Octopus Document Inks

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Document Inks for fountain pens Document inks with ISO 12757-2 certificate in 9 colours The development of our document inks for fountain pens took a total of 12 months. The focus was on selecting and testing the pigments to be used and their behaviour in the fountain pen, the flow properties during the writing process and the use of various additives to achieve the properties required for DIN ISO certification. The result is document-proof inks for fountain pens that differ significantly from inks already available on the market. Ink development The 9 different colours of Octopus Fluids "Document Inks" remain bright and luminous due to their pigmentation and adhesion promoters used. Conventional documentary inks often have only a very low pigment content. Most of their colouring is due to the additional dyes they contain. Dyes have the property of not being light-stable and therefore fade sooner or later. In the case of these document-fast inks, only the small amount of remaining pigments ensures document fastness, but the colour strength is lost. The Octopus Fluids "Document Inks", however, are more resistant to UV rays and do not lose any of their radiant colour strength even after a long time. We have not added any dyes and have used only the finest pigments. This ensures that writers can present their work over the long term without worrying about the colours fading or becoming illegible. Certification of the document inks The DIN ISO certification of our document inks was carried out by the independent Paper Technical Foundation (PTS). As part of the certification work, the document inks were tested for eraser resistance, ethanol resistance, hydrochloric acid resistance, ammonia resistance, bleach resistance, water resistance and light fastness. The tested fountain pen inks meet the requirements of the above-mentioned properties according to DIN ISO 12757-Part 2: 1999 (see PTS test report no. 45.240 dated 06.02.2023) . In Germany, the inks thus meet the requir