THESE RESERVOIRS ARE MEANT TO BE USED WITH THE SALT-AWAY MIXING UNIT THEY FIT SALT-AWAY - PART NUMBERS, SAM & SAMI. FEATURES Two different sizes for different size jobs Ideal to have as additional parts for use in more than 1 location Purchase for replacement parts Imprinted with graduation marks for both fluid ounces and milliliters PACKAGE CONTAINS 2 UNITS: Smaller reservoir has capacity of 06 fluid ounces (177 mL).a At Salt-Away&';s dilution ratio of 1:500 or 0.2%, area coverage is 1,450 sq feet (134.71 sq metersa If used with a pressure washer, area coverage is 8,200 sq feet (761.80 sq meter).Larger reservoir has capacity of 12 fluid ounces (355 mL).a At Salt-Away&';s dilution ratio of 1:500 or 0.2%, area coverage is 3,100 sq feet (288.00 sq meter).a If used with a pressure washer, area coverage is 18,200 sq feet (1,690.83 sq meter).