Poroshell 120 HPH-C8 UHPLC guard column with inner diameter 4.6 mm, length 5 mm and particle size 4.0 µm. 3 pieces per pack. The guard column extends the life of analytical separation columns by protecting them from particles and contaminants, ensuring consistent separation quality and improved column efficiency. HPH-C8 contain InfinityLab Poroshell hybrid particle technology to ensure stability at high pH values. The hybrid particle technology improves the overall stability of the particles at high pH values and enables a longer lifetime and fewer column changes. The selectivity of HPH chemistries is very similar to EC-C18 and EC-C8, allowing for easy method transfer. About InfinityLab Poroshell 120 InfinityLab Poroshell 120 surface-porous columns for reversed-phase liquid chromatography (LC) offer exceptional efficiency and reliability. Twenty chemistries - from various C18 columns to other unique phases - are available in up to three particle diameters: 1.Meer tonenMinder tonen