One of the joys of attending pen shows is discovering new products. At Wagner’s year-end event, I picked up a type of paper called Null Refill. It wasn’t the first time this paper was sold at a pen show I attended, but for some reason, I had missed it until now. Null Refill is based on a synthetic paper called Yupo, known for its water resistance. Because of this property, it is commonly used for e.