Does anyone know if this PH meter
eBay: HANNA HI99104 Pocket pH Tester/Meter/Checker, HI 99104 (item 280087502151 end time Mar-04-07 22:32:47 PST)

and this TDS meter
eBay: HANNA Primo TDS Meter, PPM Tester, Conductivity (item 280089627902 end time Mar-08-07 11:44:15 PST)

are any good?
Dr.Hashman Reviewed by Dr.Hashman on . Hanna PH/TDS meters Does anyone know if this PH meter eBay: HANNA HI99104 Pocket pH Tester/Meter/Checker, HI 99104 (item 280087502151 end time Mar-04-07 22:32:47 PST) and this TDS meter eBay: HANNA Primo TDS Meter, PPM Tester, Conductivity (item 280089627902 end time Mar-08-07 11:44:15 PST) are any good? Rating: 5