非常易于使用，适合pH 7 ａnd pH 10。打开包然后插入仪器进行校准测量。可用于pH /温度袖珍仪（B01410WA）和pHep电子pH值测试仪（B01138WA）校准。5个/包  上海瑞亿仪器有限公司

Easy-to-use 20 ml packets of each solution for pH 7 ａnd pH 10. Open the packet ａnd dip the meter in to calibrate. Can be used for both the pH/Temperature Pocket Meter （B01410WA） ａnd the pHep Electronic pH Tester （B01138WA）. Five packets of each.