Fritz 35PPT Calibration Fluid 37ml cade or on-the-go

or on-the-go

Used as directed

The Blade Refugium includes the following 24 diodes:

Solid-state internal & external water level sensors

Dimensions (w/o clip) = 1" Diameter x 3

Fritz 35PPT Calibration Fluid 37ml cade or on-the-goFritz 35ppt Calibration Fluid Use as a Reference for any Density Measurement Instruments Simple 2 or 3 drop Application Quickly Calibrate to 35 ppt or 1. 026 sg 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.