Solinst 425 Discrete Interval Sampler Sub-Slab Isobutylene is the standard PID

Isobutylene is the standard PID calibration gas

reducing agitation

MultiLab 4010-1 — single-channel IDS benchtop meter

A complete 415 system includes:

Working Pressure 70°F: psi (bar)

Solinst 425 Discrete Interval Sampler Sub-Slab Isobutylene is the standard PIDThe Solinst 425 Discrete Interval Sampler collects a groundwater sample from one exact depth without mixing it with water from other depths in the well column. Before lowering, the stainless steel sampler body is pressurized through its tubing so water cannot enter it. It is lowered on a suspension safety line to the exact target depth, then the pressure is released (vented). A floating check ball inside the sampler body (PTFE ball, which sinks, at