[JOSarff]

Chris,

Another thing I have found is that AgNO3 is building up in the stainless needle on the silver side. Actually it almost looks like metallic silver. I don't know if this is a conditioning effect or I should clean it out.

I am thinking about a smaller than 18 gauge needle and tubing in order to get a higher pressure jet but I don't think it will make a night and day difference to the results. Maybe your design idea is what I am really looking for. But, how do you attach the tubing to the needle?

-- Jason

Jason:

I think it's just Silver plating onto the stainless steel of the needle. If the Silver deposit in the needle is reducing the flow then I would suggest soaking the needle in a silver solvent such as Sodium or Ammonium Thiosulfate (Fixer).

There are adapters made that are female luer-lok to tubing and tubing to male luer-lok. The male luer-lok connection is where you attach the needle and place in the kettle. These may be available from the Vet supply Co. Chris mentioned earlier or eBay..

All the best,

Joe