Gemini High pH LC Columns

Gemini high-efficiency, highly stable reversed-phase HPLC columns designed for reliable performance across a wide pH range of 1–12. Thanks to patented TWIN™ Technology and an organosilica construction, Gemini columns combine high efficiency, mechanical strength, and resistance to chemical degradation. The wide pH range enables greater control over selectivity and more effective optimization of separations for acidic, basic, and neutral compounds.

Key Benefits 

• Wide pH range of 1–12 — enables the use of both acidic and basic conditions to optimize selectivity and separation.
• Extended column lifetime — TWIN™ Technology protects the silica from chemical attack and ensures stable column performance under demanding conditions.
• High efficiency and reproducibility — maintains efficiency and retention times during extended operation under both high- and low-pH conditions.
• High mechanical strength — the combination of a pure silica core and protective organosilica layer provides particle strength and column stability.
• High loading capacity — particularly useful for metabolite identification, preparative purification, and the analysis of basic compounds.
• Stable performance with different buffer systems — Gemini delivers consistent performance with both volatile and non-volatile buffers.
• Improved peak shape for basic compounds — the inert surface minimizes undesirable silanol interactions.

Gemini — stability and high efficiency across the entire pH range of 1–12.