Trace minerals can sometimes help increase Saliva Alkalinity, particularly if some of the glands are deficient in some minerals.
The Saliva pH indicates the general effectivenss of the immune system. Below 7.0 pH saliva may be an indication that the immune system is not fuctioning optimally. To remove cancer cells, and perform other important immune system functions, it is important to have all the glands properly nourished. This may require a flush or rinse. The MSA or Meridian Stress Analysis test can give specifics on how the glands are performing, and what supplements might improve gland functioning.
In selecting a full range of minerals and trace minerals, the consideration of how they impact the Urine pH is less important, to my consideration, than how the minerals nourish the glands, and improve the effectiveness of the immune system, overall.