Fully automated potentiometric determination of the hydroxyl number (HN) according to ASTM E1899 and DIN EN ISO 4629-2

The presented titration system can be used for the fully automated determination of the hydroxyl number (HN) according to ASTM E1899 and EN ISO 4629-2. The method allows, the determination of polyols and oxooils without boiling under reflux or other sample preparation and is therefore a big benefit for laboratories that have to cope with a high sample throughput.

The standards EN 15168 and DIN 53240-3 relay on the same analysis method as in ASTM E1899.