cable & circuit testers
lovibond 194801 orp tester
orp tester br b features b ul li accuracy 20 mv li li item orp tester li li type sd 60 tester li li ph accuracy 20 mv li li ph range 1800 mv li li ph resolution 0.1 mv li li range 1800 mv li li resolution 0.1 mv 1000mv li ul