Nitrite Rapid Test Kit

Brand: FSTEST
CatNO: IA32.1220.5
Specifications: 100tests/kit
Shelf life: 18 months
Application: Intended to test nitrite in foods such as sausages, cured meats, ham, edible bird’s nest, pickled vegetables, and other vegetables semi-quantitatively.

FSTest Nitrite Detection Kit
Rapid Semi-Quantitative Detection of Nitrites in Edible Bird’s Nest, Water & Food Samples

Nitrite (commonly sodium nitrite) is a potentially harmful food contaminant.    Though permitted in small quantities for certain meat products, excessive levels may pose serious health risks — as little as 0.3–0.5g can cause acute poisoning or death.    In bird's nest products, nitrite may form naturally during processing or storage and is strictly limited to 30 mg/kg under Chinese food safety regulations.

The FSTest Nitrite Detection Kit offers a simple, accurate, and rapid on-site screening solution for nitrite contamination in solid and liquid food products, especially edible bird’s nests, with colorimetric results in just 5 minutes.

Key Features

  High Sensitivity: LOD: 1 mg/kg (solid), 0.1 mg/L (liquid)
  Fast Results: Get colorimetric results in 5 minutes
  No Complicated Instruments Needed: Perform tests on-site using simple visual comparison
  Clear Visual Readout: Use the colorimetric chart to assess nitrite concentration
  Safe & Portable: Ideal for field inspections, customs, and food processing QC

Kit Components
  1 × Detection Solution A (6 mL)
  1 × Detection Solution B (dry)
  100 × Droppers
  100 × 1.5 mL Centrifuge Tubes
  5 × 50 mL Centrifuge Tubes
  1 × Colorimetric Card
  1 × User Manual

Applications:
This test is suitable for detecting nitrite residues in:
  Edible bird’s nest
  Noodles, rice flour, jellyfish, instant food
  Drinking water, herbal drinks, and clear liquids
  Export goods inspected by customs authorities
  Especially effective for bird’s nest exporters/importers complying with China GB standards (nitrite limit: 30 mg/kg).

How It Works – Testing Procedure
For Liquid Samples

• Use colorless or lightly colored liquids directly as test solution.

For Solid Samples (e.g., bird’s nest)

• Chop 1g of sample finely.
  Add 10mL distilled water and sonicate for 10 mins (or stir + stand for 5 mins).
  Centrifuge if needed, then collect the supernatant as test solution.

Color Development & Result Reading

• Pipette 1mL test solution into a 1.5mL tube.
  Add 1 drop each of Detection A and B. Shake well.

React for 5 minutes, then compare color with the standard chart:
 • Light pink = low/none
 • Purple-red = high nitrite concentration

Storage Conditions
Store sealed in a cool, dry place, 4–30°C
Shelf life: 12 months
Keep away from light and humidity

User manual

• IA32.1220.5 Nitrite Rapid Test Kit
  

https://www.fstestcorp.com/products-detail/id-146.html