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Old 24-08-2011, 08:55 AM   #1
kutekoi
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Default Where to buy pH calibration solutions in east?

Dear sifus,

Using a Dymax P20 test pen which I suspect is out of calibration because it kept giving high readings for my pond water.

Where can I buy the pH 4 and 7 calibration solutions in the east side of Singapore?

Many thanks in advance.

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Old 24-08-2011, 11:43 AM   #2
issacyeo
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maybe u can try OTF? or there are many more shops/farms in pasir ris farmway as well.
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Old 24-08-2011, 12:20 PM   #3
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Pretty sure you'll be able to find a shop at Pasir Ris farmway which sells them. Try AquaEmpire?
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Old 24-08-2011, 06:39 PM   #4
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Thanks bros isaacyeo and Sunday.

OTF and Mainland only has the pH 7 one. Got both pH 7 and 4 buffer solutions from Sam's Pet @ Marine Parade.

By the way read somewhere that can use Evian as a cheaper alternative for pH 7 buffer but may not be as accurate as it is +/- 0.2
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Old 29-08-2011, 10:01 AM   #5
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Quote:
Originally Posted by kutekoi View Post
By the way read somewhere that can use Evian as a cheaper alternative for pH 7 buffer but may not be as accurate as it is +/- 0.2
oh? where did u get this info? might be useful to many bros here
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Old 29-08-2011, 10:13 AM   #6
kutekoi
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Quote:
Originally Posted by issacyeo View Post
oh? where did u get this info? might be useful to many bros here
Sure
http://www.arofanatics.com/forums/sh...ighlight=evian
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Old 29-08-2011, 01:49 PM   #7
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Where you staying by the way? Most reputable shops will carry ph 7 solution.
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Old 29-08-2011, 07:36 PM   #8
kutekoi
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Quote:
Originally Posted by BENG66 View Post
Where you staying by the way? Most reputable shops will carry ph 7 solution.
Thanks.

For accuracy, better to calibrate using both pH 7 and 4 solutions than just pH 7. But noticed many shops only sell pH 7 buffer solution.
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Old 29-08-2011, 10:15 PM   #9
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have you considered e-bay?
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