15 Romanian brands of mineral water were purchased from hypermarket. For each of the 15 mineral waters were determined the content of nitrates. nitrites and pH. The data obtained were compared with the content of nitrates. https://www.roneverhart.com/DPA-d-fine-Slim-Capsule-Headset-Mic-Single-Ear-40mm-Boom-Interchangeable-Black-p7600/