Durable spear tipped pH sensor for soil pH measurements, Sensorex S175CD/BNC PEI Body Spear Tip Piercing pH Electrode with BNC Connector, 0 to 14 pH
</br></br>

</br></br></br></br></br></br></br></br></br></br>

</br></br></br></br></br></br></br></br></br></br>
<img src='http://ecx.images-amazon.com/images/I/31Ci9IwQvZL.jpg'></br>