Re: Cleaning glass for dryplates
I don't believe what you see on the rinsed glass is sodium carbonate. It gets rinsed off glass surface easily. I suspect the white stuff comes from elsewhere. For best cleaning, I suggest to add a bit of PhotoFlo 200 or dishwasher rinsing agent (not detergent) to the carbonate solution and rinsing water. If you still get white stuff, try distilled water for final rinse. If you still get white stuff, try wiping the surface with DRY kimwipe or lens cleaning tissue. If this doesn't help, I think you are getting inferior glass stock. Some glasses don't look good once thoroughly cleaned. However, for dry plates, you don't need that level of glass. Most important is to degrease the surface and ensure good adhesion of emulsion.
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