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100x N 24 glass screw neck vials
Heptafluorobutyric anhydride
n-Nonadecane
Gauge 26 gauge Point Style 2 Needle Length 2 inch (51 mm) Autoclavable Yes Sales Quantity 6 needles per pack Hub Small RN Needle Point Styles
Water wettable – even if bed runs dry
EC HPLC guard column (analytical), NUCLEOSIL 300-5 C4, 5 µm, 4x3 mm ICP-23N-5 100x N 24 glass screwFor protection of your main HPLC column from contamination, it is recommended to use guard columns. These short columns are placed into a guard column holder. The guard column holder in combination with a guard column inside is installed between the injector and the HPLC column. This installation prevents chemical impurities to reach the main column. Because a contamination could form an irreversible bond with the column packing material (stationary
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