Confirmation of Cleaning

Service Areas: Orange NSW, Bathurst NSW, Molong NSW, Millthorpe NSW, Cudal NSW, Canowindra NSW, Blayney NSW, Wellington NSW, and All Surrounding Areas.

Before outsiders check by a free IEP and getting the construction once again to the client, specialists should perform quality control checks to monitor progress and check their work for completeness. A good work practice is to have a different specialist conduct the final quality control check of a section or item. A thorough visual examination of the remediation worksite for evident evidence of deposits should be performed. Using bright lighting and examining a surface or item from different angles while performing the inspection will help identify any areas that might require re-cleaning.

Various methods are available to help in identifying non-visible deposits that might remain. Specialists should have an understanding of the limitations of any testing method, including the possibility of false negatives and false positives when using detection aids. These methods may include:

  • Ultra-violet (UV or black) light

  • Hydrogen Peroxide

  • Testing for the presence of adenosine triphosphate (ATP)

Ultraviolet Light

Bright light is known as UV or black light. It can be used to make various bodily fluids become apparent. Urine, saliva, vaginal secretions, and semen deposits become apparent under dark light illumination. These physiological fluids contain fluorescent molecules that help them shine. Blood appears dark without luminol applied, which allows it to shine blue. Unprotected eye exposure to UV-B and UV-C light can cause eye damage. Specialists and workers will wear approved eye protection when UV-B and UV-C light is being used. Unprotected individuals should be kept out of the workspace. Black light brilliant interference may occur for various reasons, including soap cleaner residues.

Hydrogen Peroxide

Hydrogen peroxide is a highly reactive chemical. A 3% concentration appears to be effective for mould detection purposes. At concentrations of 10% or more, it can cause severe bleaching of skin, hair, and other materials. This also increases the risk to specialists and workers and the damage it can cause to metals. Transportation or delivery regulations apply when shipping concentrations of hydrogen peroxide above 9%. If concentrations above 9% are stored at too high a temperature (for example, the back of a hot truck), or if the liquid evaporates, a white powder forms. This powder is a highly reactive chemical that can become hazardous.

Adenosine Triphosphate (ATP) Detection

ATP is a substance that is found in all cells and organic matter. A method for testing for the presence of ATP has been developed that uses the chemicals luciferin and luciferase. These are the same chemicals that make fireflies glow. The test method involves swabbing a designated test area with a premoistened cotton bud that has a lysing agent which causes cells to burst open, releasing their ATP. When the swab with the released ATP is placed in the reagent solution, it begins to glow. This emitted light can then be measured by a device called a luminometer.


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