Hi!
Im sure this probably sounds simple, but I just got a refractometer and I do not know how to use it. I think you just put the water on the blue face plate, but how many drops? Also does it need to be calibrated and if so how do you calibrate it?
Thanks.
Im sure this probably sounds simple, but I just got a refractometer and I do not know how to use it. I think you just put the water on the blue face plate, but how many drops? Also does it need to be calibrated and if so how do you calibrate it?
Thanks.