Application Finder
- AB-083Sodium analysis by ion-selective electrode
This document explains how to measure Na ion concentration in diverse matrices with a sodium ion-selective electrode (Na-ISE) using direct measurement and standard addition.
- AN-NIR-076Quality control of polyvinyl alcohol
Polyvinyl alcohol (PVA) is a linear polymer, used in a variety of medical products (e.g. eye drops). Here, the degree of alcoholysis is an important index for the water solubility, viscosity, and adhesion of the product. The degree of alcoholysis is defined as the percentage of hydroxyl functional groups compared to the total functional groups accessible in the molecule. Conventional alcoholysis determination can take up to six hours per sample. Compared to the primary method, analysis with near-infrared spectroscopy (NIRS) only takes one minute. The following application note describes the determination of the degree of alcoholysis by NIRS.
- AN-R-029Oxidation stability of cosmetic and pharmaceutical raw materials
Determining the oxidation stability of raw materials for the cosmetic and pharmaceutical industry.
- AN-R-033Determination of antioxidant content with PEG as carrier material
Higher antioxidant levels mean longer product viability. The 892 Professional Rancimat determines antioxidant content in many products using a linear regression method.
- AN-T-231Determination of caffeine by direct titration
Direct titration is a simple and precise way to accurately measure the caffeine content in different nonaqueous products. The OMNIS Titrator equipped with a dSolvotrode reliably determines caffeine through flexible analyses combined with high-end software.
- AN-T-232Determination of caffeine by iodometric back titration
The iodometric back titration is a precise method used to accurately measure the caffeine content in various aqueous samples. Reliable determinations are made easy using the OMNIS Titrator equipped with a dPt Titrode.
- AN-T-245Photometric determination of ionic surfactants by two-phase titration
Accurate, reliable determination of ionic surfactants with the Epton two-phase titration method can be achieved using an OMNIS system as shown in this study.
