heuerfan Active member Nov 16, 2007 #1 Want to make sure my refractometer is calibrated correctly because i am doing hypo, read that ro/di water is not accurate. Please let me know if you have some forsale or know where i can buy. Thanks, Steven
Want to make sure my refractometer is calibrated correctly because i am doing hypo, read that ro/di water is not accurate. Please let me know if you have some forsale or know where i can buy. Thanks, Steven