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.
The 3 Secrets to Making Great Greens: Choice, Chop and Layer. A bowl of Collards is just that. Iâve rarely had a great bowl of just Collards. Fine restaurants tend to sear the hell out of collards, and serve them in a heap of grease â which, face it, is just fried food.