Does your injection sting? That's not normal. A common sign of low quality BAC water is a pH that is too acidic (below 4.5). This doesn't just cause painit can actively degrade Biodegradation of Di (2 ethylhexyl) Phthalate by Rhodococcus ruber YC YT1 in Contaminated Water and Soil Improved pH stability, heat stability, and functionality of phycocyanin after PEGylation ScienceDirect Astrocytes and Their Role in the Development and Progression of Alzheimer's Disease: Gatekeepers of Neurodegeneration