PH meter 1,PH range:6.8-7.8 CL range:0.3-3 ... 2,Box size:15*7.8*3cm 3,material:plastic PH meterOur products have passed CE,ISO and ROHS certification.1 ... ,PH range:6.8-7.8 CL range:0.3-3 ... .2.We also supply OEM services,we can print your logo on our products .Of course, some the size of ... not received ,please contact with us, telephone, mail, fax.our logo