GB/T 9984.6-2004.Sodium tripolyphosphate for industrial use-Determination of iron content-2 ,2 -bipyridyl spectrophotometric method.1范围GB/T 9984.6规定了用分光光度法测定...
GB/T 9984.5-2004.Sodium tripolyphosphate and sodium pyrophosphate for industrial use-Determination of loss on ignition.1范围GB/T 9984.5规定了工业用三聚磷酸钠(三磷酸五...
GB/T 9984.3-2004.Sodium tripolyphosphate for industrial use- Separation by ion exchange chromatography and determination of the different phosphate forms.1范围GB/T 9984.3规定了分...
GB/T 9984.2-2004.Sodium tripolyphosphate for industrial use-Determination of total phosphorus ( V ) oxide content-Quinoline phosphomolybdate gravimetric method.1范围GB/T 9984.2规定...
GB/T 9984.1-2004.The measurement of whiteness for industrial sodium tripolyphosphate.1范围GB/T 9984.1规定了测定工业(包括食品工业用)三聚磷酸钠产品白度的方法...
GB/T 9983-2004.Industrial sodium tripolyphosphate.1范围GB/T 9983规定了工业三聚磷酸钠的产品分类、技术要求、试验方法、检验规则和标志、包装、运输...
GB/T 4689. 22-1996.Leather- Determination of air permeability.4.2 秒表:精度0.1 s.4.3钢制 模刀:内壁是正圆柱型,直径5.5 cm.刀口内外表面形成20*左右的角。这个...
GB/T 4689. 21-1996.Leather - Determination of absorption of water.5试样用模刀切取试样,切时粒面向上，然后按GB4689.2进行空气调节。6试验条件所有操作都必...
GB/T 4689. 20-1996.Leather- Determination of adhesion of finish.1范围GB/T 4689. 20规定了皮革涂饰层与皮革之间(或涂饰层与涂饰层之间)的粘着牢度测定方法。...
