Japan YMC J'sphere series of columns

YMC J'sphere series ODS packed column using a new chemical bonding technology to make such a packed column has a higher reproducibility. The average column efficiency exceeding 100,000 blocks / m inert reproducibility There are three different levels of hydrophobic alkaline substances excellent peak symmetry. Particle size: 4μ pore size: 8nm 80A carbon content: ODS-H80 22% ODS-M8014% ODS-L80 9% Features:? Efficient very high specific surface area 500m2 / g in the analysis of basic samples, excluding the impact of available excellent peak symmetry? selectable retention time J'sphere series ODS column, there are three different carbon content of 9%, 14%, 22% and has a different hydrogen bonding capacity available in three different retention times and selectivity . ODS-H80 has a 22% carbon content of the most hydrophobic hydrolytic stability. It can withstand high and low PH PH to 9.3 range within PH1.1 stable over 500 hours! ODS-M80 has a 14% carbon content moderate hydrophobicity and hydrogen bonding capability. By capping and inert carrier and other means, so that the symmetry of the peaks is much more than ordinary C18 column ODS-L80 9% carbon content, retention effect similar to C8, but because there is a very high selectivity of hydrogen bonding capability even three C content of different application Illustrative examples of a C18 column, sulfonamides 1. Sulfaguanidine2 Sulfamethizole3 Sulfanilamide4 Sulfisomidine5 Sulfadiazine6 Sulfathiazole7 Trimethoprim8 Sulfapyridine9 Sulfamerazine10 Sulfamethoxypyridazine11 Sulfamethazine O950324L Column:.......... J \ 'sphere ODS-H80 (4μm , 80A) 250 X 4.6 mm IDEluent: 50mM NH4H2PO4 - (NH4) 2HPO4 (pH 6.2) / THF (90/10) Flow rate: 0.5 mL / minTemperature: 37Detection: UV at 275 nm, 0.16 AUFSInjection: 10 μL (18 μg / mL) Example two, Aflatoxins 1.Aflatoxin G22.Aflatoxin G13.Aflatoxin B24.Aflatoxin B1 K931124B Column: J \ 'sphere ODS-M80 (4μm, 80A) 150 X 4.6 mm IDEluent: methanol / water (40/60 ) Flow rate: 1.0 mL / minTemperature: 37Detection: UV at 365 nm, 0.04 AUFS three examples, Aflatoxins 1.Aflatoxin G22.Aflatoxin G13.Aflatoxin B24.Aflatoxin B1 K931125A Column: J \ 'sphere ODS-L80 (4μm, 80A) 150 X 4.6 mm IDEluent: methanol / water (40/60) Flow rate: 1.0 mL / minTemperature: 37Detection: UV at 365 nm, 0.04 AUFSInjection: 10 μL (7 `10 ppm?)