Although virtually unbreakable, these sturdy pins precision machined from 5/16 inch stainless steel rod can be easily dropped and lost when not seated in a JMC ESP PLUS Master or Regular Extension.
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 Plus Regular Extensions in addition to this extension.
Replacement liner for JMC Environmentalist's Sub-Soil Probe Plus' 36 inch Sampling Tube available at lower prices when purchased in larger quantities. Click on details for more information.
The ESP PLUS pulls a 3 (or 4) foot long by 1.2 inch diameter sample in one plunge. It captures every sample in a plastic liner and can sample to 3 (or 4) feet. Sampling tube is driven by a 12.5 pound drop-hammer (or electric hammer) and retrieved with a foot-operated jack.