The integrated air valve (A) blocks hazardous vapours (B) and cleans the inflowing air (C) from dust and dirt particles. Various connectors keep your capillaries and tubes safely tightened (D) - even when extracting solvents from the reservoir. Safety Caps are available for most common glass bottles (e.g. thread size GL45). They can be customised for other container sizes by using different adapters. Especially recommended for HPLC use: Solvents stay clean and components of solvent mixtures can not evaporate. Optimum protection against health hazards caused by evaporation and insufficient sealing.