I don’t have that much ink from Platinum but this is one of the ink cartridge I would buy. Not just because it’s discontinued (oh well, they still have Violet but the formula is different), it’s a color associated with my fountain pen memories. Anyway…
The cartridge I have is an old-new-stock that partially evaporated already. The color is denser than what I remembered. The color shading is limited at the same time the saturation is pretty good. Drying time is also short, less than 10 sec on UCCU and less than 5 sec on DoubleA (with Platinum medium nib)
With water resistant test (drip test), the color didn’t fade out completely but it might happen if soaking in water for a longer period of time.
CP value: ?? (since it’s discontinued)