![EC HPLC guard column (analytical), NUCLEOSHELL RP 18plus, 5 µm, 4x2 mm 5190-1535 Benzo[a]chrysene](https://cdn.shopify.com/s/files/1/0296/2155/1241/products/HPLC_guard_column_EC_4-2_NUCLEOSIL_NUCLEODUR_NUCLEOSHELL_chromatography_092db9fd-2ce0-4a8a-80ed-80a5d0c24489.jpg?v=1740396546)
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Benzo[a]chrysene
If the number is lower than the TCLP limit
Sulfapyridine
Oxomalonic acid
Volume 25 µL Syringe Type Gastight Syringe Series 1700 Termination Fixed Needle (FN) Needle Cemented Needle Gauge 22s gauge Point Style 3 Needle Length 2 inch (51 mm) CTC Syringe Type C-Line Fluid Path SST
EC HPLC guard column (analytical), NUCLEOSHELL RP 18plus, 5 µm, 4x2 mm 5190-1535 Benzo[a]chryseneFor 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