6. Safety and waste management

Safety and waste management is very important and included in the quality management system. All Material Safety Data Sheets (MSDS) for every chemical used were printed out and kept in a designated file for reference. The information is used for self-awareness and protection, waste labeling and in any spillage incidences. Wearing proper personal protective equipment (PPE) should be a culture in the urinary iodine laboratory.

## 6.1. Safety

One of the chemical used in the UIMM is arsenic (III) oxide. It is categorized as highly toxic. Thus, safety precautions ought to be made along the way from purchasing, storage, analytical stages until waste disposal. The safe procedure to weigh arsenic is as discussed below as reference to all operators. Its storage should be in a locked containment with records of its date and time it is being taken out and name of the operators handling it.
