Heavy Metal Cd Rapid Test Strip
Brand: FSTest
10–13 mins Rapid Readout Time | 0.025 mg/L Water Cadmium (Cd) LOD | 10 Tests Complete Kit Pack | 12 Months Shelf Life (4–30°C) |
The FSTest Heavy Metal Cd Rapid Test Strip is an immunochromatographic assay designed for the qualitative screening of heavy metal cadmium (Cd) contamination in liquid milk and drinking water.
Utilizing pre-coated recombinant antigens on a lateral flow test strip, the assay provides fast, visual, and reliable results directly observed by the naked eye without requiring complex laboratory instrumentation. With dual-matrix optimization, this kit enables dairy processing plants, water utilities, and field inspection teams to enforce environmental heavy metal safety limits.
Dual Matrix Sensitivity: Optimized extraction and chelation protocol for liquid milk (1.05 mg/kg) and drinking water (0.025 mg/L).
Ultra-Fast Procedure: Simple 1-step sample chelation followed by visual result interpretation in just 10–13 minutes.
User-Friendly On-Site Screening: Pre-coated microwell format minimizes liquid handling errors during field or lab testing.
Clear Visual Interpretation: T-line color intensity inversely corresponds to cadmium concentration for unambiguous pass/fail determination.
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 Cd Rapid Test Strip |
|---|---|
| Target Analyte | Heavy Metal Cadmium (Cd) |
| Detection Principle | Competitive Immunochromatographic Assay |
| Pack Size | 10 tests / kit |
| Assay Time & Sample Volume | 10–13 minutes (results invalid after 13 minutes); 150 µL chelated mixture |
| Storage & Shelf Life | 12 months sealed at 4–30°C in a cool, dry place (Do not freeze) |
| Target Sample Matrix | CAS Registry Number | LOD Threshold |
|---|---|---|
| Liquid Dairy Products (Raw & Pasteurized Milk) | 7440-43-9 | 0.05 mg/kg |
| Water Samples (Drinking Water & Environmental Sources) | 7440-43-9 | 0.025 mg/L |
Optimized for matrix-specific cadmium screening across liquid commodities:
STEP 1 Sample Chelation Pipette 150µL of liquid milk or water sample into a 1.5mL centrifuge tube, add 450µL of heavy metal Cd chelating agent, and vortex to mix thoroughly. | STEP 2 Microwell Incubation Pipette 150µL of the chelated mixture into a pre-coated microwell, mix thoroughly by repeated pipetting, and incubate for 3 min at 20–40°C. | STEP 3 Insert Strip Insert the test strip into the microwell with loading end facing down and start timing immediately for lateral flow development. | STEP 4 Read at 10–13 Mins Interpret visual lines strictly at 10–13 minutes. Visual readouts become strictly invalid after 13 minutes. |
Negative (-): Both Control (C) line and Test (T) line appear clearly. Cadmium concentration is below the LOD threshold.
Positive (+): Control (C) line appears, while Test (T) line does not appear or is significantly lighter than C line → Cadmium concentration ≥ 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 Limitation: Applicable to raw milk and liquid milk; strictly not applicable to yogurt, fermented milk, or heavy acid commodities.
Strict Time Window: Read visual test results strictly between 10–13 minutes after insertion; results observed after 13 minutes are invalid.
Kit Components Included: 10 Test strips, 10 Microwells, Heavy metal Cd chelating agent x1, 1.5mL Centrifuge tubes (x10), User Manual.
Required Equipment (Not Provided): Micropipettes (150 µL), vortexer, and timer.
Email: service@fstestcorp.com | Website: www.fstestcorp.com
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