PH 7 solution

[hkching]

Hi,

Anyone knows where to get PH 7 (neutral) solution and price?

I need to calibrate my PH Monitor.

Thanks...

[vincegoh]

I have got mine at Seali*e @ Balestier. Quite x at about 7 per packet, I think.

U may want to try out at Sim Lim Tower, I heard that the basement shop have it, but no idea on price. If u do buy it there, inform me the price. Thanks.

[untouchables]

i did some calibration tests and found that distilled and mineral water (those sold for human consumption) can have quite accurate pH value when compared to their labelling. nowadays, i juz use these to calibrate and once in a while, i use those more expensive solution to double check. so far no discrepencies so u can try mineral water... cheap cheap onli.

[Rocks]

i did some calibration tests and found that distilled and mineral water (those sold for human consumption) can have quite accurate pH value when compared to their labelling. nowadays, i juz use these to calibrate and once in a while, i use those more expensive solution to double check. so far no discrepencies so u can try mineral water... cheap cheap onli.

what brand of mineral water you used ? what is the PH value for distilled water and the mineral water you used for your calibration ?

[blueheaven]

I got access to ultrapure water

[SharkBait]

P.R has stocks of PH4. PH7 and PH10 solution.

[flubberina13]

I believe Iwarna too...

[hkching]

Thanks guys for all your help..

Will check out the LFS mentioned...

But will try the mineral water first cos cheap cheap...