This extension lets you sample 3 feet deeper than the length of your sampling tube. (6 feet with a 3 foot tube) If you want to sample deeper than that you will need to purchase one or more JMC ESP Regular Extensions in addition to this extension.
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.