Correct me if I'm wrong but did i see somewhere here that standards will be available att the swap this weekend? Does it include refractometer calibration fluid?
I read that distilled or r/o water can be off by up to .003. I been using r/o water and haven't had any problems. Just want to compare readings between the 2 incase it is off by alot. I like to keep my salinity at 1.026 so .003 is a big difference.