8.000.5051EN - Metrohm

06TitrationBenefit from the know-how of the market leaderChoosing the right electrode is crucial for successful titration.Metrohm is the leading manufacturer in the field oftitration. More than 60 years of experience and the mostcomprehensive and innovative portfolio on the marketare proof of our strength. Tap into our extensive collectionof potentiometric applications and benefit from theexpertise of our application laboratories.Of course, our applications cover the different regional/national determination methods and guarantee compliancewith the respective official standards.Besides choosing the right kind of diaphragm, the responsebehavior of the electrode is also important, inparticular, if the titration is to be carried out to a definedendpoint. Metrohm offers an appropriate electrode forevery need. Further practical tips on using Metrohm electrodesare given in the leaflets «Electrodes for titration»and «Elec trodes for pH Measurement». These can bedown loaded for free at www.metrohm.comArea of application Metrohm electrode FeaturespH value Flat membrane • Ideal for determining total acid contentAcid content of alcoholic drinks electrodeand measuring the pH value in wine• Designed for small sample volumesSulfite in wine Double Pt electrode • Robust• Long working life• Easy to cleanStabilization through sulfiteIn some parts of the wine industry, there are efforts toproduce wines without the addition of sulfur dioxide. Forthe past few years, a small number of conventional producersand also organic producers have managed to dothis successfully, thanks primarily to cellar technology.Pro ducing naturally sweet wines without sulfur is, however,impossible, because the high residual sugar contentsprovide an ideal nutrient medium for microorganisms ofall kinds. Depending on the particular region or kind ofwine, different maximum limits for residual SO 2apply.