Polymer coating and thickness Recommended application Mechanism MW Polarity
100 µm PDMS Volatiles Absorbent 60-275 Non-polar
30 µm PDMS Non-polar semi-volatiles Absorbent 80-500 Non-polar
7 µm PDMS Non-polar high molecular weight compounds Absorbent 125-600 Non-polar
60 µm PEG Alcohols and polar compounds Absorbent 40-275 Polar
85 µm PA Polar semi-volatiles Absorbent 80-300 Polar
75 µm/85 µm CAR/PDMS Gases and low molecular weight compounds Adsorbent 30-225 Bipolar
65 µm PDMS/DVB Volatiles, amines and nitro-aromatic compounds Adsorbent 50-300 Bipolar
60 µm PDMS/DVB Amines, nitroaromatic and polar compounds (HPLC use only) Adsorbent 50-300 Bipolar
50/30 µm DVB/CAR/PDMS on a StableFlex fiber Flavour compounds: volatiles and semi-volatiles, C3-C20 Adsorbent 40-275 Bipolar
50/30 µm DVB/CAR/PDMS on a 2 cm StableFlex fiber Trace compound analysis Adsorbent 40-275 Bipolar
CAR: Carboxen; PDMS: Polydimethylsiloxane; DVB: Divinylbenzene; HPLC: High Performance Liquid Chromatography; PA: Polyacrylate; PEG: Carbowax-Polyethylene Glycol [19].
Table 2. Summary of commercially available SPME fibers.