QA Lab

Purpose of Job 

Prepares test samples of materials used in production and conducts prescribed physical and chemical tests on samples.


Main tasks

  • Preparation and Grinding of test samples of raw materials and finished products.
  • Drying of all roughage samples and calculation of the moisture content.
  • Working with the NIR machine.
  • Scanning of Roughage samples.
  • Sampling of raw material bins daily and analysing of these samples on the NIR.
  • Performing of the sieve analysis of mash finished products for production.
  • Performing density testing on all incoming raw material trucks.
  • Recording and computing analyses / results.
  • Reporting of all out of specification raw materials and finished products to the relevant departments.
  • Using a laboratory management information system (QAM).
  • Packing and maintaining the lab sample library.
  • Removing samples which are older than 6 months from the sample library.
  • Cleaning of sample bottles (in the absence of the lab assistant) to ensure that there are always bottles available for taking samples.
  • Checking received samples against the security log sheets (in the absence of the lab assistant) to ensure all samples have been received.
  • Maintaining housekeeping in the laboratory.

Knowledge, Qualifications & Experience

  • Matric (Grade 12 Certificate)
  • Relevant certificate or qualification
  • Possession of a valid code 08/EB drivers licence
  • Not less than 5 years experience in a similar position in a Feed Milling environment.
  • Sound knowledge of MS Excel and MS Word.
  • The workings of the ISO, GMP and HACCP Quality systems would be an added advantage.                                           


  • Problem solving and decision making skills
  • Conflict handling skills
  • Communication skills
  • Relationship building and team leadership skills
  • Computer skills (MS Office)
  • Written communication skills
  • Attention to detail 


•    Positive,  pro-active, results-driven attitude
•    Innovative 
•    Highly ethical and principle-driven
•    Committed, dedicated, motivated
•    Self-starter and follow-though
•    Energy, drive, courage and tenacity
•    Required to work with minimum supervision

Applicants must submit a comprehensive CV, with work-related references to

Closing date:    18 March 2024

Please note that only applicants who meet the stipulated minimum requirements will be considered. If you have not been contacted within 2 weeks of the closing date, kindly consider your application unsuccessful. De Heus reserves the right not to make an appointment to the post as advertised.