We are seeking a **Laboratory Assistant** to support laboratory routines, ensuring organization, quality, and reliability in processes. **Main Responsibilities:** * Organization and maintenance of the laboratory * Preparation of environmental matrix samples (water and sediment) * Organization and control of chemical inventory * Registration of chemicals in the system * Preparation of solutions * Weighing of reagents and samples * Entry of results into the internal system * Preparation of sample containers * Washing and organizing of glassware **Requirements:** * Completed high school education (technical course in Chemistry, Environmental Science, or related fields is desirable) * Driver’s license category B * Organizational skills, attention to detail, and responsibility Employment type: Full-time CLT contract Salary: R$1,728.00 per month