The FSTest Deltamethrin Rapid Test Kit is a professional-grade, rapid screening tool engineered for the qualitative detection of deltamethrin residues in fresh fruits and vegetables.

Deltamethrin is a highly potent pyrethroid insecticide widely used and heavily monitored in global agricultural production. By eliminating the immediate necessity for complex, expensive laboratory infrastructure, this field-ready assay simplifies sample pesticide extraction into a streamlined room-temperature workflow, serving as an essential first-line defense in fresh produce logistics, supply chain collection points, and corporate quality compliance screening programs in just 6 to 8 minutes.

2. Key Benefits

High-Speed Field Turnaround: Complete the entire screening assay workflow and achieve highly reliable visual result readouts within just 6 to 8 minutes post-sample-preparation.
Dynamic Matrix-Specific Detection Limits: Calibrated to precisely target regulatory cut-off thresholds ranging from 0.1 mg/kg up to 2 mg/kg by adjusting simple sample supernatant dilution ratios.
Comprehensive Fruit & Vegetable Adaptability: Officially validated across apple, pear, radish, carrot, tomato, eggplant, pepper, legumes, celeriac, taro, grape, strawberry, cabbage, cauliflower, broccoli, spinach, pakchoi, Chinese cabbage, sweet potato, celery, romaine lettuce, crown daisy, and leaf lettuce.
Fully Self-Contained Kit Architecture: Arrives fully packed with 10 test cassettes, 10 microwells, 10 centrifuge tubes (2 mL), 50 mL dedicated extracting solution, and 10 sampling bottles (30 mL).
Safe & Non-Toxic Formulation: Supplied with a specialized extraction solution certified as safe and non-toxic for operators, allowing waste materials to be treated as general chemical waste.

3. Technical Specifications & LOD Spectrum

Product Name	Deltamethrin Rapid Test Kit (Colloidal Gold)
Target Analyte Compound	Deltamethrin (CAS: 52918-63-5 \| C₂₂H₁₉Br₂NO₃ \| 505.2 g/mol)
Detection Principle	Competitive Lateral Flow Immunochromatography
Pack Size	10 tests / kit
Assay Run Time & Volume	6–8 minutes (results invalid after 8 minutes); 100 µL final prepared solution
Storage & Shelf Life	12 months sealed at 4–30°C in a cool, dry place (Do not freeze)

Matrix-Specific Dilution Guide & Target LOD Spectrum (X & Y Dilution Protocol)

Applicable Agricultural Produce Matrix	Targeted LOD (mg/kg)	Supernatant X (µL)	Extracting Solution Y (µL)
Apple, pear	0.1 mg/kg	200 µL	0 µL
Radish, carrot, tomato, eggplant, pepper, legume vegetables, celeriac, taro, grape, strawberry	0.2 mg/kg	100 µL	100 µL
Cabbage, cauliflower, broccoli, spinach, pakchoi, Chinese cabbage, sweet potato	0.5 mg/kg	100 µL	100 µL
Celery, romaine lettuce, crown daisy, leaf lettuce	2.0 mg/kg	100 µL	400 µL

4. Applicable Sample Types

Extensively validated across diverse fresh produce categories:

Pome Fruits & Berries (Apple, pear, grape, strawberry) Solanaceous & Legume Vegetables (Tomato, eggplant, pepper, legume vegetables) Brassica & Leafy Greens (Cabbage, cauliflower, broccoli, spinach, pakchoi, Chinese cabbage, celery, romaine lettuce, crown daisy, leaf lettuce) Roots, Tubers & Rhizomes (Radish, carrot, celeriac, taro, sweet potato)

5. Test Procedure

STEP 1

Extraction

Cut fresh sample into 0.5 cm pieces. Weigh 1.0 ± 0.1 g into sampling bottle, add 3 mL extracting solution, shake 2 min, let stand 1 min.

STEP 2

Matrix Dilution

Pipette X µL supernatant into a 2 mL tube, add Y µL extracting solution according to the matrix guide, and vortex 30 seconds to mix.

STEP 3

Microwell & Load

Ensure 20–40°C environment. Pipette 100 µL solution into microwell, mix 3–5 times, stand 3 min. Transfer 100 µL to cassette sample well.

STEP 4

Read at 6–8 Mins

Interpret visual lines strictly at 6–8 minutes. Visual readouts become strictly invalid after 8 minutes due to late chemical shifts.

Visual Results Determination Guide:

Negative (-): Both Control (C) line and Test (T) line develop strong, distinct red bands. Deltamethrin residue is safely below the targeted matrix LOD limit.
Positive (+): Control (C) line develops normally, but Test (T) line is visibly lighter or fails to appear → Deltamethrin residue ≥ targeted matrix LOD limit.
Invalid: Control (C) line fails to show any visible color band. Re-testing with a new cassette is required.

6. Performance & Crucial Operational Controls

Adhere to strict operational parameters to ensure maximum screening accuracy:

Qualitative Screening Purpose: Engineered strictly for qualitative preliminary screening; not intended for precise quantitative concentration evaluation.
Matrix Dilution Accuracy: Strictly execute the X & Y dilution ratio corresponding to the commodity type to calibrate reading against exact regulatory MRL cutoffs.
Strict Time Window: Read visual test results strictly between 6–8 minutes after loading the cassette; results observed after 8 minutes are invalid.

7. Included Components & Auxiliary Equipment

Kit Components Included: 10 Test cassettes, 10 Microwells, 10 Centrifuge tubes (2 mL), Extracting Solution (50 mL) x1, 30 mL Sampling bottles (x10), User Manual.
Required Equipment (Not Provided): Scissors, electronic balance (1.0 ± 0.1 g precision), micropipettes (X & Y µL, 100 µL), vortexer, centrifuge (optional, for turbid extracts), and timer.

Request Samples & Ordering Information

Evaluate the FSTest Deltamethrin Rapid Test Kit in your fresh produce supply chain and export quality assurance workflows. Free evaluation sample packs are available for certified testing laboratories and agricultural exporters.

Email: service@fstestcorp.com | Website: www.fstestcorp.com