Here it is the 'spectrum' of a Waterman Blue-Black ink blot on a filter paper, after one hour, more or less:
Why this green tone in a BB ink? It is supposed to exist only blue and gray/black tones
Full Version: A Waterman BB ink blot
Hi
Here it is the 'spectrum' of a Waterman Blue-Black ink blot on a filter paper, after one hour, more or less:
Why this green tone in a BB ink? It is supposed to exist only blue and gray/black tones
Here it is the 'spectrum' of a Waterman Blue-Black ink blot on a filter paper, after one hour, more or less:
Why this green tone in a BB ink? It is supposed to exist only blue and gray/black tones
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