TLC 硅胶60 RP-2 pkg of 25 plates, plate L × W 20 cm × 20 cm, glass support

TLC硅胶60 RP-18 F₂₅₄s pkg of 20 sheets, sheet L × W 20 cm × 20 cm, aluminum support

TLC 硅胶60 RP-2 F₂₅₄（硅烷化）25片玻璃板 20 x 20 cm glass support, fluorometric, pkg of 25 plates, plate L × W 20 cm × 20 cm, suitable for thin layer chromatography (TLC)

SPME 纤维组件聚二甲基硅氧烷 (PDMS) df 100 μm(PDMS, needle size 24 ga, for use with manual holder

SPME 纤维组件二乙烯基苯/羧基/聚二甲基硅氧烷 (DVB/CAR/PDMS) needle size 23 ga, StableFlex, for use with manual holder or autosampler, fiber L 2 cm

SCOT 毛细管GC色谱柱 phase Bentone 34/DNDP