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Dosing: 1 drop per 200L
Equipped with robust anti-scratch glass
you can sustain the effectiveness and quiet operation of your filtration system
making it integral to routine partial water changes
as well as any standard 4"/10cm filter bag holder
Fritz 35ppt Refractometer Calibration Solution tank-only Dosing: 1 drop per 200LPre 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. Directions & Dosage Shake bottle well before application. Ensure the refractometer prism surface is clean, wipe with distilled or RO water if necessary and dry
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