The bottle contains 1 fluid ounce or 30 ml.
Pelikan 4001 Bottled Ink for Fountain Pens, Brilliant Black, 30ml, 1 Each (301051) : Office Products
Pelikan Drawing Ink, 518 Black Fount India, 1 Ounce Bottle (221143) : Fine Writing Instruments : Arts, Crafts & Sewing
PELIKAN INK - Fount India document-proof Black 30 ml £9.99 - PicClick UK
Pelikan 4001 Ink Bottle - Violet - 62.5ml
Pilot ink bottle 30ml Blue Black : Office Products
VINTAGE PELIKAN FOUNT India Schwarz Bottled Ink $25.39 - PicClick
Pelikan Fount India Black Fountain Pen Ink 1 Ounce 30 ml Bottle 221143
Other Collectible Pen Accs, Pen Accessories, Pens & Writing Instruments, Collectibles - PicClick
Pelikan Drawing Ink, 518 Black Fount India, 1 Ounce Bottle (221143) : Fine Writing Instruments : Arts, Crafts & Sewing
Pelikan 4001 Bottled Ink for Fountain Pens, Brilliant Black, 62.5ml, 1 Each (329144) : Pelikan Ink Cartridges : Office Products