Specifications: Feature: - This dual scale salinity refractometer is used to measure, monitor and control the concentration of salt water and brine, especially useful for aquarium and marine applications. - This high quality refractometer measures on 2 scales, specific gravity (D 20/20) and parts per thousand and replaces your poor quality and difficult to read hydrometer. - With just a couple of drops of aquarium water you know exactly what your salinity is. - This refractometer does not need calibration solutions like some other refractometers. Simply use 'everyday drinking water' to calibrate in 30 seconds upon first receiving or after a long dormant period. - A refractometer is easier and more accurate than a hydrometer for measuring sugars. - Made of sturdy aluminum. Type: Salt (ATC) Ranges: 0 to 100ppt (10 to 30 degrees celsius) 1.000 to 1.070 Refractive Index Resolution: 0.001 Accuracy: +/-0.1% Dimensions: 194 x 38 x 38mm/7.6 x 1.5 x 1.5in Weight: 227g/8oz Package Weight : 250(g) / 8.82(oz) Package Dimensions(Length*Width*High) : 200(mm)*50(mm)*50(mm) / 7.87(in)*1.97(in)*1.97(in) Retail Packaging: Yes, Blister Packaging EPC_INS_30C Package Include: 1 x Calibration Screwdriver 1 x Carrying Case 1 x Plastic Pipette 1 x Manual

• This dual scale salinity refractometer is used to measure, monitor and control the concentration of salt water and brine, especially useful for aquarium and marine applications.
• This high quality refractometer measures on 2 scales, specific gravity (D 20/20) and parts per thousand and replaces your poor quality and difficult to read hydrometer.
• With just a couple of drops of aquarium water you know exactly what your salinity is.
• This refractometer does not need calibration solutions like some other refractometers. Simply use 'everyday drinking water' to calibrate in 30 seconds upon first receiving or after a long dormant period.
• - A refractometer is easier and more accurate than a hydrometer for measuring sugars. /- Made of sturdy aluminum.

This dual scale salinity refractometer is used to measure, monitor and control the concentration of salt water and brine, especially useful for aquarium and marine applications.Salinity Refractometer Aquarium & Seawater - Dual Scale (1.0 to 1.070 S.G.)