白葡萄酒中总酸检测方案(自动电位滴定)

KM KYOTO ELECTRONICSMANUFACTURING CO.，LTD.TIF-99304enL京都电子工业株式会社-可睦电子(上海)商贸有限公司电话：021-54488867 电邮： kemu-kem@163. com-KoMKYOTO ELECTRONICSMANUFACTURING CO.，LTD. Application MemoAcidity of White wine Industry Food & beverage Instrument Automatic potentiometric titrator Measurement method Acid-base titration Standards Official Analysis Method of National Tax Agency JAPAN 1.Overview The acidity of fruit wine is measured by neutralization titration with sodium hydroxideaccording to the above standard. Potentiometrically titrate a white wine sample with 0.1ml/Lsodium hydroxide up to pH8.2 and convert the titration volume to tartaric acid. When asample wine contains carbon dioxide gas， first degas it by boiling. 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 —Measurement resultsS- Sample Titer Acidity (mL) (mL) (g/L) 1 10.00 7.3780 5.402 2 10.00 7.3961 5.415 3 10.00 7.3699 5.396 Average 5.404 SD 0.010 RSD(%) 0.18 —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 ( 上海 市 徐 汇区 宜 山 路333 号12 0 1室 网址： h t tp：// ww w .k em-ch i na .co m ) 自动电位滴定仪 测定白葡萄酒的总酸含量(英文版) 葡萄酒的总酸是用氢氧化钠中和滴定法测定。将稀释后的白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。