Karl Fischer & Potentiometric Titration Application Library

Quantitative determination of sodium citrate | Autotitrator - JM Science

Potentiometric Determination of Sodium Citrate in Pharmaceuticals

Drugs and MedicinesMay 10, 2023

Automated potentiometric titration provides an accurate, reproducible method for determining sodium citrate in pharmaceutical formulations in accordance with Japanese Pharmacopoeia methodology.

Standardization of perchloric acid in acetic acid with potassium hydrogen phthalate | Autotitrator

Drugs and MedicinesMay 10, 2023

Measurement method with perchloric acid – acetic acid standard solution is defined as a quantitative determination method for each drug and medicine in Japanese Pharmacopoeia. Standardization of perchloric acid – acetic acid standard solution with potassium hydrogen phthalate is also described there. This report introduces the standardization procedure that potassium hydrogen phthalate is dissolved in acetic acid, then it is titrated with perchloric acid – acetic acid standard solution. The factor of perchloric acid – acetic acid standard solution is determined with potentiometric titration. 1 mol potassium hydrogen phthalate reacts with 1 mol perchloric acid quantitatively on this titration (formula 1).

Purity determination for papaverine hydrochloride by perchloric aid titration | Autotitrator - JM Science

Potentiometric Assay of Papaverine Hydrochloride by Non-Aqueous Titration

Drugs and MedicinesMay 10, 2023

Automated non-aqueous potentiometric titration provides a precise and reproducible method for the assay of papaverine hydrochloride in accordance with pharmaceutical quality control requirements.

Sodium chloride in peritoneal dialysis solution | Autotitrator

Drugs and MedicinesMay 10, 2023

This report introduces an example of measurement for sodium chloride in peritoneal dialysis solution with precipitation titration. The sample is acidified by nitric acid and the concentration of sodium chloride is determined by precipitation titration with silver nitrate titrant using the silver / reference electrode.
NaCl ＋ AgNO₃ → AgCl ＋ NaNO₃

Determination of sodium acetate with perchloric acid titration | Autotitrator

Drugs and MedicinesMay 10, 2023

Sodium acetate is widely used in chemical and medical industry (E.g. Buffer, Antifreezing agent, Alkalizing supplements, Dye chemical, Hydragogue). Determination method of sodium acetate is described on Japanese Pharmacopoeia and Japanese Industrial Standard (JIS K8371). Both methods employ perchloric acid titration method, dissolve the sample in glacial acetic acid and titrate with perchloric acid – acetic acid standard solution. Endpoint is detected by potentiometric titration with glass / reference electrodes.
CH₃COONa ＋ HClO₄ → CH₃COOH ＋ NaClO₄

Iodine value measurement for cooking oil | Autotitrator - JM Science

Iodine Value Determination of Cooking Oils Using Automated Titration

Application NotesMay 10, 2023

Determine iodine value in cooking oils to measure unsaturation and quality. Improve oil characterization and quality control with automated titration.

Acid value of cooking oil | Autotitrator - JM Science

Acid Value Determination in Cooking Oils Using Automated Potentiometric Titration

Application NotesMay 10, 2023

Learn how automated potentiometric titration accurately determines the acid value of edible and cooking oils. Monitor free fatty acids, assess oil freshness, and improve food quality control with the HIRANUMA COM-A19 Automatic Titrator.

Continuous measurement of citric acid and vitamin C in soft drink | Autotitrator - JM Science

Simultaneous Determination of Citric Acid and Vitamin C in Soft Drinks Using Automated Titration

Application NotesMay 10, 2023

Simultaneous citric acid and vitamin C analysis in soft drinks using automated titration. Improve beverage quality, consistency, and nutritional control.

Salt Content in Soy Sauce | Autotitrator

FoodMay 05, 2023

The determination method of salt content in soy sauce is described as “Measurement of Salt Content” in JAS (Japanese Agriculture Standard). Potentiometric titration and Mohr method is defined in JAS as determination method of salt content, potentiometric titration is more common method because of its ease and high precision. The sample is acidified by nitric acid and the concentration of salt is determined byprecipitation titration with silver nitrate titrant using the silver electrode.

NaCl　＋　AgNO₃　→　AgCl　＋　NaNO₃

Successive measurement of acid and salt in dressing | Autotitrator - JM Science

Simultaneous Salt and Acidity Determination in Salad Dressing Using Automated Titration

Application NotesMay 05, 2023

Simultaneous salt and acidity measurement in salad dressing using automated titration. Improve QC efficiency and ensure consistent product quality.

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