ISO 18917:1999 摄影技术-已加工的摄影材料中残留的硫代硫酸盐及其它相关化学残留物的测定方法 碘-直链淀粉法,亚甲蓝法和硫化银法.

标准编号：ISO 18917:1999

中文名称：摄影技术-已加工的摄影材料中残留的硫代硫酸盐及其它相关化学残留物的测定方法 碘-直链淀粉法,亚甲蓝法和硫化银法.

英文名称：Photography — Determination of residual thiosulfate and other related chemicals in processed photographic materials — Methods using iodine-amylose, methylene blue and silver sulfide

发布日期：1999-06

标准范围

1.1本国际标准规定了测定残留硫代硫酸盐和其他处理过的照相材料中的相关化学物质。1.2本国际标准适用于经过最终处理的卤化银/明胶产品硫代硫酸盐固定浴和水洗。本国际标准不适用于稳定的黑白产品、热处理薄膜或速溶型产品。本国际标准中给出的程序测定残留硫代硫酸盐，银密度法测定残留相关聚硫酸盐物质也是。在规定的限制范围内，通过本国际标准中的程序进行的测量可以在附录A和B中，与处理照片的图像稳定性相关。1.3两面有感光层，或一面有感光层的胶片或版侧和反面的明胶背衬层可含有约两倍的硫代硫酸盐作为仅在一侧具有涂层的样品进行处理。这种情况适用于残留的材料硫代硫酸盐通过碘-直链淀粉或亚甲蓝方法测定。注:报告此类结果的方法见图1示例2。1.4碘-直链淀粉可用于纤维基纸、树脂涂布纸、薄膜和板。是方法用于含有掺入显影剂的胶片和纸张。1.5亚甲蓝法可用于纤维基纸、树脂涂布纸、薄膜和板材，但不能使用含有掺入显影剂的薄膜和纸张。1.6硫化银密度法测量硫代硫酸盐、多硫酸盐和所有其他残留化学物质在试验条件下与银离子反应形成银“染色”的加工产品中。1.7方法、范围等的总结见附件B。

1.1 This International Standard specifies test methods for the determination of residual thiosulfate and otherrelated chemicals in processed photographic materials.1.2 This International Standard applies to silver halide/gelatin products that have been processed with a finalthiosulfate fixing bath and a water wash. This International Standard does not apply to stabilised black-and-whiteproducts, thermally processed films, or instant-type products. The procedures given in this International Standardmeasure residual thiosulfate, and the silver densitometric method measures residual related polythionate materialsas well. Measurements carried out by the procedures in this International Standard may, within the limitations statedin annexes A and B, correlate with the image stabilities of processed photographs.1.3 Film or plates with photographic-sensitive layers on both sides, or with a photographic sensitive layer on oneside and a gelatin backing layer on the reverse side, may contain approximately twice as much thiosulfate afterprocessing as samples having a coating on one side only. This situation will be true for materials for which residualthiosulfate is determined by the iodine-amylose or methylene blue procedures.NOTE For the method of reporting such results, see figure 1, example 2.1.4 The iodine-amylose can be used with fibre-based paper, resin-coated paper, films and plates. It is the methodto be used with films and papers containing incorporated developing agents.1.5 The methylene blue method can be used with fibre-based paper, resin-coated paper, films and plates but notwith films and paper containing incorporated developing agents.1.6 The silver sulfide densitometric method measures thiosulfates, polythionates and all other residual chemicalsin a processed product that react with silver ion to form a silver "stain" under the conditions of the test.1.7 A tabulated summary of methods, scope, etc. is given in annex B.

标准预览图