The Scentroid Vacuum Chambers are easy to use, portable, and cost-effective air sample collection devices. The chamber comes in multiple sizes to fit bags of up to 10L, 25L, and even 50L. A built in rechargeable vacuum pump, creates a vacuum inside the chamber. The vacuum around the air sample bag forces the air sample to enter the collection bag through the stainless steel bulkhead fitting without contacting the sample pump. The wetted surfaces (i.e. surfaces in contact with the sample air) are Stainless Steel and PTFE only. The battery is capable of sustaining more than 75 samples with a single charge and can be charged using 110/220V outlet or a 12V car outlet. The Auto Purge function creates a positive pressure inside the chamber forcing all the air inside the sample bag to exhaust through the sample line. This auto function makes purging, priming, and conditioning a one-step simple process.