Controlling ducting deposits and monitoring their build up is essential to maintain hygiene standards and reduce fire risks in heating and ventilation systems.
Deposit Thickness Testing is an approved technique that is used to assess the level of deposit build up within ventilation ductwork.
Deposit Thickness tests provide a reliable and quantitative way of measuring the degree of cleanliness of your ductwork, which in turn will help to determine when and how frequently cleaning is likely to be required in order to keep your ventilation quality up to a high standard.
The TR/19 standard specifically addresses the need to measure the build up of deposits and specified a set of uppoer limits withing Section 5 based on good practice.
TR19 Section 5 Surface Deposit Limits, Extract from Table 5
| System Type | Surface Contamination Limits | Test Method |
| Extract | Deposit Thickness Test | |
| Re-circulation | Deposit Thickness Test | |
| Supply | Deposit Thickness Test |
The measurement is typically made using equipment specifically designed for the purpose of measing deposit thicknesses in ventilation systems. The system uses a non-contact measuring tip contained within the instrument to measure the deposit thickness to an accuracy of just a few percent.
It is particularly useful to run the deposit thickness test on a specific test area, before and after cleaning.
If your would like to find out more about Deposit Thickness Testing and how it can be applied as a part of your overall ventilation hygiene regime, then call us for anformal discussion on 0870 6092080 or click here to email us.
