Bluelab Truncheon Nutrient Meter for Plant Germination<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Fully waterproof</li><li>Auto on/off function</li><li>No calibration required</li><li>Daylight readable blue LED's</li><li>Provided with EC， ppm 500， ppm 700 and CF scales</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41E3pAyArLL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31jzB8zf3rL.jpg" noproxy>