J.Herbin fountain pen cleaner 50ml Cleaner made from natural products, to disinfect all your fountain pens, rollerballs and pumps simply and quickly. If you haven't used your pen in a while or if it is dirty, this product is ideal for maintenance. Biodegradable. How to use: - Pour some cleaner into an empty cup or bottle. - Submerge your pen and suck up a little liquid with its pump, previously emptied of ink (if you use cartridges, proceed in the same way. Suck up a little liquid by pressing the cartridge, then write with your pen). li> - Leave to soak for 5 minutes - Rinse well with cold water and wipe with a dry cloth. Quantity: 50 ml. Brand: J.Herbin.