The aim is to collect a high quality groundwater sample as efficiently and economically as possible. Bladder pumps are recommended by EPAs worldwide for low flow sampling and groundwater collection for Volatile Organic Compound (VOC) analysis.<\/p>\n

Perceived Negatives<\/h2>\n

Despite their benefits, misconceptions sometimes deter potential users from upgrading to a bladder pump. Perceived complexity of equipment and operation are misplaced on these highly portable, and easy to control instruments.<\/p>\n

Proven Positives<\/h2>\n

Although there may be a high initial capital investment, the bladder pump will pay for itself through time savings and defensible data. The controller is only purchased once, and can be re-used on numerous sites and sampling applications. The air supply can be rented inexpensively. Dedication of customized, pre-assembled systems significantly reduce the time needed in the field for setup. If portable pumps are required, then pumps are easily disassembled for decontamination between sampling events.<\/p>\n

Using low flow methods, only the sampling zone is purged, thus reducing purge volumes, sampling time, and disposal costs. High quality samples with no turbidity or de-gassing also cut down the need for sample filtering or repeated sampling.<\/p>\n

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