1 In general, the total dissolved solids concentration is the sum of the cations (positively charged) and anions (negatively charged) ions in the water. 2  Parts per Million (ppm) is the weight-to-weight ratio of any ion to water.  A TDS meter is based on the electrical conductivity (EC) of water.
Collard greens may be worth considering for health additions to your diet. These dark-green leafy vegetables provide iron, vitamin K, folate, calcium and the antioxidants lutein and zeaxanthin. They may even help you prevent gout or reduce your symptoms when you eat collard greens in moderation as part of a healthy diet.
Avoid charcoal-grilled meats and animal products that have been cooked at high temperatures - these foods are also abundant in free radicals. Eat plenty of fresh vegetables, such as romaine lettuce, celery, bell peppers, carrots, and tomatoes. Fresh vegetables and fruits are rich in natural antioxidants that can neutralize free radicals in your body. If your life circumstances permit, drink fresh vegetable juices on a regular basis.