Entry Routes

There are 2 routes for testing to gain access into the scheme. All testers are required to fill out the application for available here

Testers may be associated to a company, however the certification remains with the tester.


Before joining the scheme, Testers must be:

  • Insured with both Public Liability and Professional Indemnity
    • Note that the limits are not defined by SITMA but by the customers that SITMA members work for. SITMA members must ensure they are suitably covered for all eventualities. 
  • Own or rent all equipment required for testing, which must have had calibration carried out in accordance with PUS007 – Equipment and Calibration Requirements. 
  • Have completed training or have prior experience, as discussed below.

Entry Route 1: Training and assessment

Attend a training course a SITMA Approved Training Partner (ATP), which can be found here.
To complete the course, you must take and pass the exams and practical assessments. Below is the SITMA Task Examination Categories and Knowledge Criteria.

CategoryTask Description No. of QuestionsPercentage Examined
Lodgement & ReportingThe job must first be added on to the SITMA Lodgement portal before midnight of the night before the test to ensure SITMA staff are aware of the job26%
All uncertainties of measurement are recorded in the SITMA portal
Scheme RulesThe tester understands where to find the scheme rules, and has read them prior to starting in the SITMA Scheme13%
SamplingThe tester must correctly interpret the correct sampling regime as defined by the Building Regulations of the home national the tester will be operating in.26%
SamplingThe tester must have the ability to read, understand and interpret information without any external help or support.
CalibrationThe tester must understand the calibration requirements of the scheme, how to book in their equipment calibration and when to do it to ensure testing is only conducted with calibrated equipment. 411%
CalibrationThe tester must understand the frequency of calibration required for their equipment.
CalibrationThe tester must calibrate their equipment before and at the end of each testing day, as well as during any periods where their equipment is either not manned (lunch breaks) or there is a rapid temperature change.
CalibrationThe tester must only use a calibrated calibrator
Acoustic TerminologyThe tester must demonstrate that they understand basic acoustic terminology to ensure that they are able to correctly setup their equipment before each test. This includes, but is not limited to:
– Source and Receive Room
– Reverberation Time
– Background Noise
– Frequency
– Build up Time
EquipmentThe tester must demonstrate what speaker is acceptable in accordance with which standard (box speakers vs multi-direction speakers) and the frequency response expected.26%
EquipmentThe tester needs to understand the need to have individual noise sources driving each speaker, where multiple speakers are used.
SetupThe tester has the ability to setup the speaker correctly, check the speaker is working correctly and producing enough noise.719%
SetupThe tester needs to have the ability to recognise when the speaker is not producing enough noise and why this might be the case.
SetupThe tester understands that unusual situations can be supported by referring to ISO 140-14, and that they have access to a copy at all times.
SetupTesters must measure room volumes with a view to both document the sizes and to calculate the largest room to become the source room
SetupTesters must actively reduce background noise levels by checking the doors, windows, fire alarms, trickle vents are all switched off and closed as necessary to reflect the real-world conditions.
SetupThe tester must understand that the speaker position is to be moved between each source position (horizontally and vertically).
SetupThe impact (tapping) machine is correctly setup in accordance with the standard
MeasurementTesters must also know to conduct their testing when the background noise will not influence the test (i.e. not test when machinery is running outside).822%
MeasurementThe tester must understand that measurements must be taken in accordance with the standard, particularly that the SLM is kept correct distance from walls, ceilings, objects and is away from body.
MeasurementTesters must measure background noise for an appropriate length of time
MeasurementTesters must understand that parallel frequency readings must not be greater than 6 dB in the 125 Hz octave band, 5 dB in the 250 Hz band, and 4 dB in bands of higher centre frequencies.
MeasurementTesters may understand the reasoning for parallel frequencies being controlled
MeasurementReverberation time measurements are correctly carried out using the appropriate number of positions.
MeasurementThe correct number of impact measurements are measured
MeasurementThe tester understands the conditions that are acceptable to conduct impact testing
CalculationsThe testers should have an idea of the calculations for background noise levels and at what point and how the 6dB background rule applies38%
CalculationsThe testers should have an idea of basic acoustics and logarithmic calculations
CalculationsThe testers should have an idea of the sound testing calcualtion, including the way the calculation is built up in components
Performance CriteriaThe testers should have an idea of the performance criteria for airborne tests in England, & Northern Ireland & Wales26%
Performance CriteriaThe testers should have an idea of the performance criteria for airborne tests in Scotland
Performance CriteriaThe testers should have an idea of the performance criteria for impact tests in England, & Northern Ireland & Wales
Performance CriteriaThe testers should have an idea of the performance criteria for impact tests in Scotland

Entry Route 2: APEL (Advanced Prior Experience / Learning)

It is possible to enter the scheme by demonstrating that you have prior experience of the competence level you are aiming for. This is known as APEL. For a tester to be considered for APEL, they will need to have completed at least two of the following four criteria: 

  • Degree in acoustics or acoustics discipline, such as but not limited to: 
    • Environmental acoustics 
    • Acoustical and audio engineering
  • Diploma in Acoustics, issued by the Institute of Acoustics
  • Completed and documented more than 500 sound insulation tests from at least 100 site visits. 
  • Are a member of another sound insulation testing scheme, such as but not limited to: 
    • Association of Noise Consultants

APEL is not a route for testers who have no experience or have been trained in-house. Testers may be requested to sit the exam from a SITMA Approved Training Partner at their cost to prove competence in this instance.

APEL applicants are still required to undergo auditing and assessment before entry to the SITMA scheme is granted.