tds meter calibration help

[Ehgemus]

I bought a inline tds meter and I was supost to get calibration fluid with it but i did not get it. is there any way to calibrat it with the calibration fluid? I have distilled water that i bought for my refractometer will that work?

 

[Randy Holmes-Farley]

IMO, calibration is unimportant in terms of monitoring whether a DI needs to be replaced. The distilled water won't work for TDS calibration. You either need a good balance to weigh out salt, or you can buy a commercial standard.