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You use ro water, that's how I was told
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I made another order online yesterday for a refractometer, shouldn't have. I really really cannot afford to buy lights at this time. I still need fish and cuc when the tank is finally ready, whenever that may be...
Yes Nana, it does retract when I touch it Tho, I dunno if that is good or bad or if I should be touching it at all :roll:
You use ro water, that's how I was told
www.amazon.ca
Try there for what you need. You got calibration solution for that refractometer, correct?
You do not want to calibrate with RO water. Purchase a solution, or go to your local fish store to see if they can give you a drop for calibration. Repeat do not use RO water.
from what I understand, you calibrate it to a specific gravity.. and the refractometer gets farther off the further you are from the calibrated SG (so if it's calibrated using 1.00, and you're testing 1.025 it's not going to be very accurate).. so if you want your SG to be as close as possible to 1.025, you need to be calibrated and tested to exactly 1.025... IDK how much difference it really makes, but that's how it was explained to be by someone much smarter than myself. as cheap as calibration fluid is, it's cheap assurance.