Anyone know where i can buy Salinity Calibration Fluid?

[heuerfan]

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

 

[DEXTER SOLIS]

I might have some, PM me if you want to swing over.

dex