RoDi TDS

[ssmtcarlo]

Just got an aqua safe unit. my TDS reeds 4ppm is that normal. The TDS meter says it has +-10 accuracy anybody know

 

[reefman]

mines is +-2
+-10 is a lot
i change my filter when it's above +2.

 

[Zuska]

how can you measure it? I hooked mine up today.

 

[Cibo]

check it with distilled water... The TDS should be 0

 

[vanceny]

Using distilled water may not be accurate for testing tds depending on the source of the water. If you want to make sure that its calibrated correctly then you need a calibration fluid.

Like this one:
http://www.waterfiltersonline.com/detail.asp?product_id=Hanna_Cal-Sol

 

[Buckeye Field Supply]

We have 342 ppm, 800 ppm, and 1382 ppm calibration fluid available. Your meter should have come with instructions re calibration.

I you have troubles, let me know.

Russ @ BFS