Mixing Ratios
As little as 10% MM31 Open Medium to the paint, will lengthen the working time, allowing satisfying, smooth blends. By choosing to use smaller amounts of the medium, the blending time is increased, but the drying time is not drastically increased. However, a larger amount of Open Medium will dramatically increase the working time of the paint. The maximum retardation of drying time is reached with an equal mixture of paint to medium. Beyond this point, any further additions of MM31 Open Medium will result in minimal increases in drying time but may reduce the water fastness of the dried paint. However larger proportions (more medium than paint) will give transparency and will aid effective layering.
As well as allowing more time to blend on the surface, paint mixed with MM31 Open Medium will stay fresh on the palette for several hours, depending both on the weather conditions and the quantity of MM31 Open Medium used. Easy to use, MM31 Open Medium will allow the reworking of areas of a painting in a way not previously possible.
The gel-like consistency of MM31 Open Medium allows it to remain in place on the palette, therefore it is suitable to be brush-mixed while painting, as well as to be pre-mixed on the palette.
Safety Data Sheet (SDS)
To view or download a copy of MM31 SDS, please CLICK HERE (201kb)