These sample vials come in very handy when I pour my same-ink samples together. I put my samples of Pilot Iroshizuku Kon-Peki in one vial, and the J. Herbin 1798 Anniversary Collection Kyanite du Népal into another—I had to buy several samples because these inks were out of stock in the full bottle format. The caps seal well and I’ve seen no ink seepage into the threads after shaking the vials vigorously or leaving them upside down overnight. The 10 ml version of the vial is easy to hold, uncap and cap.
