Shange - Laboratory Technician - Johannesburg, GP, South Africa

Mabongi Shange

Johannesburg, GP, South Africa


A resourceful, hard-working and dedicated Laboratory Technician with a strong academic background and significant experience in Chemistry Analysis. Possesses excellent presentation skills and can prepare comprehensive documentation and reports as required. Experienced in data processing, is quick to grasp new ideas, technologies and concepts, and is skilled in a range of industry-standard processes. Works well both independently and as part of a team, demonstrating the motivation and organisation required to meet demanding targets. Combines an analytical and professional approach, highly organised, able to work with minimal supervision.


Laboratory Technician

Work History

Laboratory Technician

Modderfontien Laboratory Services

From December 2005

•Leaching tests for soil samples (TCLP and Acid rain extractions).
•Environmental work analysing effluent water and solid samples for elements such as arsenic (SDDC method), hexavalent chromium (UV-Vis), and compound such as cyanide (UV-VIS) and fluorides (ISE – Ion Selective electrode).
•EDTA titrations for Al, Ca and Mg in effluent water samples. Also done oxygen absorbed (OA) and chemical oxygen demand (COD) in effluent water samples.
•Conducting pH, conductivity, alkalinity, turbidity, suspended solids and total dissolved solids on effluent water samples.
•Preparation of solid samples using acid digestions.
•Analysis of solid and liquid samples for various elements on the atomic absorption spectrophotometer (AAS) including low-level selenium by Hydride generation and low-level mercury by Cold vapor.
•Analysis of solid and liquid samples for various elements on the ICP-OES.
•Performing analysis using GC and HPLC techniques.
•Performing analysis using a Segmented Flow Analyzer (SFA) to analyse effluent samples from the factory site, nearby streams and rivers for ammonia, nitrates and nitrites.
•Conducting routine performance check/ calibration of laboratory equipment.
•Gained a good understanding of laboratory practice procedures and quality control procedures principles for ISO 9000 as present company is certified by SABS.
•Have knowledge of the LIMS system.


•Instrumentation: AAS (2 years), ICP-OES (2 years), UV-Vis, SFA (2years), XRF, ISE (2 years), TOC (1year), GC and HPLC (1year).

Qualifications & Certifications


University of Johannesburg

National Diploma Analytical Chemistry

University of Johannesburg

Reasoma Secondary School

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