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Monitoring water velocity, depth and temperature of water flowing in rivers, streams, open channels and large Pipes, the Starflow QSD uses this information to calculate flow rate and total flow.

The DFM 6.1 Doppler Flow Meter from Pulsar Measurement accurately measures the flow rate of ‘complex’ fluids with suspended solids or entrained air. This clamp-on, ultrasonic non-contacting, flow meter measures…

The TTFM 6.1 Transit-Time Flow Meter from Pulsar Measurement accurately measures the flow rate of fluids in full pipes. This clamp-on, ultrasonic flow meter measures flow from outside a pipe…

…the screen. If we return to the US to review the advantages and disadvantages of low flow sampling the EPA’s: LOW-FLOW (MINIMAL DRAWDOWN) GROUND-WATER SAMPLING PROCEDURES cites many of advantages…

…Drive (VFD). High flow rates for purging, low flow rates for sampling. So the MP1 Pump is ideal for most groundwater sampling and the high flow purging of deep wells…

…hours continuous run time Sample to 60 m depth Low flow sampling or purging of wells Low flow sampling rates to 10 mL/min High flow purging (+/- 7.5 l/min at…

The Flow Probe is a highly accurate water velocity instrument for measuring water flow in open channels and partially filled pipes. It can be used to measure the true average…

Van Walt’s qualified engineers can inspect, service and repair your environmental equipment in our dedicated repairs workshop. We will perform an initial inspection and carry out any maintenance or repairs…

The Geosub 2 Pump & Controller system is a versatile, stainless steel, pumping solution. A DC pump for low flow sampling and high flow well purging. Robust and tested design…

The vanwaltHexPump is a high-quality peristaltic pump for low flow purging and sampling. It is a premium pump made from high-grade components. It is a strong, field-tested, easy-to-use pump for…

The Flow Stick is a mobile measurement system for discharge measurement in watercourses, such as rivers, streams and canals.

The Bladder Pump & Geocontrol Pro is ideal for low flow groundwater sampling. Capable of pumping from 60 m depth. Small, portable, very efficient groundwater sampling package. Includes a built-in…