SAQ Inks are water-based screen printing inks for paper, and poster printing. They are also know as poster inks. As the name suggests, water-based inks are those which can be dissolved in water. Such inks use water as the main component to carry the color pigment.
SAQ inks are aqueous screen printing inks for use on paper, card stock, and canvas. They are highly concentrated colors.
From the product label:
Ecologically sound - water base (Matt Finish)
An aqueous silk screen printing ink for use on paper or poster stock. Highly concentrated base colors can be mixed with a transparent medium. Excellent durability and brilliance of shade. USE WITH HOLDEN’S PHOTO EMULSION 250 or T-1000. May be used with any mesh. Clean up with cold water.