乳剂合成经常出现这样的情况:同一乳剂配方、同种原料、同一车间、同样操作,但只是时令不同(比如盛夏和严冬),所合成的乳剂性能往往差异很大。一般说来,不管高感低反差、还是低感高反差乳剂,夏季温湿度高时,总是感光度、反差值皆偏低(甚者相差30～40％);冬季则相反,有时灰雾亦偏高。比如,一种彩色片黄层乳剂,每至12月份,黄色灰雾便成“不速之客”。这种情况几年来如此,可谓患了典型的“气候病”。此类现象,在各种乳剂中都程度不同的存在着。因此,需要乳 Emulsion synthesis is often the case: the same emulsion formulation, the same raw materials, the same workshop, the same operation, but only different seasonal (such as summer and winter), the performance of the emulsion are often very different. In general, regardless of the high sense of low contrast, or low sense of high contrast emulsion, the summer temperature and humidity is high, always sensitivity, the contrast value is low (or even a difference of 30 to 40%); In winter, on the contrary, sometimes fog Also high. For example, a color film yellow layer emulsion, every December, yellow fog becomes “uninvited guest.” This situation has been so for years, can be described as suffering from a typical “climate disease.” Such phenomena, in a variety of emulsions exist in different degrees. Therefore, milk is needed