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 that has a vibrant tone of Copper colour. This is different coloured ink with a combination of light brown with a greenish under tone, which looks like copper which has developed a patina. This makes it a very unique ink. It is a good shading ink as it has both the lighter and the darker brown in it. If you are looking for something different go for it. The drying time is about 5-15 seconds depending on the nib used. 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.