K4-PT-K - $58 K4 MATTE BLACK ARCHIVAL EPSON K3 COMPATIBLE INK
EB6-PT-K - $100 EB6 V1.1 CARBON MONOTONE MATTE BLK (EBONI)
The first of these used to be the designation for “Matte Eboni Black”, a pure-carbon black ink that was the primary black ink for Paul Roark’s formulations. The second is now identified as Eboni, albeit V1.1.
The difference in price might be startling, but there is no uncertainty that this is supposed to replace Eboni. Time will tell whether we agree with that, and we cannot expect the world to stand still while we tweak our printing systems.
My confusion is about K4-PT-K. That used to be the product number for Eboni (V1.0). What is it now? The website says nothing at all, although by implication it must still be a pigment ink. My understanding is that one of MIS's suppliers changed something and so Eboni V1.1 became necessary. If that is correct, then Eboni V1.0 simply cannot be made any longer, so K4-(size)-K either is or will soon become something else (or dropped from the catalogue).
Does anyone know what K4-PT-K actually is???
Myron