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.
Spicy, tangy collard greens accented with black pepper bacon, cayenne pepper and vinegar are a big deal in Brazil. Here is my recipe. Since bacon fat is an essential part of this recipe don't drain it during any of the steps! I say that if your veggies are fattening then eat a lighter main dish!