https://biz.prlog.org/tag/ph-testers/ pH testers - Free business directory on PRLog.Org, latest companies listed first. 60 https://biz.prlog.org/PCE_Instruments_UK/ PCE Instruments is a manufacturer and supplier of precision measuring instruments, including flow meters, pH testers, humidity meters, control systems, borescopes, thermometers, pressure gauges, hardness meters, scales and balances.Mon, 21 May 2012 13:18:25 GMT