濠仔 wrote: P佬...你個ph錶好唔好用??準唔準架?幾多錢???
P佬 wrote: 濠仔 wrote: P佬...你個ph錶好唔好用??準唔準架?幾多錢??? OK嫁 都算準,不過久唔久要用4/7水cal下 川記買430
濠仔 wrote: 4/7水cal下 <<<咩黎架?未用過唔識咩黎..講解下THX...
P佬 wrote: 濠仔 wrote: 4/7水cal下 <<<咩黎架?未用過唔識咩黎..講解下THX... PH4 及 PH7 測試水,35蚊支,用黎調PH Meter PH數值
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