We assess, investigate and test soils and construction materials so as to provide optimum solutions – an essential design component, vital for any construction project’s success.

We are SANAS accredited and all undertakings are handled in a professional manner by our well qualified staff.


Does Soillab have SANAS Accreditation?
Soillab is SANAS accredited (T0284).

What is SANAS Accreditation?
An institution called the South African National Accreditation System certifies laboratories in South Africa. The institution certifies laboratories to the International Standard, ISO 17025. Soillab is thus accredited on ISO 17025.

What does it mean to be ISO 17025 accredited?
“This International Standard is for use by laboratories in developing their management system for quality, administrative and technical operations. Laboratory customers, regulatory authorities and accreditation bodies may also use it in confirming or recognizing the competence of laboratories.”


Correct sample submission is the most important part of the testing process. It influences testing, turnaround time and invoicing speed.

Please follow these steps to make sure we provide you with the best possible service.

Step 1:
Identify the correct tests to be carried out on the samples.

Laboratory results provide engineers and institutions with valuable information to make decisions and/or do engineering designs. Ask them what tests they require on the sample. There are hundreds of tests that can be done on a sample, so it is important to be specific.

 Step 2:
Make sure that the correct quantity of a sample is sampled before submitting it to the laboratory. Sampling procedures are listed in the testing procedure and/or TMH 5. Alternatively, the client can make use of the Soillab field team to take samples, but this does have a cost implication.

Each test requires different amounts of sample material. The more tests that are required, the more sample material will be needed. Feel free to ask technical personnel at Soillab for advice on the amount of sample required.

Step 3:
If the client samples the material, then the client must make sure that the correct sampling procedure is followed.

Please note: Each testing procedure has a sample method that must be used when sampling. If samples are sampled incorrectly it might influence the test result produced by the laboratory. It is recommended that an experienced Soillab employee do the sampling for the client.

Step 4:
Mark the samples with some sort of identification information.

A marked sample reduces the chance of it getting lost especially when it is dropped off after hours at the security gate. The more information the better.

Step 5:
Cash Clients: Complete a work request form as thoroughly as possible. Please note that the form consists of two pages.

Account Clients: Complete the same work request form as noted above in addition to a credit application form if you wish to be a new account client. A credit application only needs to be supplied once.

All the required forms can be obtained from the Soillab office.

Step 6:
Cash Clients:
At this stage, the cash clients will receive an invoice, which needs to be paid in full before the result/laboratory data is released to the client.

Account clients: If the credit application was approved, the account clients will receive their results together with their invoice or it will be received at a later stage depending on the scale of the project.

Step 7:
Remaining samples will be discarded because most of the test work is destructive. The client needs to supply more sample material if a re-test is required.

Any special arrangement must be documented (via email or on the work request form) at the beginning of the process. Verbal communication will not suffice with regards to this matter.


Please note that if sampling is done by the client that the correct sampling procedure must be followed specified in the test method.

 This is a list of Soillab tests and expected turnaround times and sample sizes.
Days noted in the list refer to workdays with standard working hours.
Sample size refers to a single sample of the relevant test.
Please contact us if more detail is required.

Please note that reporting times may be influenced by factors like:

  • Weather conditions can influence sample preparation time;
  • Certain test results consist of more than one type of test;
  • Certain instances might require a re-test;
  • A large workload: most laboratories work on a first-in-first-out basis, except if special arrangements are made;
  • Public holidays and Pay-weekends;
  • Unplanned strikes.

Click on table for enlarged view