... ISO9001:2000 and have CE Certificate NEW Mini digital accuracy PH meter 1) No need to adjust normally, 2) Easy ... and stable, 4) Easy to carryIt is a new pH meter,which is easy ,portable and convenience to use!You ... it into the tested solution,it will display the pH level for you!could be used both in Lab ... and Home! PH Specifications:Range:0.0-14.0 PHResolution:0.1 ...