Wastewater/Bioreactor Phosphate Test Strips

SKU: 33817-P

$16.95USD or lower Each

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Quick response Indigo® 0–100 ppm phosphate test strips for wastewater and bioreactor monitoring & are ideal for screening, process checks, Enhanced Biological Phosphorus Removal trend tracking and teaching.

Phosphate monitoring is a critical component of wastewater treatment and bioreactor process control, particularly in systems using Enhanced Biological Phosphorus Removal (EBPR). Indigo® 0-100 ppm Phosphate Test Strips provide a fast, practical method for screening influent and effluent, observing phosphorus trends, and identifying process upsets before they impact treatment performance. Simple dip-and-read testing supports frequent checks without the need for laboratory instrumentation.

We've been selling phosphate test strips since 2009. Buy fully documented Indigo® phosphate test strips, 50 strips/vial. Guaranteed 3 year shelf life (dated back from expiration date "yyyy.mm.dd").
Details Specs Docs Reviews
Details
Discipline Learning Outcomes / Key Features
Chemistry Understand phosphate removal processes, including chemical precipitation and biological uptake in activated sludge systems.
Biology / Microbiology Identify the role of phosphate-accumulating organisms (PAOs) in enhanced biological phosphorus removal (EBPR) and bioreactor nutrient cycling.
Environmental Engineering Assess phosphate levels to monitor reactor efficiency and prevent nutrient discharge violations in wastewater treatment operations.
Public Health / Regulation Recognize how phosphate management reduces eutrophication risks downstream and ensures compliance with discharge standards.

Tips for Best Results

  • Collect samples in clean, non-metallic containers; avoid PVC or metal that can leach contaminants.
  • Allow heavy solids to settle or filter samples (0.45 µm) before testing — particulates can interfere with color readout.
  • Read color within the manufacturer’s recommended time window (usually ~60 seconds) under consistent white light.
  • Test repeatedly and log results (time, sample point, temperature) to detect trends rather than relying on single readings.
  • Store strips sealed in a cool, dry place; humidity and light degrade reagents.
  • If readings approach compliance limits or show unexpected spikes, confirm with instrument or lab analysis.
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Specifications

This Indigo® test strip indicates the presence of phosphate. Results for ranges shown below can be read in 30 seconds.

  • Phosphate is measured in increments of 10, 25, 50 & 100ppm
  • Phosphate strips have a detection limit of 5 ppm.
  • The number of strips (50) vial is approximate.
  • These strips have a guaranteed shelf of 3 years from date of manufacture (indicated by expiration date).
  • Reseal the desiccant lined bottle immediately after removing a strip to ensure 3 year shelf life.
  • Vial must be kept tightly sealed & kept at typical room temperatures.
Documentation

A Certificate of Conformance is available on request after shipment.
Indigo® phosphate test strips are made in USA & calibrated with NIST standards.

Test Strip Documentation
Stability Statement Certificate of Analysis SDS
Indigo Phosphate Test strips 0-100ppm Stability Statement Indigo Phosphate Test strips 0-100ppm CoA Indigo Phosphate Test strips 0-100ppm SDS
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