Standard Test Method for
Water Content of Soil and Rock In-Place by the Neutron
Depth Probe Method1
This standard is issued under the fixed designation D 5220; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
click below Astm D 5220 – 02 pdf free download