Part two of the Salt Printing experiment is to make a light sensitive solution that will coat the already sized paper. This is achieved by using Silver Nitrate. This chemical has to be respected, if used inappropriately Silver Nitrate can burn and if it comes into contact with the eyes in the worst cases it can blind. It is advisable to wear safety equipment such as surgical gloves and protective eye wear.
To make the light sensive solution you require 100ml of distilled water, 10g of silver nitrate and 5g citric acid. Mix the silver nitrate with half of the water which has been warmed. Poor this into a dark medicine bottle. Mix the citric acid in the remaining water and carefully pour into the medicine bottle. The solution is ready to use. The citrc acid in the solution lowers the ph of sensitizer and acts as a preservative.
10g of silver nitrate
Light sensitive solution
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