The Isoton® III 20L Reagent is a high-quality product designed for laboratory use. It comes in a large 20L size, ensuring that you have enough reagent for multiple uses. This product has a minimum expiry lead of 90 days, ensuring that you can use it for an extended period without worrying about it losing its effectiveness. The Isoton® III 20L Reagent is a crucial component in various laboratory procedures and experiments. Please note that it should be used by trained professionals only.