New Permanent Fountain Pen Ink by Dr. Ph. Martin's
Last month, when I visited Adamstown Art, I was given a bottle of Dr. Ph. Martin’s Ocean Fountain Pen Ink to test out. I immediately put some in my standard writing pen – TSWBI Eco and then in my favourite sketching pen – Sailor de Mannen 55-degree Fude pen. The Eco is the most reliable...
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