Any time you are working with more than one substance of similar appearance,there is a possibility of a mix-up. To prevent inadvertent confusion, ALL samples inthe laboratory should be uniquely identified. It is best to not use abbreviations to avoid confusion. This is important to help everyone plan their experiments. Too many chemicals are harmful when taken internally so DO NOT eat or drinkin the laboratory.
Many chemicals can cause adverse reactions forthose who are especially sensitive.
If during a laboratory, you experience unusual symptoms such as persistent itching or shortness of breath,immediately stop what you are doing and consult your instructor. If you are pregnant, suffer from allergies, or know of any special sensitivity, please notify your laboratory instructor or the laboratory coordinator before the beginning of laboratory work. Even if you are using gloves, your hands may become contaminated without you realizing it. To avoid accidentally contaminating the food you handle, your eyes, ect.