Item Description: MISCO AQUAR-H5O Palm Abbe Digital Handheld Refractometer, Seawater Scales, Density, Conductivity, Chlorinity, Salinity, Specific Gravity - Comes with a ARMOR JACKET MADE IN THE USA! INSANE PRICE FOR THE POWER! DID WE MENTION THAT IT IS MADE IN THE USA? IT IS! One BRAND NEW Palm Abbe AQUAR H5O Digital Seawater Refractometer is a professional refractometer for testing seawater, salt water, and brackish ocean water for oceanography, aquaculture, aquariums, desalination plants, and ocean research. The model AQUAR H5O measures seawater salinity in Practical Salinity Units (PSU), Sigma-t Density, Specific Gravity, Conductivity, and Chlorinity. This refractometer is able to overcome many of the limitations of other test methods including chloride titration, specific gravity by hydrometer, and conductivity meters, for testing seawater, salt water, and brackish ocean water. It is this seawater basis that separates the MISCO AQUAR Refractometer from other refractometers that are based on only sodium chloride and water. Although sodium chloride is one of the main components of seawater, there are enough other components that render a regular sodium chloride refractometer inaccurate with respect to the physical properties of seawater. - each unit comes with a 1 Year Warranty (which is better than the other digital Brix Refractometers)! Included are: MISCO Palm Abbe Refractometer, Protective Rubber Armor Jacket, Instruction Manual This is the Refractometer of Professionals! The AQUAR H5O Scales: Scale 1 Fluid: Sea Water; Unit of Measure: Specific Gravity (D20/20); Range: 1.0000 to 1.1180; Resolution: 0.0001; Precision: +/-0.0005 Scale 2 Fluid: Sea Water; Unit of Measure: Practical Salinity Units (PSU); Range: 0 to 155; Resolution: 1; Precision: +/-1 Scale 3 Fluid: Sea Water; Unit of Measure: Density Sigma/t @ 20C; Range: -2 to 116; Resolution: 0.1; Precision: +/-0.5 Scale 4 Fluid: Sea Water; Unit of Measure: Conductivity @ 20C (mS/cm); Range: 0 to 100; Resolution: 0.1; Precision: +/-0.5 Scale 5 Fluid: Sea Water; Unit of Measure: Chlorinity (ppt); Range: 0 to 85.5; Resolution: 0.1; Precision: +/-0.5 The unit runs off (2) AAA batteries on a LARGE PRINT digital LCD display. AQUAR H5O Specs: Temperature Range 0 to 50 C (32 to 122 F) Power Source 2 AAA Batteries Battery Life 5000+ Readings Dimensions 145 x 75 x 37 mm (5.7 x 2.95 x 1.46 in.) Weight 250 grams (8.8 Oz.) International Shipping: International shipping is via either US Postal's Global Priority (Air) Mail, which is $15.00 ($12.00 to Canada) and takes 3-8 business days. Shipping Insurance is an additional $15.00. Questions? Larger orders? Multiple Orders? Prefer a different shipping method? Please feel free to call, fax or e-mail! Other types of Portable Refractometers are available through our Store! Check out our other items! National Industrial Supply 30777 Rancho California #891420 Temecula, CA 92589, USA Sales: 951.308.9269 Fax: 310.833.7306 We prefer Paypal! Froo www.froo.com | Froo Cross Sell, Free Cross Sell, Cross promote, Marketing, listing Apps, Apps, Application