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.
Replacement liners for JMC 18 inch Zero Contamination Sampling Tubes available at lower prices when purchased in larger quantities. Click on details for more information.
Already have a Bosch 11316 Percussion Hammer or a Bosch 11245 Rotary Hammer or a Bosch RH1255VC Rotary Hammer? Then all you need is this adapter for your JMC Environmentalist's Sub-Soil Probe PLUS.