Smart SPME Arrow 5-membrane method development kit: Acrylate, Carbon WR/PDMS, DVB/PDMS, PDMS, DVB/Carbon WR/PDMS. Recommended for high boiling analytes. Contains 1.1mm Acrylate 100um, 1.1mm Carbon WR/PDMS 120um, 1.1mm DVB/PDMS 120um, 1.1mm PDMS 100um, 1.1mm DVB/Carbon WR/PDMS 120um. Replacement for 227-35340-01.