Abstract
The influence of PVP as well as the influence of the excess of silver ions, and the quantity of silver iodide in the crystal phase, on the physical ripening of Lipmann’s emulsions are investigated. It is established that PYP favours the formation of ultrafine emulsions. Its inhibitory influence on physical ripening makes it possible to regulate and equalize the activity of the gelatins, used in the synthesis of Lipmann’s emulsions.Emulsions with a resolving power of 3200 1/mm satisfactory sensitivity and edge sharpness are synthesized.
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