pH pen - i just got mine today!

brothers, be careful not to rinse the entire device under tap water. mine leaked and was damaged never recover. hope that mine is an unique case

i bought it for $48 . very useful, i can go around and test test water in different places

Originally Posted by tagore

i bought it for $48 . very useful, i can go around and test test water in different places

since urs spoilt, can go buy one again from Y618 lo...

Originally Posted by MPeX

Wah... heng u tell me. I already prepare a pepsi bottle to fill up with distilled water da...

I read the instructions of the Hanna box, it says it cannot be used to store the test pen because it is non-ionized (how does it affect actually, these ions?), no mention about calibration can use or not.. better dun take this kind of risk...

These ions if present will actually affect the accuracy of the readings. Guess you gotta get those buffers instead, no choice.

Originally Posted by ZhiQiang

can use boiled water instead of distilled water???

No you can't.

Originally Posted by ZhiQiang

Oh ok...

Very hard for people like me to get distilled water leh... Unless buy from supermarkets... I think i have seen bottles of distilled water for sale in ntuc before...

The thing is, distilled water supposedly cannot be used for calibration or storage. Must specially go buy pH7.0 special solution to do so...

I also dunno why... *shrug*

Originally Posted by ZhiQiang

since urs spoilt, can go buy one again from Y618 lo...

bought trans instrument aqua 1 monitor.

hey buffer solution is selling for 6-8 i think

Originally Posted by tagore

brothers, be careful not to rinse the entire device under tap water. mine leaked and was damaged never recover. hope that mine is an unique case

I made that stupid mistake on day 1.. run the ENTIRE device under running tap water.

Heng i realized after a few seconds that the device isn't waterproof (juz suddenly hit me!), and quickly remove the battery compartment on top and use hairdryer blow it dry... *sweat*

Originally Posted by tagore

bought trans instrument aqua 1 monitor.

hey buffer solution is selling for 6-8 i think

Small pack i got it for $3, bigger bottle (about the size of a brylcream container) $5... from petmart.

Y618 sells it for $2, but no stock da...

Originally Posted by MPeX

The thing is, distilled water supposedly cannot be used for calibration or storage. Must specially go buy pH7.0 special solution to do so...

I also dunno why... *shrug*

oh ok... now i know...