Good Laboratory Practices
for taking Turbidity Measurements

• Avoid samples containing air bubbles, coarse debris, or floating sediments—all of these can cause erroneous readings.
• For the highest accuracy, calibrate your turbidity meter with the appropriate calibration standard in each measuring range.
• Etched, scratched, or dirty sample vials scatter light and give inaccurate readings; always use clean tubes that have a protective case or extra long tubes to allow for handling outside the measuring area.
• Wear latex or rubber gloves to avoid smudges or fingerprints on vial surface, and to help keep the surface clean.
• Take readings on smooth sturdy surfaces—vibration can causes errors in your readings.

For a complete list of all our water quality and water testing products, check out our "Water Testing" section and "Water Sampling" section.