ATI Elements Reference Supplement 1000 ml.

The ATI Elements Reference contains the natural balance of elements and salinity in its solution to refer to when using at home test kits.  ATI Elements Reference will  also help calibrate hydrometers or refractometers.

• Salinity: 35 PSU
• Carbonate Hardness: 7.5 °dKH
• Magnesium: 1313 mg/l
• Calcium: 421 mg/l
• Potassium: 408 mg/l
• Strontium: 8.1 mg/l