The choice of diluent is dependent upon the extent of neurolysis desired. The use of higher concentrations of phenol might predispose to a higher incidence of vascular injury. Shelf life exceeds one year when the solution is refrigerated and not exposed to light.
You asked whether a person can get a modification of a child support order that is nearly 20 years old to increase the time period for paying child support by requiring payment until the child reaches an age beyond the age specified in the original order.
Thus, when people use the term age of majority, they are generally referring to when a young person reaches the age where one is considered to be an adult. In some states, child support stops when a child is 18 or graduates from high school, in others, it stops at 21.