EC HPLC guard column (analytical), NUCLEODUR Sphinx RP, 5 µm, 4x3 mm Filling quantity - 4500 mg By changing to an appropriate

By changing to an appropriate open top screw closure you may carry out afterwards a Headspace analysis without the need of sample transfer on instruments that are suitable for this vial type

Mono-n-decyl phthalate

Assurance® Grade Quality Control Standard 22 for AA & ICP in 5% HNO3/tr

4'-Dibromobiphenyl

EC HPLC guard column (analytical), NUCLEODUR Sphinx RP, 5 µm, 4x3 mm Filling quantity - 4500 mg By changing to an appropriateFor 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