Coal Concepts has been accredited by the South Africa National Accreditation System (SANAS) according to the requirements of ISO/IEC 17043. The accredited parameters include: Ash determination, Volatile Matter determination, Calorific value, Total Sulphur, Phosphorous, Carbon, Hydrogen, Nitrogen and Ash Fusion Temperatures (reducing atmosphere. These are on the -212um or 65 mesh coal samples.

Click to view our Accreditation Certificate for ISO 17043 (Proficiency testing) | Click to view our Schedule of Accreditation

Click here to view our certificate for  Accredited Reference Material  for ISO 17034

Based in Richards Bay, South Africa, Coal Concepts provides proficiency testing programs to the coal producer and user industries as well as third party commercial laboratories. Proficiency testing is carried out on pulverised coal samples(-212um/65 mesh), Ash samples for major and minor elements in ash, Hardgrove index samples, Abrasion Index samples, Float and Sink determination and Coke samples. In addition to this Coal Concepts produces reference material for coal, ash, HGI and abrasion index analyses. Consulting services are also carried out for laboratory method validations, commissioning of laboratories, vertical and horizontal assessments and bias testing. Coal Concepts also provides training on Basic Statistics and Method Validation, Measurement of Uncertainty, Excellence in Coal Laboratories, ISO 17025 : 2017 – General requirements for the competence of testing and calibration laboratories, Sampling and Preparation of Coal – based on ISO 13909 and ISO 18283.





Dear Ravi,

On behalf of Sibonisiwe Coal Laboratory Services and the team, I would like to thank you for the professional services you have rendered towards obtaining our SANAS accreditation. I would like to specifically thank you for the following:

1. The professional advices you’ve given us after conducting the internal audits, that helped us a lot in clearing the grey area we always had and to rectify the hidden wrongs that we could not pick up ourselves.

2. The professionalism displayed in conducting the validation of our methods. The SANAS auditing team was impressed with the way the our validations were done and the contents of the reports. For your information, all the methods you validated are now accredited.

3. Accuracy in preparing the CRM’s, which were used in the validation of our test methods.

4. The technical knowledge you have on the running of a laboratory helped us in preparing for the initial SANAS assessment, after which we were recommended for accreditation. Our clients are now impressed with the way we are running our laboratory.

You are free to use Sibonisiwe as reference.

Thank you once more and keep up the good work!!

(MD : Sibonisiswe Coal Laboratory Services cc)



Alfred H Knight
Afrisam Dudfield
Afrisam Ulco
Anglo American Coal Goedehoop – North Plant
Anglo American Coal Goedehoop – South Plant
Anglo American Coal Greenside
Anglo American Coal Kleinkopje
Anglo American Coal Landau
Aqua Specto cc
ArcelorMittal Newcastle
ArcelorMittal Vanderbijl Park
Bureau Veritas Inspectorate Laboratories – Alton, Richards Bay
Bureau Veritas Inspectorate Laboratories – Beira
Bureau Veritas Inspectorate Laboratories – Middelburg
Bureau Veritas Inspectorate Laboratories – Moatize
Bureau Veritas Inspectorate Laboratories – Nacala
Bureau Veritas Inspectorate Laboratories – Tendele
Bureau Veritas Testing & Inspection SA – Pretoria
Cotecna South Africa – AMR
Cotecna South Africa – Lurco
Cotecna South Africa – Phola
Cotecna South Africa – Nasonti
Cotecna South Africa – Middelburg
Cotecna South Africa – Mimosa 
Cotecna South Africa – Kangala
Cotecna South Africa – Tselentis
Cotecna South Africa – Umlabu
Cotecna South Africa – VDD
Council for Geoscience
Delmas Coal Laboratory
Eskom Holdings – Arnot power station
Eskom Holdings – Duvha power station
Eskom Holdings – Tutuka
Eskom Holdings – Hendrina
Eskom Holdings – ERID
Eskom Holdings – Kendal
Eskom Holdings – Grootvlei
Eskom Holdings – Majuba
Eskom Holdings – Medupi
Eskom Holdings – Komati
Eskom Holdings – Kriel
Eskom Holdings – Matla
Eskom Holdings – Matimba
Eskom Holdings – Lethabo
Exxaro Grootegeluk
Exxaro Matla
Eyethu Coal – Wilge
Eyethu Coal – Mooifontein
G & W Base and Industrial Minerals
Glencore Boshoek
Glencore Lion
Glencore Lydenburg
Glencore Rustenburg
Glencore Wonderkop
Highveld Lab
GLI Turkey
Institute For Nuclear Sciences – Serbia
Idwala Lime
Intertek – Mozambique
Intertek OSS – Mozambique (*New)
Jindal Mining Kiepersol
Kangra Coal (PTY) Ltd
Lafarge Lichtenburg
Makomo Resources – Zimbabwe
Mafube Coal
Martech – India
Mitra SK – Richards Bay
ML Coal
Mpumamanzi Coal Services
Morupule Colliery – Botswana
Msobo Coal
Noko analytical laboratories – Twistdraai
Noko analytical laboratories – Hakhano
Noko analytical laboratories – Witbank
Noko analytical laboratories – Welgemeend
Richards Bay Minerals – Rio Tinto
Ronewa Lab
SABS Mining and Minerals – Pretoria (CSIR)
SABS Mining and Minerals – Richards Bay
SABS Mining and Minerals – Secunda
SABS Mining and Minerals – Springlake
SABS Mining and Minerals – Sudor
SABS Mining and Minerals – Uitkomst
Sand Pipers Trading Enterprise
Seriti Resources – Kriel Colliery
Seriti Resources – New Vaal Colliery
Sibonisiwe Coal Laboratory Services cc – Middelburg
Sibonisiwe Coal Laboratory Services cc – Mzimkhulu
Sibonisiwe Coal Laboratory Services cc – Clewer
Sibonisiwe Coal Laboratory Services cc – Carolina
Sibonisiwe Coal Laboratory Services cc – Rirhandza
Sibonisiwe Coal Laboratory Services cc – WesCoal Processing
Siza Coal Services – Carolina
Siza Coal Services – Botswana
Siza Coal Services – Kinross
Siza Coal Services – Mooiplaats
Siza Coal Services – Middelburg
Siza Coal Services – NCC
Siza Coal Sevices – Sasol
Siza Coal Services – Wildfontein
Siza Coal Services – Vlakfontein
South 32 – Khutala
Tata Steel Wales – Europe
Umzamo analytical Services – Witbank
Umzamo analytical Services – Doornrug
Umzamo analytical Services – Londani
Umzamo analytical Services – Overlooked
Vitrovian Analytical Services – Delmas
Zululand Anthracite Colliery