Water levels and samples can be accurately obtained using the following high quality Solinst instruments:
Water Level Measurement
Model 102 Water Level Indicator
The narrow cable Model 102 Water Level Meter and 102M Mini Water Level Meter with a 4 mm (0.157") dia. P4 Probe can be used to monitor water levels in open tubes. The cable is accurately laser marked every mm or 1/100 ft.
Model 103 Tag Line
The Tag Line is ideal to aid accurate placement of sand and bentonite during borehole completion.
The durable cable is laser marked every 5 cm or 1/4 foot.
Depending on your sites depth to water and your sampling protocol, Solinst offers various sampling options.
Model 410 Peristaltic Pump
Ideal for sample retrieval from shallow water levels less than 9 m (30 ft.).
Model 408M 3/8 Dia.
Micro Double Valve Pump
Small and flexible design makes this gas drive pump ideal for delivering high quality samples, in combination with the Model 464 Electronic Control Unit. Flow rates of 20 to 150mL/min make the 408M suitable for low flow sampling applications. Constructed of stainless steel and LDPE for lengths less than 15 m (50 ft.) and PTFE tubing for any depths up to 75 m (250 ft.) applications. This is the only viable option in CMT wells with depth to water over 45 m (150 ft.).
Electronic Control Unit
Durable & easy to operate with the 408M by using the presets and fine tuning capabilities built into the Solinst Model 464 Electronic Control Unit.
Mini Inertial Pump
This Mechanical pump uses 1/4" LDPE tubing. Typical flow rates of 50 to 250 ml/min. Suitable for use to depths of approximately 45 m (150 ft.). If the water level on your site is deeper than 15 m (50 ft.), PTFE tubing is recommended.
A multi-purge manifold can be considered for purging multiple CMT channels simultaneously using Micro Double Valve Pumps in each channel.
Vapor Monitoring & Wellhead Seal Assembly
Channel seal assemblies are available to seal the CMT channels in case of flowing artesian conditions, or for vapor monitoring. If desired, a 3-way valve can be attached to the seal assembly directing vapor to a pressure gauge connected at one end of the valve and a sample vessel at the other.