Check rivers, lakes, and runoff for phosphate pollution with easy to use Indigo® 0-100 ppm phosphate test strips; ideal for watershed studies, classrooms, and field monitoring.
Phosphates are a major contributor to nutrient pollution, driving algal blooms and oxygen depletion in freshwater ecosystems. Indigo® 0-100 ppm phosphate test strips provide a rapid, low-cost method for assessing surface water and stormwater runoff, helping identify pollution sources from agriculture, lawn fertilizers, and wastewater discharges.
Understand the chemical forms of phosphate in water (orthophosphate, polyphosphate) and their detection through colorimetric strip testing.
Biology
Relate phosphate enrichment to algal bloom formation and oxygen depletion in aquatic ecosystems, illustrating nutrient limitation concepts.
Environmental Science
Evaluate how agricultural runoff, lawn fertilizers, and wastewater discharges contribute to eutrophication and declining water quality.
Public Health
Recognize the indirect human health impacts of phosphate-driven ecosystem changes, such as harmful algal blooms and fish kills affecting food and recreation.
Tips for Best Results
Collect water samples in clean, non-metallic containers to prevent phosphate contamination.
Allow sediment to settle before dipping the strip: test the clear portion of water only.
For low-phosphate freshwater systems, compare results in shaded light to enhance color accuracy.
Keep unused strips sealed and dry: humidity can alter the color reaction.
Record data with temperature and recent rainfall notes for meaningful comparisons between sites.
Related information or images
0-100ppm Phosphate Test Strips 100/vial
Hydroponics & Greenhouse
Wastewater Treatment/Bioreactor
Educational Experiments
Specifications
This strip indicates results at 10, 25, 50 & 100ppm & has a detection limit of 5 ppm.
The number of strips (50) per vial is approximate.
Shelf life is 3 years but vial is lined with a desiccant and if properly sealed, strips can last 5 years or more.
