Going through a basic PPM calculation by volume or by mass will help to cement the concepts you need to understand. For mass, imagine you have 0.98 liters of water with 0.2 g of salt dissolved in it, noting that 1 L of water = 1 kg of mass, so the total mass in the example is ...
recording results on a meter in nephelometric turbidity units (NTU). You must calibrate the instrument to convert between NTU and parts per million (ppm), because
Although recycling may seem like a modern concept introduced with the environmental movement of the 1970s, it's actually been around for thousands of years. Prior to the industrial age, you couldn't make goods quickly and cheaply, so virtually everyone practiced recycling in some form. However,...
Recycling is a pretty simple concept: take something that isn't useful anymore and make it into something new instead of just throwing it away. It can be anything from recycling old paper into new paper, to making an old hubcap into a decorative birdbath. In reality, recycling can get...
What sugars you use will be up to your taste and the recipe. I can say that you should probably stock up on a 10# bag of White sugar. Boil the sugar into water to make a simple syrup and add it to the must. It is a lot easier to mix a liquid into the must than a solid. ...
One tank can make soft water while the other recharges. High-efficiency water softeners run between $500 and $6,000 and are designed to be easy to install and remove, which is good news if you want to take your unit with you when you move. However, unless you are confident in your...
Not all hydrogen is created by the same processes. While the final product is always a clean fuel source, there are numerous ways to make hydrogen. In fact,there’s a color for every methodof hydrogen production. Practically any energy source can be used to ...
Nitrites are pretty bad news. So, in a stocked tank, the level should read 0 ppm (parts per million). The bacteria in an established tank should exist in high enough numbers to break down nitrites the moment they are produced – leading to a zero reading when tested. ...
Log In Sign Up Subjects Science Biology Osmosis How many grams of NaCl do you need to make 100 mL of a 4% solution?Question:How many grams of NaCl do you need to make 100 mL of a 4% solution?Solution Concentration:The concentration of à solution is indicative of ...
(<1000 ppm as per the jedec standard) in the plating/finish. q. does vishay intend to eliminate lead in other areas of the components? a. yes, vishay is in the process of eliminating lead in other parts of the component. for some technologies there currently is no technical solution to...