Ensure nuts and grains are free of quat residues with Indigo® QAC test strips. Protect consumers from allergen cross-contact, verify sanitation practices, and meet HACCP, FSMA, and organic certification requirements.
Sanitation is essential in the processing of nuts and grains, where both microbial safety and allergen control are critical. Indigo® residual quat test strips can detect down to 10 ppm & provide food processors with an easy, reliable way to verify that no sanitizer residues remain after standard following mandated cleaning procedures. This is especially important in facilities that handle allergen-prone foods such as peanuts, tree nuts, wheat, and soy, where consumers are already highly sensitive to contamination risks. By confirming low or no quat residue, producers can reassure buyers, regulators, and allergy-conscious consumers that their products are both safe and compliant with industry & government standards.
All Indigo® Quat (QAC) test strips come in 100 (not 50) strips per pack & 3 year minimum guaranteed shelf life backed by a Certificate of Analysis, Stability & SDS documents as listed below; Certificate of Conformance on request. Be prepared for any health & safety audit or inspection.
The directions on the test strip bottle are for testing liquid quat solutions. Test surfaces for residues by first wetting the strip's testing pad with water (deionized or distilled if available). Then press against fruits, vegetables, cutting boards, utensils, etc. 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 knives, cutting boards, fruits or vegetables.
Swish strip in liquid 5 times & then compare to color chart after 10 seconds for reading at ≤10-30-60-80-100ppm ppm for quaternary ammonium disinfectant concentration.
Test Strip Documentation |
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Stability Statement | Certificate of Analysis | SDS | ||
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Indigo® brand test strips are Made in USA & tested for accuracy using NIST compliant standards. Be prepared for any health & safety audit or inspection.