Member Makhubela

· Performed accurate analysis of samples using authorized test methods and procedures

· Produced and recorded traceable, verifiable, analytical results and other relevant data

· Followed ISO 17025:2017 quality system requirements

· Reported results that exceed laid down limits to the laboratory supervisor/national laboratory manager

· Identified any quality departures from the quality policy or procedures of the laboratory and initiated actions to eliminate, prevent or minimize such departures

· Provided laboratory test reports to technical officers and conformed to quality management system

· Maintained quality and safety standards as well as tidiness in the laboratory

· Performed relevant administrative duties in respect of samples, stocks and reports

· Participated in inter laboratory proficiency testing schemes and conducted CAPA report when results were unsatisfactory

.Participated in regular audits to maintain compliance with regulatory standards and ensure laboratory safety protocols were upheld

· Performed health and safety representative duties in the laboratory

· Calibration and Operation of laboratory instruments such as pH, EC, ORP, Flashpoint, moisture analyser, oxidizing tester, and colorimeter

· Colorimetric analysis of heavy metals, nitrates, chromium, and cyanide using MQuant and Quantofix test strips.

· Ensuring that the correct samples are used and recorded.

· Preparation of the silver disk for deposition and preparation of blank for monitoring of contamination in the lab while control is prepared for reproducibility of the method.

· Measurement of radioactivity using alpha spectrometer system and data reduction and administration by analysing pulse height of the spectrum to produce accurate results.

· Determination of chemical yield using gross alpha beta and measurement of radium activity in alpha spectrometer equipment.

· Preparation of radium from the liquid and formation of barium sulphate precipitate.

· Preparation of Uranium and Thorium standards and preparation of Sarm-19 and Urem-04 reference materials.

· Preparation of solid samples to be analysed by Delayed Neutron counting and Instrumental Neutron Activation Analysis.

· Sealing of samples inside HDPE containers with Ultrasonic welding.

· Determination of the uranium and thorium content of solid samples using gamma spectroscopy and spectrum analysis using a pre-set library.

'Maintained a safe work environment by strictly adhering to established safety protocols and guidelines

· Operational management of quality control and quality assurance during night shifts.

· Prepared Quality reports, including analytical reports (for raw materials and finished products), Certificates of Analysis (CoA) for both raw materials and finished products.

· Monitored seam seal integrity, date code and pack fill in packaging. Conducted consumer complaints investigations/analysis, tracked actions and raised a non-conformance report.

· Analyzed powder samples for moisture, pH, active detergent, bulk density, and soda ash using Near Infrared spectroscopy, wet chemistry analysis, pH meter and other laboratory equipment.

· Prepared documentation of the inspection process, which included detailed reports and performance records.

· Calibrated laboratory equipment daily to sustain high levels of reliability and productivity.

· Analyzed sources of quality data and identified quality problems, recommended realistic quality objectives and goals.

· Guided the production team about the quality control issues to enhance the quality of the product and carried out quality control analysis as the sole analyst for a 12-hour shift

.Followed quality standards and procedures to minimize errors and maximize customer satisfaction.

· Performed qualitative and quantitative analysis for new materials, raw materials, in process samples, product non-conformances, contaminants, etc.

· Reduced sample sizes using grinders and extracted wood content from wood samples using Soxhlet extractions.

· Prepared mobile phases for the HPLC-PAD and analyzed wood samples to determine the monosaccharide content using the HPLC.

· Used autoclave to sterilize the wood content samples before analysis with the chromatographic instruments.

· Analyzed wood content samples using UV/VIS to quantify the extracted samples.

· Reported data from experiments and field testing in the form of written reports and presentations to the senior analyst.

· Adhered to safety precautions due to the use of highly concentrated acids and chemicals.

· Served as laboratory assistant during analysis of wood content for lignin using Gas chromatography.

.Participated in regular audits to maintain compliance with regulatory standards and ensure laboratory safety protocols were upheld.