Well, since I am the Mad Dutchman, I can unashamedly admit to having a collection of 172 inks, of which 160 are in bottles (and I may hav =e several of some), 7 in cartridges, and 12 in vials. to a total of 9.6 litres

9.
Here is the list:
<table border=2 cellpadding=1 cellspacing=0 width=407>
<col width=119>
<col width=216>
<col width=72>
<tr height=38>
<td height=19>Brand</td>
<td width=216>Name</td>
<td width=72>Colour</td>
</tr>
<tr height=19>
<td height=19>AM</td>
<td>Bordeaux</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>AM</td>
<td>Tobacco</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>AM</td>
<td>Turquoise</td>
<td>turquoise</td>
</tr>
<tr height=19>
<td height=19>AM</td>
<td>Verde</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Caran d'Ache</td>
<td>Amazon</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Caran d'Ache</td>
<td>Blue Night</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Caran d'Ache</td>
<td>Blue Sky</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Caran d'Ache</td>
<td>Carbon</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Caran d'Ache</td>
<td>Caribbean Sea</td>
<td>turquoise</td>
</tr>
<tr height=19>
<td height=19>Caran d'Ache</td>
<td>Grand Canyon</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Caran d'Ache</td>
<td>Saffron</td>
<td>orange</td>
</tr>
<tr height=19>
<td height=19>Caran d'Ache</td>
<td>Storm</td>
<td>purple</td>
</tr>
<tr height=19>
<td height=19>Caran d'Ache</td>
<td>Sunset</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Altrosa</td>
<td>pink</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Aubergine</td>
<td>purple</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Bordeauxrot</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Gelborange</td>
<td>orange</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Havanna</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Indigoblau</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Karminrot</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Kupferbraun</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Maigrün</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Minttürkis</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Mohnrot</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Moosgrün</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Nebelgrau</td>
<td>grey</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Olivgrün</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Patinagrün</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Petrol</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Rotbraun</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Rotorange</td>
<td>orange</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Rubinrot</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Saharagrün</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Sepiabraun</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Smaragdgrün</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Tannengrün</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Terra di Siena</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Türkisgrün</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>De Atramentis</td>
<td>Zementgrau</td>
<td>grey</td>
</tr>
<tr height=19>
<td height=19>Delta</td>
<td>Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Delta</td>
<td>Brown</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Diamine</td>
<td>Dark Brown</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Diamine</td>
<td>Prussian Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Diamine</td>
<td>Sepia</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Les Subtiles - Encre Ambre</td>
<td>orange</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Les Subtiles - Encre Bleue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Les Subtiles - Encre Verte</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Les Subtiles - Encre Violette</td>
<td>purple</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Les Subtiles - Encre Rouge</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Ink for Man - Bleu Nuit</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Ink for Man - Perle des Encres</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Ink for Man - Poussičre de Lune</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Specialty Inks - Encre Invisble</td>
<td>pink/blue</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Ambre de Birmanie</td>
<td>yellow</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Bleu Myosotis</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Bleu Nuit</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Bleu Pervenche</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Bouquet d'Antan</td>
<td>pink</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Bouton d'Or</td>
<td>yellow</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Cacao Du Brésil</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Café des Îles</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Diabolo Menthe</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Gris Nuage</td>
<td>grey</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Lie de Thé</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Lierre Sauvage</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Orange Indien</td>
<td>orange</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Perle Noir</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Poussičre de Lune</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Rose Cyclamen</td>
<td>pink</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Rose Tendresse</td>
<td>pink</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Rouge Caribier</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Rouge Opéra</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Terre de Feu</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Vert Olive</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Vert Pré</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Vert Réséda</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Herbin</td>
<td>Violette Pensée</td>
<td>purple</td>
</tr>
<tr height=19>
<td height=19>Lamy</td>
<td>Black</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Lamy</td>
<td>Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Lamy</td>
<td>Blue Black</td>
<td>blue black</td>
</tr>
<tr height=19>
<td height=19>Levenger</td>
<td>Cocoa</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Montblanc</td>
<td>Burgundy</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Montblanc</td>
<td>Permanent Blue Black</td>
<td>blue black</td>
</tr>
<tr height=19>
<td height=19>Montblanc</td>
<td>Racing Green</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Montblanc</td>
<td>Season's Greetings</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Montblanc</td>
<td>Sepia</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Black</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Blue Black</td>
