But the likes of Hero 234 ink – a really cheap Chinese nanoparticle ink – i.e. Most of the inks did great in the test, and put my mind at rest – I was sure that the ISO-rated lightfast inks like R&K Dokumentus would ace it, as would probably FW, Sketchink and traditional indian inks. I guess this is also now a dampness test – and that some inks also have a problem with damp. Luckily I checked it last year and can confirm the results are the same. That worked well until the damp got to the July one – the windows get damp here in winter – and slightly opened it, as you can see. This was on 170gsm cartridge paper from Artway, and I folded it over with cardboard between and sealed the covered part with tape sandwiched between that and another piece of cardboard! I didn’t have space to test that in the Classmates ink. I did a wash of each ink in case that affected the results – sometimes dilution can affect lightfastness, at least in watercolours so I wanted to test that in each ink. So here are the results – the left side was exposed to light for 5-6 months and the right side folded and covered. Left side exposed, right side covered.įrom top to bottom: R&K Sketchink ‘Marianne’, R&K Dokument, Classmates Drawing Ink, R&K Salix, Daler FW ink black Left side exposed, right side covered.įrom top to bottom: Hero 234, Jackson’s Indian Ink, R&K Sketchink Lotte, W&N Liquid Indian, W&N Indian Ink, R&K Scabiosa, Diamine Registrar, Koh-I-Noor Black, Koh-I-Noor Blue Ink Lightfastness Test – 8th July 2020 – 8th Jan 2021. Ink Lightfastness Test – mid June 2020 – 8th Jan 2021.
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