DM-5MS/LB

• Cross-linked 5% diphenyl / 95% phenyl arylene dimethyl polysiloxane

• Very low bleed

• Improves the resolution between Benzo[b]fluoranthene and Benzo[k]fluoranthene

• Similar to DB-5MS

DM-5MS / LB (low bleed) column is coated with a 5% diphenyl / 95% phenyl arylene dimethyl polysiloxane phase, which can inhibit the formation of ring-shaped fragments of siloxane skeleton, thereby reducing column bleed and increasing the thermal stabilty. The stationary phase has better stability; and will not exhibit oxidative degradation when there is trace oxygen in the carrier gas. 

DM-5MS / LB column is similar to DM-5MS. The DM-5MS / LB has good sensitivity and peak symmetry for strong polar and basic compounds. We recommend DM-5MS / LB column for analysis of semi-volatile compounds such as PAHs and PCBs.