Geotech Double Check Valve Disposable Bailers Size:Case of 24 Double Check GeoBailers .75" x 36" which carry their own calibration

which carry their own calibration and identification data — plug a sensor in and the meter recognizes it automatically

With its user-friendly one-button operation

or three points with automatic recognition of five standard buffers (pH 4

and cylinder size requirements

Geotech Double Check Valve Disposable Bailers Size:Case of 24 Double Check GeoBailers .75" x 36" which carry their own calibrationGeotech Double Check Valve Disposable Bailers use two check balls one at the top and one at the bottom rather than the single bottom check found on a standard bailer. The second check valve seals the top of the bailer as it is withdrawn, so the sample column stays put instead of sloshing or draining back down the well. That means less agitation on retrieval, better sample retention, and reduced loss of volatiles. Molded from virgin polyethylene with a