4 oz of roundup in 2 gal of water will work just fine.
12
According to the Material Safty Data Sheet on Roundup, it has a specific gravity of 1.01. This means the weight of Roundup is 1.01 times that of an equal volume of water. Water weighs 8.34 pounds per gallon, therefore one gallon of Roundup weighs 8.4234 pounds.
The label reads 2.5 ounces per one gallon of water. I mixed this strength one week ago today and spayed. Almost all of the area I sprayed it alive and well.
1 gallon = 128 fluid ounces
128
There are 128 US ounces in a US liquid gallon or 160 UK ounces in an imperial gallon.
There are 128 fluid ounces of any liquid in one gallon.
128 liquid ounces in a gallon of water.
128 ounces.
1 1/2 to 2 ounces of crossbow per gallon of water when doing spot treatment.
1 gallon = 128 fluid ounces 1/12th of a gallon = (128 / 12) = 10 and 2/3 ounces Add 10 and 2/3 ounces of the additive ingredient to 1 gallon of water.
16 ounces = one eighth (1/8) of a gallon.
128 ounces in a gallon.