d42zero
Well-Known Member
Hi,
I purchased a cheap TDS meter from eBay to check my nutes... the 2.76 storage solution arrived today so I thought I would test readings and I got some weird results. The solution is 2.76 millisiemens/cm and the meter reads microsiemens/cm so it *should* read 2760μS/cm in the storage solution (at 25degC according to the label), but it reads a little over 3000 at exactly 25degC. It reads much lower than this at lower temperatures; is it normal for the temp to make a huge difference? Readings at 19degC were down around 2000.
PPM reading was 1088 at 19degC and almost 2000 at 25degC which doesn't line up with any conversion charts.
There seems to be no option to calibrate this meter.
Is there an explanation for this or have I just got myself a crappy dud meter?
Thanks
I purchased a cheap TDS meter from eBay to check my nutes... the 2.76 storage solution arrived today so I thought I would test readings and I got some weird results. The solution is 2.76 millisiemens/cm and the meter reads microsiemens/cm so it *should* read 2760μS/cm in the storage solution (at 25degC according to the label), but it reads a little over 3000 at exactly 25degC. It reads much lower than this at lower temperatures; is it normal for the temp to make a huge difference? Readings at 19degC were down around 2000.
PPM reading was 1088 at 19degC and almost 2000 at 25degC which doesn't line up with any conversion charts.
There seems to be no option to calibrate this meter.
Is there an explanation for this or have I just got myself a crappy dud meter?
Thanks