Jacques HerbinVert De Gris from the Standard collection is a deep blue grey ink with low shading. It dries in 20 seconds in a medium nib on Rhodia and has an average flow. Jacques Herbin ink is made in France. For fountain pens, rollerballs, glass, and dip pens• Non toxic and pH neutral• Lightfast - Fast drying• Water based, all natural dyes, flows smoothly International standard, "short". Snap in cartridges fit most fountain pens (Excludes Sheaffer, Parker, Lamy, A.T. Cross, Pilot/Namiki, Sailor, Platinum and Aurora) Brand Jacques Herbin Ink Name Vert De Gris Country of Origin France Color Blue Dry Time 20 seconds in a Pilot VP medium nib on Rhodia Flow Average Shading Low Sheen No Shimmer No Limited Edition No Water Resistance Low Iron Gall No Pigmented No