EC HPLC guard column (analytical), NUCLEOSIL 120-5 C8, 5 µm, 4x3 mm ICP-169 the analytes must be within

the analytes must be within ± 2xCRDL (for elements with CRDLs ³10 ug/L) and in ICSAB the analytes should be recovered within ± 20%

2-Methyl-3-methylthiopyrazine and 2-methyl-5-methylthiopyrazine

Benzo[a]pyrene-13C4

very strong cation exchanger (SCX)

SafetySpace™ filter tips have more space between the sample and the filter than do conventional filter tips

EC HPLC guard column (analytical), NUCLEOSIL 120-5 C8, 5 µm, 4x3 mm ICP-169 the analytes must be withinFor 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