1.1 <\/b>This International Standard specifies test methods for the determination of residual thiosulfate and other<\/p>\n
related chemicals in processed photographic materials.<\/p>\n
1.2 <\/b>This International Standard applies to silver halide\/gelatin products that have been processed with a final<\/p>\n
thiosulfate fixing bath and a water wash. This International Standard does not apply to stabilised black-and-white<\/p>\n
products, thermally processed films, or instant-type products. The procedures given in this International Standard<\/p>\n
measure residual thiosulfate, and the silver densitometric method measures residual related polythionate materials<\/p>\n
as well. Measurements carried out by the procedures in this International Standard may, within the limitations stated<\/p>\n
in annexes A and B, correlate with the image stabilities of processed photographs.<\/p>\n
1.3 <\/b>Film or plates with photographic-sensitive layers on both sides, or with a photographic sensitive layer on one<\/p>\n
side and a gelatin backing layer on the reverse side, may contain approximately twice as much thiosulfate after<\/p>\n
processing as samples having a coating on one side only. This situation will be true for materials for which residual<\/p>\n
thiosulfate is determined by the iodine-amylose or methylene blue procedures.<\/p>\n
NOTE For the method of reporting such results, see figure 1, example 2.<\/p>\n
1.4 <\/b>The iodine-amylose can be used with fibre-based paper, resin-coated paper, films and plates. It is the method<\/p>\n
to be used with films and papers containing incorporated developing agents.<\/p>\n
1.5 <\/b>The methylene blue method can be used with fibre-based paper, resin-coated paper, films and plates but not<\/p>\n
with films and paper containing incorporated developing agents.<\/p>\n
1.6 <\/b>The silver sulfide densitometric method measures thiosulfates, polythionates and all other residual chemicals<\/p>\n
in a processed product that react with silver ion to form a silver "stain" under the conditions of the test.<\/p>\n
1.7 <\/b>A tabulated summary of methods, scope, etc. is given in annex B.<\/p>\n","protected":false},"excerpt":{"rendered":"
Photography \u2014 Determination of residual thiosulfate and other related chemicals in processed photographic materials \u2014 Methods using iodine-amylose, methylene blue and silver sulfide<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ISO<\/b><\/a><\/td>\n 1999-06<\/td>\n 26<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":601700,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[714,2634],"product_tag":[],"class_list":{"0":"post-601688","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-37-040-20","7":"product_cat-iso","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/601688","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/601700"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=601688"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=601688"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=601688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}