CPT 15cm² Probe Components

Geoprobe^® manufactures ASTRA CPT cones in both 10 cm² and larger 15 cm² sizes. The 15 cm² cone, with its 44 mm (1.73 in) diameter, offers several advantages depending on soil type:

• Stronger and more durable due to increased diameter
• Less rod friction, which can improve depth in fine-grain soils and clays

Choosing the Geoprobe^® ASTRA CPT system also brings added benefits of in-house manufacturing:

Cone Durability 

The ASTRA CPT neck is more robust, reducing breakage risk.

Fast and Easy Calibration

One week turnaround when you send cones to Geoprobe^® Kansas headquarters for calibration — saving time and money.

Simple User Interface

Software is easy to use with clear buttons and an intuitive interface, helping new operators get up-to-speed quickly.