refractometer

[badassapd]

I am new to this but how do i calibrate a use a refractometer???
I need help with this....

Greg

 

[crox99]

Welcome to MR. Usually you have some instructions with it. You have to put some ro water on the prism and play with the little screw 'till you get the line up or down to 1.0000.

 

[TimberTDI]

You can get away with the RO water but techinically...

taken from Premium Aquatics Website:
Refractometers are listed to be calibrated with RO/DI or Distilled water. There is some new information stating for best results you should use a Salinity Fluid like the American Marine Salinity Fluid. This will yield you much more accurate results.
How to calibrate with Salinity Fluid from American Marine: Take a couple drops and read your unit. You should read 1.0259 salinity or 35ppt. Adjust your unit to match one of these two numbers. Once you adjusted the refractometer is now fine tuned for saltwater salinity/ppt. If you read ro/di after calibration you will have a negative reading and that is completely normal, as the unit is fine tuned now for a saltwater tank.

 

[badassapd]

thanks guys i love this hobby now..

 

[badassapd]

this is a kernco and is measured in brix