Retention gaps, phenylmethyl silylated, low–medium polar Gradation - pH - 4.0 • 4.3 • 4.6 • 4.9 • 5.2 • 5.5 • 5.8 • 6.1 • 6.4 • 6.7 • 7.0 7-Methyl-1-naphthol

7-Methyl-1-naphthol

25G-NBOMe hydrochloride

4-Methyl-1-hexene

Volume 10 µL Syringe Type Microliter Syringe Series 700 Termination Cemented Needle (N) Needle Cemented Needle Gauge 26s gauge Point Style 5 Needle Length 2 inch (51 mm) Fluid Path SST

Retention gaps, phenylmethyl silylated, low–medium polar Gradation - pH - 4.0 • 4.3 • 4.6 • 4.9 • 5.2 • 5.5 • 5.8 • 6.1 • 6.4 • 6.7 • 7.0 7-Methyl-1-naphtholThe retention gap technique in combination with on column injection allows concentration of a large sample volume in the capillary column. Retention gaps consist of uncoated (no stationary phase), deactivated fused silica capillary tubing. A retention gap must be inert without any noticeable retention (analytes are not retained). Phenylmethyl (low medium polar) deactivated tubing as an additional choice of surface deactivation. Improve peak shape by