- Ultra 1: 100% Dimethylpolysiloxane
- Ultra 2: (5%-Phenyl)-methylpolysiloxane
- Non-polar
- Bonded and cross-linked
- Solvent rinsable
- HP-1 and HP-5 with tighter specifications for retention index and capacity factors
- Temperature range: -60° to 325°/350°C
Recommended for use with Sadtler Retention Library, a four-volume reference set that identifies compounds by retention indices alone. Catalogs over 2000 compounds by their retention behavior on three HP columns.
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