25pcs/lot PH Buffer Powder 4.00/6.86/9.18 Calibration Point PH Measure Calibration Solution Tool Accessories For PH Test Meter

Semi-finishedproduct : No Battery Included : No High-concerned chemical : None Is Smart Device : No With Backlight Or Not : No Origin : Mainland China Certification : CE

Battery Included: No High-concerned chemical: None Origin: Mainland China