"A" group is a dye-based ink group. Transparent, saturated, and bright (except for A01, which tacitly belongs to the "N" category but is deliberately classified as an "A" group as part of the main palette).
The unique technology of art inks that is based on an eco-solvent.
Inks do not contain any substances that can harm your health. Light fastness of the dyes and pigments in the inks is 7-10 at the scale of 1-10 (where 1 is the minimum level and 10 is the maximum). The inks are professional artistic, concentrated, color endurable, multi-purpose, well-mixed. Inks perfectly cover any synthetic smooth surface. Dry out fast. Require the dilution before use. The inks perfectly work together both with isopropyl alcohol and ethyl alcohol. When working with alcohol, make sure it doesn't contain glycerin and that the alcohol concentration is not less than 96%. Drying time without any intervention is 2-5 minutes. After ink dries out, it is recommended to cover the image with several layers of aerosol acrylic varnish for image safekeeping. The inks best work with a blending solution (you don't only dilute the paint but also obtain middle fixation degree of the image surface; it saves the varnish, time, and provides comfortable work).
Storage conditions, expiration dates: can be stored up to 36 months before opening and 6 months after opening.