nitrite test strips

nitrite test strips

Definition of nitrite test strips

The rapid detection series is a semi quantitative detection product, and the detection results are interval values, so there are no concepts such as precision and accuracy, and the sensitivity is the minimum detection limit.

Widely used in urban water supply, food and beverage, environmental, medical, chemical, pharmaceutical, thermoelectric, papermaking, aquaculture, bioengineering, fermentation process, textile printing and dyeing, petrochemical, water treatment and other fields for on-site rapid detection of water quality.

Basic characteristics

  • Able to detect indicators and read data in a relatively short period of time.
  • Easy to operate, no need for other accessories.
  • Convenient to carry and suitable for on-site testing.
  • The price is cheap.

Product parameters

  • Detection range: 1-5-10-20-40-80mg/l
  • Detection frequency: 100 times/box
  • Validity period: 18 months
  • Storage method: At room temperature, in a dry place away from light

Instructions for use

  • Take out the test paper and quickly cover it.
  • The reaction zone of the test paper is partially immersed in the water sample to be tested for 10 seconds, and the excess water sample is removed and shaken off.
  • After being left for three minutes, the color blocks with similar colors are the concentration values of the tested sample compared to the color comparison card.

note

  • When removing the test paper, do not touch the reaction area at the front end of the test paper with your fingers to prevent contamination and affect the detection.
  • Seal and store in a cool and dry place. After removing the required test paper, the bottle cap should be tightly closed in a timely manner to prevent the test paper from being exposed to moisture or oxidation in the air for a long time.
  • The liquid to be tested must be colorless or light colored, and colored liquids must be decolorized before detection (solution decolorization: activated carbon adsorption method or dilution method)
  • If the liquid to be tested is relatively turbid, it should be left to stand for a period of time before taking a clear part for testing.
  • The pH value of the liquid to be tested should be within the specified range, and if it exceeds the range, it should be adjusted in advance.
  • The color comparison must be completed within the specified time, and the test results beyond the specified time are invalid.
  • If the concentration of the liquid to be tested exceeds the detection range, it should be diluted with distilled water before testing.