→  IONTOSORB BLUE 2 is a sorbent with fixed Reactive Blue 2 (Cibacron^© Blue 3GA)

 →  IONTOSORB RED is a sorbent with fixed Reactive Red 120 (Procion^© Red HE3B)

 →  IONTOSORB BLUE 4 is a sorbent with fixed Reactive Blue 4 (Reactive Blue MRB ) ^TC

 →  IONTOSORB GREEN 5 is a sorbent with fixed Reactive Green 5 (Reactive Green H4G) ^TC

 →  IONTOSORB GREEN 19 is a sorbent with fixed Reactive Green 19 (Reactive Green HE4BD) ^TC

 →  IONTOSORB GREEN 19A is a sorbent with fixed Reactive Green 19A (Reactive Green HE4BD) ^TC

 →  IONTOSORB YELLOW is a sorbent with fixed Reactive Yellow 86 (Reactive Yellow M8G) ^TC

 →  IONTOSORB BROWN is a sorbent with fixed Reactive Brown 10 (Reactive Brown M4R ) ^TC

^TC is a symbol of the firm Textile Colour & Chemical, India (http://www.textilecolour.com)
(Many thanks to the firm Textile Colour & Chemical, India for kind explanation of chemical difference between Reactive Green 19 and Reactive Green 19A).