电导率标准液 12.9ms/cm，1413us... 上海谷雨电子有限公司

p1Src=//y1.yzimgs.com/uploads/340388/2018612-918266.jpg?watermark/2/text/5LiK5rW36LC36Zuo55S15a2Q5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/300/fill/I0E3QTlBOA==/gravity/Center"