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.
Louisiana Revised Statue 9:309(C)allows for child support to be paid for a child past the age of majority if the child is unmarried, a full time student in good standing in a secondary school, and dependent on either parent or if the child is a developmentally disabled support may be paid up to age 22 years of age. Being included on Louisiana's Delinquent Payors list, a publicly-available list of individuals who are under a legal obligation to pay child support, yet have not made a payment in the last six months.