Ensure wild organic rice is free from harmful quat residues with Indigo® QAC test strips. Verify sanitation during harvesting, washing, and storage, protect export quality, and meet HACCP, FSMA, and USDA Organic certification standards.
Residual quat test strips (10–100 ppm) provide reliable verification that sanitizing agents used in wild organic rice processing and packaging meet safety standards while leaving minimal residues. Organic food processors face strict regulations, especially for export markets where HACCP compliance, USDA organic certification, and third-party inspections require proof that QAC sanitizers are controlled. These easy-to-use test strips allow rice processors to document sanitizer levels quickly, ensuring both food safety and organic integrity.
Verify sanitizer residues on hulling, washing, and packaging equipment are ≤100 ppm, using Indigo® residual QAC test strips which detect down to 10 ppm.
Rinse surfaces thoroughly after sanitation to avoid chemical residues that could compromise “organic” certification.
Keep inspection logs demonstrating compliance with NOP organic standards and FSMA requirements.
Highlight compliance to build consumer trust in wild rice marketed as clean-label and sustainably grown.
The directions on the test strip bottle are for testing liquid quat solutions. To test surfaces for residues you must first wet the strip's testing pad with water (deionized or distilled if available). Then press against surfaces for at least 10 seconds & then compare against the color chart.
Levels less than "10" ppm are impossible to determine but some organic certifications call for "0" ppm. This is because water alone causes a reading of 10ppm. Read more in our blog on What 10ppm really means? when measured on surfaces of machinery, knives, cutting boards, fruits or vegetables & so on.
Related information or images
Residual Quat 10-100 ppm
Berries
Dairy-Cheese
Fermented Foods
Grains-Nuts
Leafy Greens
Microgreens-Sprouts
Specifications
Swish strip in liquid 5 times & then compare to color chart after 10 seconds.
Read ≤10-30-60-80-100ppm ppm for quaternary ammonium disinfectant concentration.
Indigo® quat test strips have a guaranteed minimum 3 year shelf life but desiccant lined vials allow for 5+ years.
Store at 20-30C, in a dry place out of direct sunlight.
Indigo® QAC test strips are calibrated for Oasis 146, see details.
Consult your supplier if any special testing is necessary for their formulation.
Solution temperatures from ~30-45C can cause strips to read up to ½ unit a chart unit higher.
Temperatures above 45C can shift the results 1 chart unit higher. Testing at room temperature
Hard water (above 500 ppm) can cause the strips to read high by up to 1 chart unit.
The number of strips (100) per vial is approximate.
