The FSTest Chlorfenapyr Rapid Test Kit (Colloidal Gold) uses the sandwich lateral flow immunochromatography principle. Its test cassette has a testing window (with invisible T/test and C/control zones before use) for monitoring the assay and reading results.

When treated sample is added to the sample well, the liquid flows laterally across the strip and reacts with pre-coated recombinant antigens. The T line’s color intensity is inversely related to the sample’s chlorfenapyr concentration. The C line always appears to confirm a valid test—by comparing T and C line intensity, the kit indicates if chlorfenapyr is present in the sample.

Core Strengths: Accuracy & Reliability at Its Core

Precision-Driven Design: Engineered for targeted chlorfenapyr residue detection (suitable for cucumber, loofah, ginger, beans), with strict adherence to operational protocols (e.g., standardized sample pretreatment) that minimize error—ensuring consistent, trustworthy results for every test.

Controlled Performance Conditions: The test cassette must be equilibrated to 20-40℃ and placed on a flat surface before use; the experimental environment should maintain 30%-80% humidity, be sheltered from wind, and avoid temperatures above 40℃—critical steps that maintain detection accuracy by eliminating environmental interference.

Valid Result Guarantees: Results are clearly interpretable within 5-8 minutes, and any readings after 8 minutes are deemed invalid—this strict timing ensures only accurate, non-degraded results are used for decision-making.

Stable Storage for Consistent Performance: The kit is sealed in aluminum foil pouches; check for pouch damage before use (damaged pouches may cause incorrect results) to preserve kit integrity, ensuring reliable detection performance during use.

Streamlined Operation for Error-Free Testing

Designed to reduce operational mistakes, the kit follows a clear, step-by-step process:

Sample Pretreatment: Use the recommended extracting solution—vortex or shake the sample mixture for 2 minutes, stand for 1 minute; pipette XμL of supernatant into a 2mL centrifuge tube, add YμL of extracting solution, and swirl to mix (clarification ensures no sample impurities affect test accuracy).

Sample Loading: Precisely handle the pretreated sample (follow X/Y volume ratios for dilution) and add it to the cassette’s sample well, ensuring proper reaction conditions.

Result Reading: Refer to provided examples (e.g., CT/C/OT indicators) for interpretation, with validity limited to 5-8 minutes—removing ambiguity and ensuring correct result assessment.

Key Considerations for Sustained Reliability

Storage Compliance: Store the sealed kit properly (specific temperature range not explicitly stated in provided docs) to avoid damaging components that impact detection reliability.

Operational Hygiene: Maintain a suitable experimental environment (30%-80% humidity, wind-sheltered,<40℃) to prevent factors that could compromise test accuracy.

Pouch Handling: Only remove the cassette from its aluminum foil pouch when ready to use; start testing within 1 hour after unpacking to avoid moisture affecting performance—preventing degradation of detection reliability.