REMARKABLE PERFORMANCE! Accubrate calibration solution is specifically formulated to calibrate refractometers to accurately measure the salinity of salt water, reef aquariums as well as natural seawater. ACCURATE RESULTS! Our calibration solution is formulated from a high purity blend of salts to produce accurate readings every time. Refractometers must be calibrated often to obtain accurate readings. Note: RO/DI water will not calibrate your refractometer correctly. Always use Accubrate to ensure correct salinity readings - your aquatic friends will love you. EASY TO USE: Our specially designed bottle has a built-in dropper tip which eliminates the need for a pipette. Simply squeeze a few drops of Accubrate directly from the bottle onto the refractometer’s prism slide and you are ready to calibrate your instrument. (Drops come out at a very controllable rate.) LONG-LASTING: You need just 2 to 3 drops of our calibration solution to calibrate a refractometer. Using a few drops means our 60 ml bottle should last a very long time. For best results calibrate the refractometer often to ensure accurate readings. Our AccuBrate solution is specifically formulated to calibrate refractometers to accurately measure the salinity of salt water, reef aquariums as well as natural seawater. Our calibration solution is formulated from a high purity blend of salts to produce accurate readings every time. Our specially designed bottle has a built-in dropper tip which eliminates the need for a pipette. Simply squeeze a few drops of AccuBrate directly from the bottle onto the refractometer's prism slide and you are ready to calibrate your instrument. A refractometer is useless unless you calibrate it often with an accurate calibration solution. You need just 2 to 3 drops of our calibration solution to precisely calibrate your refractometer. Specifications: 35 ppt @ 25°c1.0264 ppt @ 25°c53 µS @ 25°c Directions Step 1.  Shake the bottle well before using. Step 2.  Clean glass prism slide and cover flap with clean fresh water. Step 3.  Use a soft clean cloth to completely dry glass prism and cover flap. Step 4.  Add 2 to 3 drops of AccuBrate calibration fluid on the prism slide. Step 5.  Allow 45 to 60 seconds then calibrate the refractometer to 35 ppt salinity by following the manufacturer’s directions. Step 6.  Clean glass prism slide and cover flap with clean fresh water to remove the AccuBrate solution. Step 7.  Dry with a soft clean cloth.

REMARKABLE PERFORMANCE! AccuBrate calibration solution is specifically formulated to calibrate hydrometers and refractometers to accurately measure the salinity of saltwater, reef aquariums as well as natural seawater. ACCURATE RESULTS! Our calibration solution is formulated from a high purity blend of salts to produce accurate readings every time. Hydrometers must be calibrated often to obtain accurate readings. Note: RO/DI water will not calibrate your refractometer correctly. Always use AccuBrate to ensure correct salinity readings - your aquatic friends will love you. EASY TO USE: Our specially designed bottle has a built-in dropper tip which eliminates the need for a pipette.  Simply squeeze a few drops of AccuBrate directly from the bottle onto the refractometer’s prism slide and you are ready to calibrate your instrument.  (Drops come out at a very controllable rate.) LONG-LASTING: You need just 2 to 3 drops of our calibration solution to calibrate a refractometer. Using a few drops means our 60 ml bottle should last a very long time. For best results calibrate refractometer often to ensure accurate readings. RISK FREE! Does this come with a money back guarantee? YES! Your purchase comes with a full 90 day no-risk, no-nonsense 100% Money Back Guarantee. Either you're thrilled, or we don't want your money! Our AccuBrate solution is specifically formulated to calibrate refractometers to accurately measure the salinity of saltwater, reef aquariums as well as natural seawater. Our calibration solution is formulated from a high purity blend of salts to produce accurate readings every time. Our specially designed bottle has a built-in dropper tip which eliminates the need for a pipette. Simply squeeze a few drops of AccuBrate directly from the bottle onto the refractometer's prism slide and you are ready to calibrate your instrument. A refractometer is useless unless you calibrate it often with an accurate calibration solution. You need just 2 to 3 drops of our calibration solution to precisely calibrate your refractometer. Specifications: 35 ppt @ 25°c 1.0264 ppt @ 25°c 53 µS @ 25°c Directions - Refractometer Step 1.  Shake bottle well before using. Step 2.  Clean glass prism slide and cover flap with clean fresh water. Step 3.  Use a soft clean cloth to completely dry glass prism and cover flap. Step 4.  Add 2 to 3 drops of AccuBrate calibration fluid on the prism slide. Step 5.  Allow 45 to 60 seconds then calibrate refractometer to 35 ppt salinity by following manufacturer’s directions. Step 6.  Clean glass prism slide and cover flap with clean fresh water to remove the AccuBrate solution. Step 7.  Dry with a soft clean cloth. Directions - Hydrometer Step 1. Shake bottle well before using. Step 2. Rinse Hydrometer with clean fresh water. Step 3. Pour Accubrate calibration fluid slowly into hydrometer to avoid bubbles. Step 4. Gently tap hydrometer to release any bubbles attached to the swing arm. Step 5. Read hydrometer at 77 degrees F ( 25 deg c ). You should read a specific gravity of 1.026.