Lesiba Mabukela

Detail-oriented Laboratory Controller/Technician with 13 years of experience monitoring laboratory equipment to consistently produce compliant quality results. Excellent knowledge of laboratory quality standards and good manufacturing practices (GMP). Work exceptionally well in deadline-driven environment through prioritization and self-management.

Laboratory Controller - Sable Laboratories - Midrand

(2024-02 - 2026-06)

• Calibration, verification and preventative maintenance of laboratory instruments/equipment.
• Preparation of monthly schedule for laboratory equipment.
• Performance qualification of new instruments/equipment.
• Monthly preventative maintenance of HPLC's and system checks.
• Updating and/or writing new instrument SOP's using manufacturer manuals and current USP guidelines.
• Troubleshooting laboratory instruments under breakdown.
• Creation of instrument methods for potentiometric titrator, Karl Fischer, Atomic Absorption Spectrophotometer, Dissolution Baths and Disintegration Tester.
• Conducted workplace compliance training to reduce liability risks.
• Developed procedures for testing instrumentation used in production processes to ensure quality control compliance with applicable regulations.
• Coordinated with vendors for timely delivery of replacement parts or consumables needed for calibration activities.
• Managed new instrument documentation setup and calibration database integration.

Laboratory Analyst / Instrument - Adcock Ingram - Wadeville, Germiston

(2016-03 - 2024-01)

• Calibration, verification and preventative maintenance of laboratory instruments/equipment.
• Preparation of monthly schedule for laboratory equipment.
• Performance qualification of new instruments/equipment.
• Updating and/or writing new instrument SOP's using manufacturer manuals and current USP guidelines.
• Periodic preventative maintenance of HPLC's ensuring the systems are flushed and working optimally.
• Troubleshooting laboratory instruments under breakdown.
• Preparing laboratory reagents and volumetric solutions and standardization using potentiometric titrations.
• Creation of instrument methods for potentiometric titrator, Karl Fischer, Atomic Absorption Spectrophotometer, Dissolution Bath and Disintegration Tester.
• Compilation of IQ/OQ/PQ protocols for new analytical instruments.
• Assisted Validation team with the cleaning validation.
• Conducted workplace compliance training to reduce liability risks.
• Developed procedures for testing instrumentation used in production processes to ensure quality control compliance with applicable regulations.
• Coordinated with vendors for timely delivery of replacement parts or consumables needed for calibration activities.
• Managed new instrument documentation setup and calibration database integration.

Laboratory Analyst Temp - Adcock Ingram - Wadeville, Germiston

(2015-09 - 2015-12)

• Conducted testing of raw material samples using analytical instruments such as Karl Fischer Titrator, Potentiometric Titrator, Density Meter, pH Meter, Melting point, UV-Visible Spectrophotometer, FTIR Spectroscopy, Polarimeter, and Conductivity Meter using standard testing procedure and pharmacopoeia methods.
• Visual quality inspection of raw material samples.
• Adhering to the safety requirements of the laboratory.
• Ensuring the cleanliness of the laboratory and working area.
• Preparing laboratory reagents and volumetric solutions and standardization using potentiometric titrations.
• Provided support to the production and receiving departments as required.
• Ensuring compliance with Good Laboratory and Manufacturing Practice.
• Ensuring the correctness of GRV, suppliers' documentations such as COAs before testing.
• Recording of analytical results contemporaneously during testing.
• Participated in the investigation of out-of-specification investigations.

Quality Control Technician - Sealed Air - Germiston

(2013-06 - 2015-06)

• Performed visual and dimensional inspections of components, assemblies, and products to ensure compliance with customer specifications.
• Conducted root cause analysis to identify sources of defects or non-conformance issues in order to prevent reoccurrence.
• Maintained accurate records on product inspection results and reported findings to management team.
• Inspected incoming material for conformity to established requirements prior to acceptance into inventory.
• Assisted with training new Quality Control Technicians on proper procedures for inspecting materials and products.
• Conducted tests on product samples and recorded results.
• Compared samples to standards and specifications by performing detailed measurements and tests.
• Calibrated, validated or maintained laboratory equipment.
• Maintained lab cleanliness and safety standards.

Degree - Analytical Chemistry - Vaal University of Technology (2013-01)

Matric - Tlou Secondary School (2007-01)