Sybon Standard Seawater 35 ppt Calibration Solution - 1 oz.
Item # 254711 / Manufacturer Part # srcs-035
The Friscer Standard Seawater 35 ppt Calibration Solution is the standard solution for calibrating your refractometer.
Not accurate 10/9/2015
I checked the bottle I received against another calibration fluid as well as a stock solution prepared with a precision scale to Randy Holmes-Farley instructions.
The Sybon calibration fluid measured at a specific gravity of 1.021 and not the advertised 1.0264.
That is a huge deviation and enough to harm or kill coral. My bottle went in the trash.
works as advertised 2/21/2014
Reviewer: Join the Revolution
agreed with above comment. another company is wayyyyy over priced so I stopped using them years and years ago. I use this to calibrate my refractometer.
priced accordingly 1/27/2014
Reviewer: Hardy Fish
Unlike another brand which charges you an arm and a leg for salinity calibration solution, this product from Sybon works well for your refractometer.
Thank you for selling this.