 So, here we have methanol. This is a type of alcohol. We have a two-normal solution of an acid called hydrochloric acid. And we have here what is called glacial acetic acid. This is similar to the acid found in vinegar. And this is ethanol, 100% ethanol that they call anhydrous ethanol. So, when working with chemicals like these, you need to always protect yourself. Again, you need to have on your gloves. You need to have on your glasses to protect yourself. So, always make sure before you handle any of these chemicals that you'll read the labels properly. So, if you notice the labels for these chemicals are located on the front here. And I'm just going to look at acid, for example. So, this particular chemical, it's an acid, so because of that it is very corrosive. So, it could cause extreme burns. So, you have to be very careful when handling it. And there are some other guidelines to follow also, which you'll find on the bottom. What to do if it actually spills on you. What to do if it gets in your eyes. We'll talk about that. So, just make sure you look at the labels to know how to handle this particular chemical.