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24-08-2011, 08:42 AM
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Arofanatic
 Join Date: Dec 2010
Posts: 198
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Where to buy PH 4 and 7 solution for PH Meter Calibration?
Dear sifus,
Using a Dymax P20 test pen which I suspect is out of calibration after long use. Where can I buy the PH 4 and 7 solution in the east side of Singapore? Many thanks in advance. 
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24-08-2011, 09:37 AM
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Arofanatic
 
Join Date: Apr 2002
Posts: 147
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C328 selling
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24-08-2011, 10:31 AM
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Arofanatic
 
Join Date: Aug 2009
Posts: 400
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east side u can try out at sera center.. its located at macpherson road.. or seaview near jalan kayu there...
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26-08-2011, 04:01 AM
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Guest
Posts: n/a
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Seaview have. Look for ph7 buffer solution
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