GC USP Methods

MethodPhase Composition RecommendationsSGE Equivalent Phase
G1Dimethylpolysiloxane oilBP1
G2Dimethylpolysiloxane gumBP1
G350% Phenyl - 50% MethylpolysiloxaneBPX50
G53-CyanopropylpolysiloxaneBPX70
G6Trifluoropropylmethylpolysiloxane-
G750% 3-Cyanopropyl - 50% PhenylmethylsiliconeBP225
G14Polyethylene glycol (average molecular weight of 950-1,050)BP20 (Wax)
G15Polyethylene glycol (average molecular weight of 3,000-3,700)BP20 (Wax)
G16Polyethylene glycol (average molecular weight of 15,000)BP20 (Wax)
G1775% Phenyl - 25% MethylpolysiloxaneBPX50
G1925% Phenyl - 25% CyanopropylmethylsiliconeBP225
G20Polyethylene glycol (average molecular weight of 380-420)BP20 (Wax)
G25Polyethylene glycol TPA (Carbowax 20M terephthalic acid)BP21 (FFAP)
G275% Phenyl - 95% MethylpolysiloxaneBPX5
G2825% Phenyl - 75% MethylpolysiloxaneBPX35
G3220% Phenylmethyl - 80% DimethylpolysiloxaneBPX35
G35Polyethylene glycol & diepoxide esterified with nitroterephthalic acidBP21 (FFAP)
G361% Vinyl - 5% PhenylmethylpolysiloxaneBPX5
G38Phase G1 plus a tailing inhibitorBP1
G39Polyethylene glycol (average molecular weight of 1,500)BP20 (Wax)
G41Phenylmethyldimethylsilicone (10% phenyl substituted)BPX5
G4235% Phenyl - 65% DimethylvinylsiloxaneBPX35
G436% Cyanopropylphenyl - 94% DimethylpolysiloxaneBP624