should you know the sex of your plant before you spray
is a big lever to the success of the this method
if not no biggy as any male will be sterile anyways
so its important to spray more than one plant
measuring the PPM(parts per million is not possible with Silver nitrite stuff used in colloidal silver as its conductive
so bear aware of many fakes of CS about
if you make your own and intend to store use a total black bottle and store in a very dark place
silver used is much the same as used in early photography is very sensitive to light
start spraying a week before she shows sex
good luck