These days the possibilities of paint toning are completely different than they were decades ago, when the buyer had to select between 10 to 20 shades. Now each manufacturer has their own tone chart that can be used to tint the paint in more than 30 000 different shades.
To make the selection easier, the tone charts have been developed in accordance with the painted surface and the type of paint, for example, interior work tone chart, wood coating and varnish tone charts, floor paint tone charts, staining tone charts, exterior work tone charts, wood façade tone charts, etc. The range of colours available for interior work is much broader than for exterior work, since the impact of weather conditions does not need to be taken into account, and the choice of available pigments is much wider. For exterior finish, paint durability and resistance to weather conditions is very important.
The colour tones included in tone charts are separated in A and C base tones. Base A tones are light, while base C tones are dark.
Tinted paints are produced from white (base A) or clear (base C) base paint, to which tinting pastes are added to obtain the required shade of colour. When selecting a base A tone (for example, F157), a paint can with the designation “A” (see the label) should be used for tinting. The base designation can also contain other combinations of letters, for example, products intended for masonry have the letters LA, LC, etc. If the base designation does not appear on the product, that means that the product is not tintable or has already been industrially tinted (grey, brown, etc.).
Almost all products can also be tinted according to the international standards RAL and NCS.
During tinting the selected tone number is entered into the computer and the can of paint is placed in the tinting device that adds the tinting pastes according to the selected recipe. Afterwards the can of paint is placed in the paint mixer where the mixing of the tinting paste and the paint allows obtaining the shade that matches the tone chart. The tinting system allows obtaining the exact shade of colour repeatedly.