MilliporeSigma™ Supelco™ Supelclean™ ENVI-Carb™ II/PSA SPE Tube, Bed Wt. 600 mg PSA/300 mg ENVI-Carb™

Retention Mechanism: Reversed-phase and anion-exchange. Sample Matrix Compatibility: Organic or aqueous solutions. Dual layer SPE tube that contains both Supelclean ENVI-Carb (upper layer) & PSA (lower layer) SPE sorbents (separated by PE frit). Developed to offer superior clean up when conducting multi-residue pesticide analysis from food (e.g. agricultural products, meats, etc.). ENVI-carb has a strong affinity towards planar molecules, and can isolate/remove pigments (e.g., chlorophyll and carotinoids) and sterols commonly present in foods and natural products. Supelclean PSA is a polymerically bonded, ethylenediamine-N-propyl phase that contains both primary and secondary amines. Supelclean PSA has a strong affinity and high capacity for fatty acids, organic acids, and some polar pigments and sugars. Tested for superior cleanliness using GC-FID and GC-MS.