Private Reserve is a maker of superior quality ink for fountain pens. All private reserve inks are fast drying, non-clogging and non fading that provides excellent coverage and a smooth flow on rough papers. It has a neutral pH which helps to write even on non acidic papers. This beautifully designed ink bottle from Private Reserve has a vibrant tone of Ebony Green colour. The Private Reserve Ebony Green is among the quickest drying inks to date. It is supersaturated, lubricated and with an unusual sheen. The ink performs differently on different types of paper but the line is rather smooth and it doesn't tend to feather. Waterproofness is decent. The dry time is about 5-7 seconds, best used on a white paper versus the ivory colour as the white paper seems to bring out a little more green on the white background. The ink is not waterproof. The bottle contains 60 ml of ink and can be used with any kind of fountain pen. The information stated here is only indicative. The drying time, the saturation and the final colour on the paper may vary based on the quality of paper used, the size of the nib and the make of the nib. All inks are made in the USA.