determination of ph

• Characterization of sludge - determination of ph value
  污泥的特性记述. ph值的测定
• Chemical reagent - general rules for the determination of ph
  化学试剂ph值测定通则
• Textiles - determination of ph of aqueous extract
  纺织品.含水萃取物中ph值的测定
• Plastics . phenolic resins . determination of ph
  塑料制品.酚醛树脂. ph值的测定
• Fruit and vegetable products - determination of ph
  水果和蔬菜产品ph值的测定方法
• Characterization of sludge . determination of ph - value
  淤泥的特性表示. ph值的测定
• Soil improvers and growing media - determination of ph
  土壤改良剂和培养基. ph值测定
• Fruit and vegetable products . determination of ph
  水果和蔬菜制品. ph值的测定
• Methods of test for desiccants - determination of ph
  干燥剂试验方法.第3部分: ph值测定
• Meat and meat products . determination of ph reference method
  肉和肉制品. ph值的测定