Fritz 35PPT Calibration Fluid

Pre-measured refractometer calibration solution takes the guesswork out of properly calibrating your instrument - with no need for expensive or unreliable measuring equipment. A refractometer is essential to the saltwater hobbyist for success. Maintain its accuracy by recalibrating regularly.

• Use as a Reference for any Density Measurement Instruments
• Simple 2 or 3 drop Application
• Quickly Calibrate to 35 ppt or 1.026 sg