Alkyd colour can be mixed with traditional oil paints, but it will speed down the drying time. They should be mixed on the palette but not alternative layers of Griffin Alkyd and oil paint because of the different drying times.
Alkyd dries to a hard paint film and has good resistance to physical wear and weathering. These dry to a more even reflective surface than traditional oils
It is ideal for use on wood, glass, metal and porcelain and is Water resistant.
Oil painting rules
Fat over lean – (flexible over less flexible) when oil colour in layers each successive layer must be more flexible than the one underneath. This rule is maintained by adding more medium – Liquin to each successive layer
Thick over thin – thick layers of oil colours are best applied over thin layers
Due to the difference flexibility, never use griffin alkyd on top of conventional oil colours unless the oil colour is completely dry – 6-12 months), Conventional oils may be used over alkyd
Mediums - liquin is an alkyd based medium combine synthetic alkyd resins with solvents to maintain the drying process.
I hope this information is of use to you