Reply With Quotei got mine at clementi blk328.Originally Posted by hann
Anyone knows which LFS sells the above-mentioned item?
i got mine at clementi blk328.
how much is it? what so good about this brand?
This is the cheapest brand out of those pinpoint pH meter I know.
heard its not very accurate as in when the lights are on, the ph will change.
Oh is it? What is the logic behind this? Do you mean the current drawn by the pH meter will alter the pH display? Or with and without light, the display will show different readings? Otherwise, I see no link between the light and the meter.
Is correct wat. When light on, chemical reaction in the water causes the ph to change. that mean is good and sensitive enough to capture minor changes.
Small as when water is heat up, fishes eat better due to heat and ph change.
Treat your fishes like your baby. The sign and symptom is the same but cannot talk.
Go nature
I agree, when there is light, photosynthesis takes place, CO2 is reduced and ph increases. That means the meter is sensitive.
Is there a need for calibration using liquid solutions over time to maintain the precision?
Your observation is correct, but the conclusion drawn is wrong. I just got my snail brand pH meter this morning and after I put in the probe, the pH is 6.0. The reading throughout the day is stable. However, when my chiller kicks in, the display will either jump from 6.0 to 6.5 or 5.7 and eventually come down to 6.0 within seconds. Same thing happens when my chiller stops kick-in. I wouldn't say the readings are inaccurate because no matter what the display will stabilise within seconds. Unless your pH readings do not return to the original pH readings, it is still correct.
The running of digits are either due to a higher current drawn by another device which is using the same power source or electromagnetic wave transmitted by the other device. Just my hypothesis, may not be right. This might not happen to other brand as they use batteries (no other interference).
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