Everything site teams and environmental professionals usually ask us before ordering.
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. See the Construct Enviro Turbidity Tube for full specification.
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, including the video walkthrough, on the Turbidity Tubes page.
They are intended for construction and environmental professionals, including residential and commercial developers, contractors, environmental officers and consultants.
Yes. Request a quote with the quantity you require and the construction-site delivery address.
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.
A turbidity tube is a field-monitoring method and can be used in conjunction with laboratory analysis or other specified monitoring methods. Always follow the monitoring methodology and requirements applicable to your individual project.
Results should be recorded and interpreted according to the project's monitoring procedures and Construction Surface Water Management Plan, where applicable.
Readings can vary a little between observers, since it's a visual method. Keep your eye directly above the centre of the tube, roughly 5–10cm from the rim, rather than looking in at an angle. If more than one person takes readings on a project, it's worth occasionally cross-checking results to keep everyone reading the same way.
Yes. Direct sunlight can cause glare that makes water look clearer than it is, while deep shade can make a reading look worse than it is. Use your body to shade the tube while reading it, and remove polarised sunglasses first — they alter how the target looks and can throw off the result.
Check the tube regularly against a clean light source. Scratches, cloudiness or yellowing on the plastic scatter light and can make readings look worse than the water actually is. If it won't polish clean, it's time to retire it — request a quote for a replacement.
Rinse the inside with a mild, non-abrasive detergent and a soft wand — never a stiff brush, which can scratch the plastic. Rinse thoroughly with clean water afterwards, air-dry upside down, and store it out of direct sunlight, ideally in a protective case.
