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點樣 Clean pH meter 的 probe

SaltyDog 文章: 14

1 于 2003-07-08 17:19      I have been using pH meter 999 for 4 months... I only initially calibrated it and it worked very well for 4 months. Suddenly one day, I come back home, the pH=7.3 ! But found to be pH meter problem. I calibrated it again, but it never worked normally afterwards (report pH = 0.3 - 9.6 !). Do I need to buy a new one? Can I clean the probe? How? (because we cannot touch the probe). pls help

RowdyTang 倒吊一番 文章: 52 來自: 將軍澳

2 于 2003-07-09 13:02      我會用牙刷擦個probe

SaltyDog 文章: 14

3 于 2003-07-10 15:56      我用牙刷擦完個probe... 數值跳上跳落 7.6- 8.3 是它玩完?? 茶實pH meter/probe 幾耐要換?? 請大家幫忙...

iczfirz "challenge" 文章: 14186 來自: 我回來了

4 于 2003-07-10 16:04        睇下果兩條電線係咪斷左... 如果係就即係玩完. 問題或承受過 不相信拋下過 最後決定一雙肩膊別太肩膊 三十一畫：此數大吉，名利雙收，漸進向上，大業成就。（吉）

Eric Jim 文章: 145

5 于 2003-08-06 16:12      put the probe into acid bath for 0.5 hour. it should be ok.

SaltyDog 文章: 14

6 于 2003-08-06 16:35      What is acid bath?

catlee 文章: 2602 來自: 有求必應

7 于 2003-08-12 13:36      means put into acidic solution, u may put in the calibration liquid pH4 for hours....or.....用漒水溝淡, 不過好似好恐咁... 試下pH4先, 唔得先漒來啦, 反正如果"certified" 都total lost 架啦.

HowCome 文章: 383

8 于 2003-08-13 17:45      catlee, please explain what is "calibration liquid pH4"... thanks,

catlee 文章: 2602 來自: 有求必應

9 于 2003-08-18 17:48      HowCome wrote: catlee, please explain what is "calibration liquid pH4"... thanks, 即係要來調校pH meter 的水. pH 係standard 的, 有4, 7 同 10 魚街有售. 好似磅咁, 用之前都要set zero la.

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