Dual layer SPE tube that contains Na2SO4 (upper layer) and Florisil (magnesium silicate; lower layer) separated and packed with PTFE frits (glass tubes) or PE frits (PP tubes).

• Resistant to harsh chemicals and aggressive solvents
• Absence of leachables such as pthalates and plasticizers
• Florisil particle size- 60/100 mesh (150 to 200 μm); Na2SO4 Purity - 99,99+%, density - 2,68 g/ml
• Excellent for removing/isolating polar compounds from organic matrices
• Na₂SO₄ layer aids in removing aqueous sample residues that may hinder Florisil performance and/or subsequent GC analysis

Available in glass SPE hardware allowing users to reactivate Florisil through heating at 140 °C, 16 hours.

Use in conjunction with Visiprep Large Volume Sampler and Visiprep SPE Vacuum Manifolds for processing larger volume samples.