Common questions

A turbidity tube is a clear tube used to visually assess the turbidity, or cloudiness, of a water sample. The sample is viewed against a marker through the water column, and the result can be determined using the tube's scale.

They can be used for field assessment of water clarity and turbidity, including surface-water monitoring associated with construction activities.

Conducting a turbidity tube test is straightforward — collect a sample, fill the tube, check the target, adjust the water level until the cross is no longer visible, then read and record the result. See the full steps on the Turbidity Tubes page.

They are intended for construction and environmental professionals, including residential and commercial developers, contractors, environmental officers and consultants.

Yes. Email Construct Enviro with the quantity you require and provide the construction-site delivery address when requesting your quotation.

Yes. If you require a bulk order for a larger project or multiple sites, contact us with the quantity required and delivery details.

Yes. When requesting a quotation, provide the relevant office or construction-site delivery address so delivery requirements can be considered.

Email constructenviro@gmail.com with the product required, quantity and delivery address, or use the Request a Quote form on the Contact page.

A turbidity tube is a field-monitoring method and should not automatically be considered a replacement for laboratory analysis or other specified monitoring methods. Always follow the monitoring methodology and requirements applicable to your individual project.

In general, an NTU reading of 60 is considered to contain surface water of a lower silt volume. A site-specific environmental permit will outline the maximum number of suspended solids permitted to discharge.

Results should be recorded and interpreted according to the project's monitoring procedures and Construction Surface Water Management Plan, where applicable.