Procion Fast H-EXL ternary
combination is the latest offering from Germany-based DyStar Textilfarben GmbH & Co.
The Procion Fast H-EXL ternary combination — comprised of metal-free Procion Fast Red H-EXL,
Procion Fast Yellow H-EXL and blue formazan dye Procion Fast Blue H-EXL — was developed for hot
dyeing processes and offers a range of pale to medium shades with high light- and wet
lightfastness. The company reports the colors are easily reproduced and reliable because of the
similar migration, substantivity and reactivity properties of the dyes, which can be combined with
other dyes in the Procion range. The dyes also meet key specifications of the England-based Marks
& Spencer chain of retail stories.