Two or three of them are iron-gall but by no means all are...
Writing Ink
Schreibtinte, Sorte 40
With this range that contains 18 tones of writing inks for fountain pens and quills, Rohrer & Klingner continues an old tradition of ink production. Apart from classical tones (including two iron gall inks), several new colours are available, that have been developed for the primary purpose of calligraphy. On a traditional basis, the inks are produced with inter alia modern raw materials.