The product is great. It comes with very simple instructions to finish the product. Though, you will need mL measuring devices to complete the proportions of alcohol and water to the exact specifications. I am a college science instructor. All my students love this demo, science and non-science majors alike. In the box the product come with the bottle filled with the correct density beads and chemically pure salt (pure NaCl), and instructions to add the liquid in the correct proportions. All you have to add is water and rubbing alcohol (isopropanol). The instructions contain a set of instructions for both of the common concentrations of rubbing alcohol. Fantastic product. This is my favorite demo that I own, or have made.
Shipping was very sluggish, so order with ample time before your first usage.
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