GRS-5 GC Capillary Column
The GRS-5 phase is a (5% phenyl) methylpolysiloxane polymer. Like the GRS-1 dimethylpolysiloxane phase, the GRS-5 phase is a widely used general purpose GC phase ideal for a broad range of applications. The presence of the phenyl groups provides induced dipole interactions leading to degrees of increased retention for aromatic solutes. A 5% phenyl substitution causes a nominal increase in polarity; yet the GRS-5 phase displays the attributes of a non-polar phase.
The non-polar GRS-5 phase, which separates compounds according to boiling point, is another frequently used phase type in GC. Bonding and crosslinking this general purpose GC phase increases the resistance to degradation by rinsing, large solvent injections and the deposition of non-volatiles. The GRS-5 phase offers excellent efficiency and thermal stability. In addition, this non-polar phase is less susceptible to oxidation and hydrolysis than phases incorporating more polar functional groups.
- Bonded and Crosslinked
- Non polar
- Excellent thermal stability
- Comparable to: SE-52, SE-54, OV-73
- Similar phases: DB-5, Rtx -5, HP-5, Ultra-5, SPB-5, CPSil-8CB, AT-5, BP-5
- USP Phase Specification: G27