This extension lets you sample three feet deeper provided you have a ESP Plus Sampling Tube and a JMC ESP Plus 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.