PUF & XAD
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 Equivalent to XAD-2 Resin; Exclusively from Restek!Ultra-Clean resin eliminates the hassle of cleaning and testing resin for air sampling. - For adsorbing semivolatiles in air.
- Cleaned, GC tested and certified.
- Available in 100 gram quantities.
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 - Precleaned and ready to use for collection of semivolatiles (pesticides, PCBs, PAHs).
- Both large high-volume (220-280 L/min.) and small low-volume (1-5 L/min.) PUFs available.
- Suitable for ambient, indoor, and industrial hygiene applications.
- PUF/XAD-2 "sandwiches" capture a wider range of semivolatiles.
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 Durable and reusable, PUF glass holders reduce waste and are a cost-effective alternative to precleaned packed cartridges. - Fit either 6 cm or 22 mm OD PUF plug or can be used with bulk SDVB resin.
- Large glass holder fitted with double stainless steel screens for support.
- Small glass holder has stem designed for secure 1/4″ ID tubing connection to sampling pump.
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 - Unwashed PUF plugs for both low-volume and high-volume sampling.
- Certified to be flame retardant free—making them easier to clean for trace analysis.
- Compliant with EPA and ASTM methods—0.022 g/cm3 density.
- Glass holders sold separately.
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 - Styrene/divinylbenzene, equivalent to XAD-2 resin.
- Untreated, packaged in 1 kg plastic containers.
- Spherical, 20 to 60 mesh particles.
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