Where to buy calibration fluid for refractometers?

[glenns30]

Where can I buy refractometer calibration fluid locally.

 

[fusionvi]

Use RO water and set it to 0.

 

[DennisF]

Not the best way to calibrate( ro water). You should get the calibration fluid.

 

[melev]

Marine depot sells 35ppt solution.


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