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Technical Tip: Early Eluting Peak Shape
Depending on method conditions, early eluting compounds are apt to have poor peak shapes. Within are some steps that can be implemented to help minimize any distortions to early eluting peaks in gas chromatography.
Poor Sample Recovery? You May Be Over-Drying
For most reversed-phase solid phase extraction applications using a silica-based SPE media, cartridges are initially conditioned using an organic solvent such as methanol, followed by rinsing with water or a buffer.