• Conducted routine chemical and physical tests on both lubricating and base oils, utilizing ASTM, TMS, and SMS test methods as required. Operated laboratory instruments to ensure products met applicable specifications. Provided support for production traceability and ensured base oils met required specifications• Analyzed internal and external sample claims, and evaluated test results against specification requirements.• Performed periodic verification and calibration of tools, and maintained accurate and systematic records of test results. This facilitated retrieval for troubleshooting, analysis, decision-making, and the preparation of test reports• Systematically labeled and stored retention samples from blending/manufacturing, filling/loading, and incoming materials. This was done for the purpose of subsequent quality verification arising from complaints or other needs. At the end of their respective retention periods, these samples were disposed of in an approved manner• Performed checks and acknowledgements on incoming materials, including chemicals, gases, equipment parts, and other laboratory materials.• Complied with the company’s safety regulations and adhered to good laboratory practices. Ensured good housekeeping was maintained throughout the course of daily work• Knowledgeable and compliant with the plant’s Quality Procedures and Laboratory Work Instructions• performed trial blends and formula calculations for new product development and current product enhancement. Reported quality findings to the development officer• Disposed of retained samples at the end of the period from blending retain, filling retain, additive retain, base oil retains. Filled control retain checklist with suitable sample conditions.• Conducted B3 waste handling and monitoring within the laboratory.• Conducted flush calculations for use in products and monitored flush movement and usage.

• Performed chemical analysis of OBA, Dyes, and Paper Chemicals, from raw materials to in-process products, ensuring compliance with product specifications (SSK).• Coordinated with R&D team to analyze developmental products and actively participated in the process.• Generated and published test reports, including shift reports detailing analysis results.• Operated various laboratory instruments such as HPLC, GC, FTIR, UV-Vis Spectrophotometer, PSA, and auto-titrator.• Maintained a 5R-compliant laboratory environment, emphasizing cleanliness and efficiency.

• Conducted chemical analysis of surfactants, from raw materials to in-process products and finished goods, in accordance with Evonik Sumi Asih product specifications.• Utilized various laboratory instruments, including GC, HPLC, UV-Vis Spectrophotometer, titrator, among others.• Maintained a safe laboratory environment to achieve a zero-accident record.