S450. Walnut Crystals Jar
This item contains two 1-ounce jars, each with the appropriate amount of crystals. Simply fill it with warm water and mix. You have ready-made walnut ink without the hassle of measuring! You can use the extra crystals from the second jar to make the ink darker. Non-waterproof.
Provides some great introductory options. The first pre fill makes it easy to get a good baseline for what the ink is supposed to be like while having the second container allows an opportunity to experiment with concentration or use as an additive.