Swarovski is adding a brush and soap. I assume to use water to clean it. Mr van Ginkel has never an issue with Swarovski. He probably does not use them.NZbinodude post 1,
In my addition to my post 30 I have another question: what did you decide to use a stream of tap water over the NL? I ask it, since if you had a contamination with sand particles you will increase problems if they are trapped in a narrow space as there are some in the focussing mechanism of the NL.
Gijs van Ginkel