<td>blue black</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Burgundy</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Cayenne</td>
<td>orange</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Empire Red</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Firefly</td>
<td>yellow</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>FPN Galileo Manuscript Brown</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td x:str="Green ">Green<span
style='mso-spacerun:yes'> </span></td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Kiowa Pecan</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>La Couleur Royale</td>
<td>purple</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Legal Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Ottoman Azure</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Ottoman Rose</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Red Black</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>The Sun Never Sets</td>
<td>orange</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Saguaro Wine</td>
<td>purple</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Socrates</td>
<td>purple</td>
</tr>
<tr height=19>
<td height=19>Noodler's</td>
<td>Victoria's Royal Mint</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Omas</td>
<td>Extra Black</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Omas</td>
<td>Sepia</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Omas</td>
<td>Vespucci Red</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>Parker Penman</td>
<td>Ebony</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Parker Penman</td>
<td>Emerald</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Parker Penman</td>
<td>Mocha</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Parker Penman</td>
<td>Saphire</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Parker Quink</td>
<td>Black</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Parker Quink</td>
<td>Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Parker Quink</td>
<td>Blue Black</td>
<td>blue black</td>
</tr>
<tr height=19>
<td height=19>Parker Quink</td>
<td>Washable Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Pelikan 4001</td>
<td>Blue/Black</td>
<td>blue black</td>
</tr>
<tr height=19>
<td height=19>Pelikan 4001</td>
<td>Brilliant Brown</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Pelikan 4001</td>
<td>Brilliant Black</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Pelikan 4001</td>
<td>Royal Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Pilot</td>
<td>Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>2003 DC Super Show Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Avacado</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Black Cherry</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Black Magic Blue</td>
<td>blue black</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Blue Suede</td>
<td>teal</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Burgundy Mist</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Buttercup</td>
<td>yellow</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Chocolat</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Copperburst</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Sherwood Green</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Sonic Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Private Reserve</td>
<td>Spearmint</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Roher & Klingner</td>
<td>Cassia</td>
<td>purple</td>
</tr>
<tr height=19>
<td height=19>Roher & Klingner</td>
<td>Old Bordeaux</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Roher & Klingner</td>
<td>Old Gold Green</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Roher & Klingner</td>
<td>Verdigris</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Rubinato</td>
<td>Blu</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Rubinato</td>
<td>Nerissimo</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Sailor Jentle</td>
<td>BBK - Blue Black</td>
<td>blue black</td>
</tr>
<tr height=19>
<td height=19>Sailor Jentle</td>
<td>BE - Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Sailor Jentle</td>
<td>BK - Black</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Sailor Jentle</td>
<td>BN - Brown</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Sailor Jentle</td>
<td>GN - Green</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Sailor Jentle</td>
<td>GY - Grey</td>
<td>grey</td>
</tr>
<tr height=19>
<td height=19>Sailor Jentle</td>
<td>RBN - Red Brown</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Sheaffer Skrip</td>
<td>Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Sheaffer Skrip</td>
<td>Brown</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Sheaffer Skrip</td>
<td>Burgundy</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Sheaffer Skrip</td>
<td>Grey</td>
<td>grey</td>
</tr>
<tr height=19>
<td height=19>Stipula Calamo</td>
<td>Blu della Robbia</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Stipula Calamo</td>
<td>Rosso Fiorentino</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>Stipula Calamo</td>
<td>Terra di Siena</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Stipula Calamo</td>
<td>Verde Muschiato</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Swisher</td>
<td>Midnight Black</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Swisher</td>
<td>Cocoa</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Swisher</td>
<td>North Sea Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Swisher</td>
<td>Nantucket Blue</td>
<td>turquoise</td>
</tr>
<tr height=19>
<td height=19>Swisher</td>
<td>Maroon</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Swisher</td>
<td>Intense Red</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>Swisher</td>
<td>Apricot Orange</td>
<td>orange</td>
</tr>
<tr height=19>
<td height=19>Swisher</td>
<td>Emerald</td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Visconti</td>
<td>Burgundy</td>
<td>burgundy</td>
</tr>
<tr height=19>
<td height=19>Visconti</td>
<td>Sepia</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Visconti</td>
<td>Turquoise</td>
<td>turquoise</td>
</tr>
<tr height=19>
<td height=19>Waterman</td>
<td>Black</td>
<td>black</td>
</tr>
<tr height=19>
<td height=19>Waterman</td>
<td>Blue Black</td>
<td>blue black</td>
</tr>
<tr height=19>
<td height=19>Waterman</td>
<td>Florida Blue</td>
<td>blue</td>
</tr>
<tr height=19>
<td height=19>Waterman</td>
<td x:str="Green ">Green<span
style='mso-spacerun:yes'> </span></td>
<td>green</td>
</tr>
<tr height=19>
<td height=19>Waterman</td>
<td>Havana</td>
<td>brown</td>
</tr>
<tr height=19>
<td height=19>Waterman</td>
<td>Red</td>
<td>red</td>
</tr>
<tr height=19>
<td height=19>Waterman</td>
<td>South Seas Blue</td>
<td>turquoise</td>
</tr>
<tr height=19>
<td height=19>Waterman</td>
<td>Violet</td>
<td>purple</td>
</tr>
</table>
Warm regards, Wim