The poultices were allowed to rest on stained surfaces for a 10 min, 20 min, 30 min and 15 hours. A single cleaning application was performed per cleaning regime. In order to mininmize the rate of evaporation and contact with the external atmosphere, wet poultices were covered with a Mylar R film for the duration of the treatment. Following application, paper pulp was removed and the treated surfaces were rinsed by sprying with distilled water.
给这篇翻译加备注
kireçtaşı yüzeylerinden pas lekelerini kaldırmanın yolları ile ilgili makalenin bir bölümüdür.
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