Heavy Metal Pb Rapid Test Strip
Brand: FSTest
5–8 mins Rapid Readout Time | 0.005 mg/L Water Lead (Pb) LOD | 10 Tests Complete Kit Pack | 12 Months Shelf Life (4–30°C) |
The FSTest Heavy Metal Pb Rapid Test Strip is an immunochromatographic assay designed for the qualitative screening of heavy metal lead (Pb) contamination in milk, milk products, and drinking water.
Utilizing pre-coated recombinant antigens on a lateral flow test strip, the assay provides fast, visual, and reliable screening results directly observed by the naked eye without requiring complex laboratory instrumentation. Tailored to different liquid dairy and water matrices, this kit allows dairy processors and water quality managers to conduct rapid on-site lead safety audits.
High Sensitivity across Matrices: Tailored detection limits for raw/pasteurized milk (0.02 mg/kg), prepared/fermented milk (0.04 mg/kg), other milk products (0.2 mg/kg), and drinking water (0.005 mg/L).
Rapid On-Site Workflow: Streamlined extraction and chelation protocol yielding visual results within 5–8 minutes.
Pre-Coated Microwell Format: Minimizes reagent measuring steps and ensures operational consistency during testing.
Clear Visual Interpretation: T-line color intensity inversely corresponds to lead concentration for easy visual screening.
Convenient Room Temp Storage: Offers a full 12-month shelf life when sealed and stored at 4–30°C in a cool, dry place.
| Product Name | Heavy Metal Pb Rapid Test Strip |
|---|---|
| Target Analyte | Heavy Metal Lead (Pb) |
| Detection Principle | Competitive Immunochromatographic Assay |
| Pack Size | 10 tests / kit |
| Assay Time & Sample Volume | 5–8 minutes (results invalid after 10 minutes); 120 µL test solution |
| Storage & Shelf Life | 12 months sealed at 4–30°C in a cool, dry place (Do not freeze) |
| Sample Matrix Category | CAS Registry Number | LOD Threshold |
|---|---|---|
| Drinking Water & Environmental Sources | 7439-92-1 | 0.005 mg/L |
| Raw Milk, Pasteurized Milk, and Sterilized Milk | 7439-92-1 | 0.02 mg/kg |
| Prepared Milk and Fermented Milk | 7439-92-1 | 0.04 mg/kg |
| Other Milk Derivatives & Processed Dairy Products | 7439-92-1 | 0.2 mg/kg |
Optimized for matrix-specific lead screening across dairy and water commodities:
STEP 1 Chelating Pipette 50µL sample into a 1.5mL tube, add 350µL Reagent A & 10µL Chelating Agent, vortex 10s. Add 100µL Reagent B & 100µL Diluent, vortex 10s. | STEP 2 Matrix Dilution Water/Raw/Pasteurized milk: direct test. Prepared/Fermented milk: 100µL mixture + 100µL Diluent. Other milk: 100µL mixture + 900µL Diluent. | STEP 3 Microwell Step Pipette 120µL prepared solution into microwell, mix thoroughly, incubate 3 min at 20–40°C. Insert test strip & start timing immediately. | STEP 4 Read at 5–8 Mins Interpret visual lines strictly at 5–8 minutes. Results become invalid after 10 minutes due to post-reaction shifts. |
Negative (-): Both Control (C) line and Test (T) line appear clearly. Lead concentration is below the matrix LOD threshold.
Positive (+): Control (C) line appears, while Test (T) line does not appear or is significantly lighter than C line → Lead concentration ≥ matrix LOD threshold.
Invalid: Control (C) line fails to appear, regardless of T line presence. Re-testing with a new strip is required.
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-Specific Dilution Ratio: Strictly perform the correct Step 2 dilution ratio corresponding to the sample type (prepared milk vs. other milk products) to maintain LOD accuracy.
Strict Time Window: Read visual test results strictly between 5–8 minutes after strip insertion; results observed after 10 minutes are invalid.
Kit Components Included: 10 Test strips, 10 Microwells, Heavy metal Pb reagent A x1, Heavy metal Pb reagent B x1, Heavy metal Pb chelating agent x1, Heavy metal Pb diluent solution x1, 1.5mL Centrifuge tubes (x20), User Manual.
Required Equipment (Not Provided): Micropipettes (50 µL, 100 µL, 120 µL, 350 µL), vortexer, and timer.
Email: service@fstestcorp.com | Website: www.fstestcorp.com
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