Water levels and samples can be accurately obtained using the following high quality Solinst instruments:
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.
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.).
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.