![Port a probe](https://img.feedandgrain.com/files/base/wattglobalmedia/all/image/2020/09/fg.port-a-probe.png?auto=format%2Ccompress&q=70&w=400)
- Can sample tall bins more than 120 ft. in height, large flat storage structures and grain piles
- Hose lengths can exceed 400 ft. during sampling
- Utilizes a positive displacement vacuum pump
- Aluminum machine threaded probe sections
- Also available in a pull-start version, model 9H
- Another model, the 9HYD, is powered by a hydraulic motor system driven by a truck engine
- Can be combined with an aerial lift