Your other hand should keep the cylinder to prevent it from falling. The idea of your eyedropper needs to be resting in opposition to the interior surface area of the cylinder and just under the surface area with the solvent layer. I dont ReX or clean any more. there is https://emilianoljjie.blog-a-story.com/17402392/the-fact-about-buy-copyright-online-that-no-one-is-suggesting