PEEKsil is compatible with most organic solvents. PEEKsil is resistant to strong acids and has an effective pH range of 0-10. PEEKsil is not compatible with hydrofluoric acid. PEEKsil can be used in all applications where solvents must be pumped under high or low pressures with little flow resistance or possibility of contamination. Typical uses are in LC connecting lines, sample loops and sample lines.