The new POD (pocket diffuser) sampler (photo) is a passive sampler that combines the benefits of radial and axial samplers for volatile organic compounds (VOCs). POD gas samplers provide improved sensitivity and accuracy, along with faster response times, when compared to other passive samplers, says the company, while also bringing the additional benefit of re-usability. POD sampler cartridges can be reconditioned and reused over 100 times, which is around five times greater than traditional radial samplers, and the sampler itself can be used indefinitely. These benefits make large-scale air-monitoring studies easier to run and more affordable. Furthermore, the sampler’s optimized radius ratio ultimately reduces the amount of adsorbent material required. The POD sampler is compatible with any commercial thermal desorption system. — Markes International Ltd., Bridgend, U.K.