Portable PH Meter Pen high precision PH acidity meter PH monitoring instrument water quality testing equipment Digital LCD Pen
![Portable PH Meter Pen high precision PH acidity meter PH monitoring instrument water quality testing equipment Digital LCD Pen](http://ae04.alicdn.com/kf/H689ee62fc7ab4a99b0eddf479937c44dh.jpg)
sku: 4001150940730
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$6.13
Shipping from: China
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