CAPCELL PAK MF Ph-1 SG 80Å 5µm 10x4.0mm HPLC Guard Cartridges

The Osaka Soda Capcell Pak MF Ph-1 SGGuard cartridges 10x4.0mm, 5µm, are used to protect Capcell Pak MF Ph-1 SG HPLC columns. 12415 is used as the guard column holder.

Features and Benefits

• Silica support coated with a silicone polymer film
• Alkyl groups bound only to the polymer layer
• This allows for a wide pH range up to pH 12
• Low-metal silica for complex-forming analytes
• Over forty phases, ranging from C18 to size-exclusion

Additional Notes

Capcell Pak employs a unique design principle, which the manufacturer refers to as the “capsule type.” The silica support is not silanized directly; instead, it is first coated with a uniform, thin layer of silicone polymer, and the functional groups are bound only to this layer. In this way, the brand solves a fundamental problem in reverse-phase chromatography: Conventional octadecyl phases hydrolyze in alkaline conditions even after end-capping, causing the silica support to dissolve, whereas purely polymeric phases exhibit lower separation efficiency, lower compressive strength, and swelling behavior. The polymer layer therefore replaces end-capping and is the reason for the brand’s wide pH ranges. The silica is also tested for its metal content, which is essential for complex-forming analytes. The individual phases can be plotted on a diagram of hydrophobicity versus surface polarity, which serves as the key to phase selection within the brand.

Legal Information

Capcell Pak is a product line of Osaka Soda Co., Ltd., Osaka, Japan. The product and phase names listed are part of the manufacturer's chromatography portfolio.