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 Purple colour. A deep, rich purple, almost a dark blue, it is a purple that does not seem out of place on business documents. The ink flow is fast; therefore, this is suggested for pens that have a slower ink flow or a fine nib. The drying time is about 10 to 15 seconds depending on the quality of the paper. 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.