Professional pH Meter Pen Type Water Quality Tester Acidometer PH Acidity Meter for Aquarium Acidimeter Water Measuring PH818

Battery Included：No High-concerned chemical：None Is Smart Device：No Model Number：PH818 With Backlight Or Not：Yes Display Type：DIGITAL Brand Name：GVDA GVDA Model：PH818 Origin：Mainland China Certification：CE,FCC

Battery Included: No High-concerned chemical: None Is Smart Device: No Model Number: PH818 With Backlight Or Not: Yes Display Type: DIGITAL Brand Name: GVDA GVDA Model: PH818 Origin: Mainland China Certification: CE,FCC