红葡萄酒中总酸检测方案(自动电位滴定)

KaM KYOTO ELECTRONICSMANUFACTURING CO.，LTD.TIF-12002enL-KoMKYOTO ELECTRONICSMANUFACTURING CO.，LTD. Application MemoAcidity of Red Wine Industry Food & beverage Instrument Automatic potentiometric titrator Measurement method Acid-base titration Standards Official Analysis Method of National Tax Agency JAPAN 1.Overview Wine acidity is measured by neutralization titration with sodium hydroxide according to theabove standard. The diluted red wine sample is titrated with 0.1ml/L sodium hydroxide up topH8.2 and the titration volume is converted to the tartaric acid concentration as acidity. If asample wine contains carbon dioxide gas， first boil to degas. 2. Apparatus Main unit Automatic potentiometric titrator (preamplifier STD) Electrode Combined glass electrode Temperature compensation electrode 3. Reagents Titrant 0.1mol/L sodium hydroxide 4. Example Sample Titer Acidity(mL) (mL) (g/100mL) 1 10.00 7.0950 0.5400 2 3 10.00 7.0950 0.5400 10.00 7.0861 0.5393 AverageSD RSD(%) 0.5398 0.0004 0.07 [nL3—Titration curve— Please feel free to contact us for any further information. Kyoto Electronics Manufacturing Co.， Ltd. Overseas Sales & Marketing Sect. http：//www.kyoto-kem.com/en/contact/form.php 京都电子工业株式会社-可睦电子(上海)商贸有限公司 上海市徐汇区宜山路333号1201室 电话：021-54488867 电邮： kemu-kem@163. com 网址： http：//www.kem-china. com 自动电位滴定仪 测定红葡萄酒的总酸含量(英文版) 葡萄酒的总酸是用氢氧化钠中和滴定法测定。 将稀释后的红葡萄酒样品用氢氧化钠标准滴定溶液滴定至pH=8.2，并将滴定体积转化为酒石酸的浓度作为总酸含量。如果样品中含有二氧化碳气体，先振荡水浴排除二氧化碳。