Bottle-Vac 取样器 | 29-BV125A

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Bottle-Vac 取样器

Bottle-Vac Samplers

Bottle-Vac samplers are the most economical gas-phase sample collection containers available. They use Micro-QT Valves which are small and non-contaminating by design. Bottle-Vac samplers are as gas-tight as stainless steel canisters, making them a low-cost alternative for whole air sampling. The sample is only exposed to treated glass, 316 stainless (or Silonite coated stainless), and a small O-ring which forms the seal at the cap. All these materials are inert, allowing for a wide range of analytes to be recovered. Like the Micro-QT2 Valve, the Bottle-Vac’s Micro-QT Valve is capable of “around the valve” sampling by simply unscrewing the cap and tilting the tting to break the vacuum seal. Time-weighted sampling techniques are also possible using MiniCan sampling inlets, or by using Helium Diusion Sampling. (See pages 70–71)

Bottle-Vac 样品分析

In the laboratory, analysis by loop injection requires either pressurizing to 3 psig, or heating to 60–70°C to increase the pressure to purge a loop. Bottle-Vac samplers can also be analyzed using the 7200 or 7150D Preconcentrator to withdraw a larger volume for low PPB analysis. Automated analysis can be performed using the 7600, 7410D, or 7500D Autosamplers.

Bottle-Vac 清洁

Bottle-Vac samplers are reusable, making them less expensive than other sampling devices, even Tedlar bags. For PPB sampling, the bottles should be ushed with nitrogen or zero air in an oven after the ttings have been removed, then evacuated after the ttings are reattached. Fittings can be heated, ushed and stored under nitrogen in a separate container (See page 13). For PPM sampling, the valves and bottles can simply be heated in an oven overnight with the fittings removed, then reassembled for immediate evacuation and delivery to the field.

应用 - 所有Tedlar Bag使用，加上：

● 室内空气质量
● Ceiling / STEL / TWA监控
● 逃逸排放
● 垃圾填埋气/土壤气
● 栅栏线监控
● 呼吸分析
● 模具检测（MVOC）
● 气体中的杂质
● 烟气

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