- Suitable for a wide range of analyte chemistries and sample matrices.
- Reliable performance meets or exceeds other brands.
- Optimized for PAL system autosamplers and compatible with most GC inlets.
- Smart SPME fibers now available.
Restek PAL SPME fibers deliver results that consistently meet or exceed the performance of other solid phase microextraction fibers. Our reliable SPME fibers are optimized for PAL system autosamplers and are compatible with most GC inlets. Restek PAL SPME fibers are ideal for many applications in environmental, food, clinical, and other industries.
Typical Applications
- Trace analysis in food
- Drugs and pharmaceuticals
- Herbicides/pesticides
- Medical diagnostics
- Organics in water
- Trace impurities in polymers and solid samples
- Solvent residues in raw materials
Which fiber is best for my application?
Restek PAL SPME fibers are suitable for a wide range of analyte chemistries and sample matrices. Choose the best SPME fiber for your application based on the properties of your target compounds. You can easily confirm the fiber type by the color of the hub that connects it to the injector.
| Target Analytes | Molecular Weight | Recommended Fiber | Hub Color | Non-Smart SPME Fiber | Smart SPME Fiber | |||
| Each (cat.#) | 3-pk. (cat.#) | 5-pk. (cat.#) | Each (cat.#) | 3-pk. (cat.#) | ||||
| Nonpolar | 125–600 | 7 μm polydimethylsiloxane (PDMS) | Green | 27482-1 | 27482-3 | 27482-5 | 28919-1 | 28919-3 |
| Nonpolar, semivolatile | 80–500 | 30 μm polydimethylsiloxane (PDMS) | Golden | 27481-1 | 27481-3 | 27481-5 | 28918-1 | 28918-3 |
| Volatile | 60–275 | 100 μm polydimethylsiloxane (PDMS) | Red | 27480-1 | 27480-3 | 27480-5 | 28917-1 | 28917-3 |
| Polar, semivolatile | 80–300 | 85 μm Polyacrylate | Gray | 27478-1 | 27478-3 | 27478-5 | 28913-1 | 28913-3 |
| Highly volatile | 30–225 | 95 μm Carbon wide range/Polydimethylsiloxane (Carbon-WR/PDMS) | Dark blue | 27479-1 | 27479-3 | 27479-5 | 28914-1 | 28914-3 |
| Aromatic, semivolatile | 50–300 | 65 μm Divinylbenzene/ Polydimethylsiloxane (DVB/PDMS) | Violet | 27874-1 | 27874-3 | 27874-5 | 28916-1 | 28916-3 |
| Volatile and semivolatile | 40–275 | 80 μm Divinylbenzene/Carbon Wide Range/ Polydimethylsiloxane (DVB/Carbon-WR/PDMS) | Dark Gray | 27873-1 | 27873-3 | 27873-5 | 28915-1 | 28915-3 |
Restek PAL SPME Fibers Are Proven to Perform
A quantitative comparison of Restek PAL SPME fibers to a popular brand proves that Restek PAL SPME fibers perform as well as or better than the competition. In this comparison of 80 μm DVB/Carbon WR/PDMS triple-phase fibers, it is clear that comparable results were obtained for residual solvents in cannabis extracts.
Residual solvents analysis in cannabis extracts may be analyzed with a USP <467> approach. The data below were obtained by headspace (HS)–solid phase microextraction (SPME) on a 6 mL sample prepared as follows:
- 3 g sodium chloride (NaCl) was measured into a 20 mL amber headspace vial (cat. # 23086) with a screw-top cap (cat. # 23090).
- 6 mL of deionized (DI) water was then added to the vial.
- Residual solvents (cat.# 34105) standard and n-propane, isobutane, n-butane (Emerald Scientific) standards were spiked at 10 μg/mL.
- Everything was capped and vortexed at 3000 rpm for 10 seconds, inverted, and then vortexed again for 10 seconds at 3000 rpm.
This sample was analyzed via the following parameters:
Test Parameters
- SPME Fibers: 80 μm DVB/Carbon WR/PDMS
- Extraction: 2 min in headspace at 30 °C with 1000 rpm agitation
- Thermal Desorption: 10 sec at 250 °C
- Column: Rxi-624 Sil MS, 30 m x 0.25 mm x 1.40 μm (cat. # 13868)
- Oven Program: 30 °C (hold 3 min) to 85 °C (hold 2 min) at 15 °C/min to 250 °C at 35 °C/min
- Autosampler: PAL CTC RTC
- GC-MS: 7890 with 5977B HES MS
Restek PAL SPME fibers meet or exceed the performance of other brands residual solvents in cannabis extracts.
High-Performing SPME Fibers from Restek
PAL SPME fibers are high-performing fibers that meet or exceed the performance of other brands. Our reliable SPME fibers are optimized for PAL system autosamplers and are compatible with most GC inlets. SPME fibers are suitable for a wide range of analyte chemistries and sample matrices.
PAL system compatibility: Non-smart SPME fibers are not compatible with PAL3 series II rails. Smart SPME Fibers are compatible with PAL3 Series I and newer. Check instrument manufacturer requirements. Check instrument manufacturer requirements.
Recommended maximum GC inlet pressure is 50 psi or less.
All PAL SPME fibers are 10 mm in length and are housed in a 23-gauge needle. The phase is bonded onto a fused silica fiber core.
