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I use blue lab monitors and now that you mention it i don't know if ive read mine on EC mode. I'll check it out tomorrow.Here's what the display on mine looks in uS/cm mode. No loss of precision as it goes to 4 digits. If you're only seeing 1 digit past the decimal in EC mode that's not super precise as you've said. Get a meter that does 4 digit EC with graphite probes and forget all about PPM.
View attachment 18985
EC= not many
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