Titrations and gravimetric testing are among the most frequently used procedures in analytical chemistry. Most of these »classical« methods are used by CC Analytical Services.
- Analytical parameters
- Sample digestion and preparation
Titrations are used to determine product characteristics such as acid number, saponification number, iodine number or hydroxyl number. Detection of the end point may be visual or potentiometric.
- Acid-base titrations
- Redox titrations
(e.g., iodometry, permanganometry)
- Titrations with ion-selective electrodes
(e.g., surfactant titrations, sulfate titrations)
- Karl Fischer titration
Analytical parameters are used to characterize organic and inorganic substances with standardized methods.
Physical parameters Chemical parameters
- Color number
- Melting point
- Particle size distribution
- Ash/sulfate ash
- Water (Karl Fischer)
- Dry substance/evaporation residue, etc.
Gravimetry usually permits determination with a substantially higher accuracy. It is therefore often used as a check for other methods, even though it is relatively time-consuming.
Applications of gravimetric determinations:
- Moisture content
- Dry weight
- Evaporation residue
- Ash content
- Sulfate ash
- Metal ions