Markes International is pleased to announce the introduction of its new range of thermal desorption instrumentation featuring: • UNITY 2: universal TD platform for single 3.5- or 4.5-inch (DAAMS) tubes with or without tags. Re-collection for repeat analysis included as standard. • ULTRA 2: TD autosampler for up to 100 tubes (3.5- or 4.5- inch versions available). Options include tube-tag read/write and automatic sample re-collection. • Series 2 Air Server options for automated canister analysis and round-theclock on-line air monitoring. Cryogenfree operation means low running costs and high uptime. For over a decade, Markes International has pioneered and commercialised enhancements to analytical TD instrumentation and associated sampling apparatus.