This list comprises carmine and crimson lake, Indian red, maroon lake, red lake, rose lake, rose pink, Turkey red lake and Venetian red. Since the advent of the numerous cold water paints the demand for red colors in water for use in distemper or fresco work has become very limited, and is confined to red lake, rose lake and rose pink that are used by grainers, and to Turkey and Venetian reds used by decorators.
Carmine or Crimson Lake, dry pigments similar to those used in oil color lines simply pulped in water by running through mixer and mill and put up in glass jars is the usual custom.
Indian Red. - One shade, the deep, is sufficient, and 80 pounds pigment mixed with 25 pounds water and run through mill will yield 100 pounds paste.
Maroon Lake. - Color makers supply a pigment of this color, that is, non-bleeding, and may be mixed at the rate of 70 parts by weight of pigment and 35 parts by weight of water, and when run through a mill will yield 100 parts by weight of paste.
Red Lake should be of the permanent type, and it is best to mix 60 parts by weight of alizarine red lake with 50 parts of water, run through mill, until fine. Yield 100 parts paste.
Rose Lake and Rose Pink may be of same type as those described in the oil color list. For the first named about 60 parts pigment and 45 parts water, and for the second 68 parts pigment and 37 parts water will be required for 100 parts of paste.
Turkey Red Lake is usually offered in two shades, light and dark, either of them being of the scarlet azo color type described under oil colors as carmine substitute, and either shade will require about 70 parts of dry color and 35 parts of water to make 100 parts of paste.
Venetian Red in this line should not be of too deep a shade so as not to show up purplish when mixed with distemper color base. Should be more on the terra cotta effect, but, of course, much richer. Does not require to contain over 40 per cent in sesquioxide of iron; 75 parts by weight of pigment and 30 parts of water will yield 100 parts of paste in water.