- Handling and following up on all complaints from customers that can be resolved in accordance with standard operating instruction (SOI) and standard operating procedure.- Conduct reviews of competitors' product quality compared to the quality of products from the company in order to improve the quality of the company's products.- Perform regulatory compliance products requested by customers both internal assessment and external assessment.- Develop test methods in accordance with the customer's application.- Create reports on the product quality review, a report on the development of test methods, and other statements that relate to technical services. Store and archive all recordings and data technical support systematically into the file so that the information is easily found and updated.- Controlling execution by means of instrumental analysis and verify the results of the analysis in order to run smoothly and accurately in accordance with standard operating instruction (SOI) and standard operating procedure (SOP).- Control and provide motivation to subordinates to be more productive, have good teamwork, and good attendance record, including briefing and mentoring.- Maintain and control procedures in coordination with the technical services to minimize QSO findings during internal and external audits and to follow up on these findings. Knowing and understanding the ISO 9001, ISO 14001, and OHSAS 18001 SMK3 applicable, related to the regulation of our department as well as the conduct and implementation systems to support compliance with these regulations.- Identify potential environmental pollution and take precautions to minimize the potential for it to appear.

Perform testing of samples received by the laboratory quality assurance to determine properties of chemical samples in accordance with the parameters that have been defined.Principal Accountability :- Prepare test solutions, compounds, and reagents for laboratory personnel to conduct tests.- Analyze organic and inorganic compounds to determine chemical and physical properties, composition, structure, relationships, and reactions, utilizing chromatography, spectroscopy, and spectrophotometry techniques.- Direct, coordinate, and advise personnel in test procedures for analyzing components and physical properties of materials.- Record and report record the results of sample testing that has been done to the supervisor laboratory quality assurance.- Maintain cleanliness and perform periodic maintenance on lab equipment to maintain the equipment and keep the accuracy of the test results.