The Dual-Tubed Probe has seamless construction with durable points. Inner tube is rotated to open/close sampling holes. The probe with partitions between holes have closed-end handle, and pockets are emptied individually. Those without partitions have open-ended handle for convenience of emptying total sample. Partition type is USDA approved for grain sampling.
Meets ASTM C 183 and AASHTO T 127 for bulk sampling of hydraulic cement.
