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.
Itâs not often that we eat plant leaves, but in the case of greens, they provide a wide range of flavor and a nutrient punch. What are greens? Leafy garden greens are more than lettuce. The types of garden greens range from the tops of edible roots like turnips and beets, to ornamental plants like kale and chard. Growing greens is easy and increases the diversity in your diet. What are Greens? Cool season crops suitable for spring or fall, greens are the foliage and leaves of edible plants. Greens are an important part of your salad, but some of the more rustic varieties make excellent cooked vegetables, too. Greens have an important place in the history of the American diet.