This extension lets you sample three feet deeper provided you have a ESP Sampling Tube and a JMC ESP Master Extension. Regular extensions connect to each other for additional sampling depth capability.
Stainless steel liner 12" long. Although made for the JMC 12" Zero Contamination Tube, these liners will also fit the JMC Environmentalist's Sub-Soil Probe and the JMC 18 inch Zero Contamination Tube when used with Spacers.
The heavy (12 pounds) metal sleeve that moves up and down while pounding the sampling tube into the ground. Fits both the JMC Environmentalist's Sub-Soil Probe and the JMC Environmentalist's Sub-Soil Probe PLUS.