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.
He doctored the greens with some bacon, onion, garlic and brown sugar, and found that the greens make a wonderful side dish for barbecued chicken or a grilled steak. If you are prejudiced against canned vegetables, put those thoughts aside and at least give collard greens a try. You won't be disappointed.