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.
Not only are they one of the best vitamin E foods, but mustard greens are also high in vitamin K, vitamin A, folate, and vitamin c. Eating just one cup of boiled mustard greens contains about 14% of your daily dietary requirements.We would recommend eating organic mustard greens, if possible.wiss chard is easily one of the healthiest vegetables you can eat on a daily basis. Commonly known to be high in vitamin K, vitamin A and vitamin C, Swiss chard is another food high in vitamin E. Just one cup of boiled swiss chard greens will provide you with almost 17% of your daily recommended values.