| 摘要 |
The invention provides an acid photographic fixing agent comprising a solution of an alkali metal thiosulphate or an ammonium thiosulphate or a mixture thereof stabilized by a soluble sulphite or bisulphite wherein the ratio by weight of the soluble sulphite to the thiosulphite is greater than 1.2:1 or greater than 1.44:1 if the bisulphite is used this fixing agent improves both the wash out characteristics and the stability of the solution. |
