Phosphate Rapid Test Kit
Brand: FSTest
3 mins Rapid Readout Time | 2 g/kg Strict Phosphate LOD | 10 Tests Complete Kit Pack | 12 Months Shelf Life (4–30°C) |
The FSTest Phosphate Rapid Test Kit adopts a chemical colorimetric method for the rapid determination of phosphate levels in seafood and meat samples.
Phosphates are widely used in food processing as moisture retainers, acidity regulators, and stabilizers; however, excessive long-term intake presents health risks. In this assay, phosphates in the sample extract react with chromogenic reagents to produce a blue complex, where the color intensity directly correlates with phosphate concentration, allowing simple visual comparison against the supplied standard colorimetric card.
Rapid On-Site Screening: Delivers visual colorimetric concentration results within just 3 minutes of reaction time.
Broad Food Matrix Applicability: Optimized for various seafood species (mackerel, squid, shrimp, pangasius) and meat/poultry tissues.
Simple Sample Extraction: Convenient aqueous extraction protocol using purified or distilled water with minimal preparation steps.
Visual Color Scale Comparison: Allows semi-quantitative analysis using standard colorimetric matching without complex instrumentation.
Convenient Light-Protected Storage: Offers a full 12-month shelf life when sealed and stored at 4–30°C in a cool, dry, and light-protected place.
| Product Name | Phosphate Rapid Test Kit |
|---|---|
| Detection Principle | Chemical Colorimetric Assay (Blue Complex Formation) |
| Pack Size | 10 tests / kit |
| Assay Reaction Time | 3 minutes |
| Storage & Shelf Life | 12 months sealed at 4–30°C in a cool, dry, and light-protected place (Do not freeze) |
| Target Analyte Compound | Detection Method | LOD Threshold (g/kg) |
|---|---|---|
| Phosphate (PO₄³⁻ Additives) | Blue Complex Colorimetry | 2 g/kg |
Optimized for semi-quantitative phosphate screening across seafood and meat matrices:
STEP 1 Extraction Chop/homogenize 100g sample. Weigh 1g into 50mL tube, add purified water to 50mL mark, mix 2 min, let stand 5 min. Use supernatant. | STEP 2 Reagent Dissolution Take tube with Phosphate Reagent A powder. Add deionized water to 4mL mark using 3mL dropper. Add 2 drops test solution using 0.2mL dropper & shake well. | STEP 3 Chromogenic Reaction Add 3 drops Phosphate Reagent B into the 5mL tube and mix thoroughly. Allow to react for exactly 3 minutes. | STEP 4 Color Comparison Place tube against white background, open cap, observe blue color development from tube opening, and compare with colorimetric card. |
Color Scale Matching: Compare the intensity of the blue color in the reaction tube directly against the phosphate standard colorimetric card to determine phosphate concentration range.
High Concentration Dilution: If the blue color exceeds the highest color scale value on the card, dilute the test solution appropriately, retest, and multiply the final reading by the dilution factor.
Adhere to strict operational parameters to ensure maximum screening accuracy:
Semi-Quantitative Screening Purpose: Engineered for rapid semi-quantitative prescreening and preliminary field audits.
Water Quality Requirement: Strictly use deionized water for Reagent A dissolution and purified/distilled water for sample extraction to prevent background phosphate interference.
Viewing Angle Precision: Open tube cap and observe blue color development vertically from the tube opening against a white background for accurate color matching.
Kit Components Included: Phosphate Reagent A (powder in 5mL tubes x10), Phosphate Reagent B (8mL) x1, 50mL Centrifuge tubes (x2), 3mL Droppers (x2), 0.2mL Droppers (x10), Colorimetric Card x1, User Manual.
Required Equipment (Not Provided): Scissors, blender/homogenizer, purified or distilled water, deionized water, and electronic scale.
Email: service@fstestcorp.com | Website: www.fstestcorp.com
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