SPE-polypropylene columns 
Special combination phase for SPE analysis of PCBs
SiOH-H2SO4: H2SO4-impregnated silica phase for oxidation of accompanying compounds to ionic and/or polar compounds
SA: strongly acidic cation exchanger based on silica with benzenesulphonic acid modification for removal of ionic and sulphur-containing compounds
Recommended application: 
extraction of PCBs from oil with reference to German industrial standard DIN 51527, part 1
This combination column is used together with a SiOH column.
OptieVolume (ml)  Adsorbent weight (mg)  Verp. (stuks)  
13  500/500  50  
23  500/500  250 (5 x 50)