The FSTest Methomyl Rapid Test Kit (Colloidal Gold) uses the sandwich lateral flow immunochromatography principle. Its test cassette features 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, 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 methomyl concentration. The C line always appears to confirm a valid test—by comparing T and C line intensity, the kit indicates if methomyl is present.

Core Strengths: Accuracy & Reliability at Its Core

Precision-Driven Design: Engineered for targeted methomyl residue detection, with strict adherence to operational protocols (e.g., standardized sample pretreatment and loading steps) 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, a critical step that maintains detection accuracy by eliminating environmental interference from temperature fluctuations and uneven placement.

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: Sealed storage at 4-30℃ (no freezing) in a cool, dry place preserves kit integrity for 18 months, ensuring reliable detection performance from first use to shelf-life end.

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 1 minute, stand for 1 minute, and centrifuge at 4000 rpm for 3 minutes if supernatant is unclear (clarification ensures no sample impurities affect test accuracy).

Sample Loading: Precisely load 100μL of pretreated sample solution into the cassette’s sample well; no additional standing time post-loading is specified, ensuring efficient progression to result reading while maintaining reaction effectiveness.

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

Key Considerations for Sustained Reliability

Storage Compliance: Always store sealed at 4-30℃ in a cool, dry place; freezing is strictly prohibited to avoid damaging kit components and compromising detection reliability.

Operational Hygiene: After testing, keep the laboratory clean and maintain air circulation in the experimental environment—preventing cross-contamination that could compromise future test accuracy.

Pouch Handling: Although not explicitly stated, it is recommended to only remove the cassette from its aluminum foil pouch when ready to use; exposure to excess moisture may degrade performance (consistent with standard practices for similar test kits).