Nitrite 0-25 ppm, Nitrate <span class="bldppm">0-500 ppm</span> Two Pad Test Strip [Vial of 50 Strips]
Nitrite 0-25 ppm, Nitrate <span class="bldppm">0-500 ppm</span> Two Pad Test Strip [Vial of 50 Strips] - Image 2
Nitrite 0-25 ppm, Nitrate <span class="bldppm">0-500 ppm</span> Two Pad Test Strip [Vial of 50 Strips] - Image 3

Nitrite 0-25 ppm, Nitrate 0-500 ppm Two Pad Test Strip [Vial of 50 Strips]

$22.19

Quantity Discount
2+ 5 %
10+ 9 %
25+ 13 %
SKU: PWQ08V50 Category: UPC: 649910801323

Description

  • Dual Testing for Nitrites and Nitrates: Simultaneously detects Nitrite (0-25 ppm) and Nitrate (0-500 ppm) levels in water, food, and agricultural runoff for comprehensive water quality analysis.
  • Fast & Accurate Results: Provides quick, reliable readings in under 1 minute without the need for additional chemicals or reagents, ideal for monitoring water and food safety.
  • Versatile Application: Perfect for testing ground/well water, bioreactor performance, wine, seafood, sandwich meats (e.g., ham, bologna), and fertilizer runoff in agriculture.
  • Desiccant-Lined Vials: Moisture-protective vials with desiccant ensure strips remain fresh and consistent, even in challenging environments, preserving test accuracy over time.
  • Sensitive & Easy to Use: No complicated procedures required, simply dip the strip into the solution, wait for the result, and compare with the color chart for accurate nitrite and nitrate concentrations.

The Nitrite Nitrate test strip is used to test for Nitrites & Nitrates in solution simultaneously. The Nitrate pad detects Nitrate in solution at 10, 25, 50, 100, 250, & 500ppm. The Nitrite pad detects Nitrite in solution at 0, .5, 1, 5, 10, & 25ppm. Nitrite test strips are often used when testing for Nitrites in wine, seafood, and sandwich meats, such as ham and bologna. Nitrate test strips are often used to test fertilizer run-off in agricultural areas. This strip is very sensitive to light and moisture, so be sure to keep the vial tightly sealed. Make sure to reseal the bottle immediately after opening to prevent the moisture from ruining them.

The unit of measures are Nitrite and Nitrate. To express Nitrite as Nitrite-Nitrogen divide result by 3.3, for Nitrate as Nitrate-Nitrogen divide by 4.4 .

Instructions:

  1. Remove one Nitrite Nitrate test strip from the vial.
  2. Dip the test strip into the solution so that both pads are immersed and hold for 2-3 seconds in the solution.
  3. Remove the test strip, and shake off any excess liquid.
  4. Compare test pad to the color chart after 30 seconds

The pad on the end of the strip is for nitrate, the pad closest to your fingers when you dip it is for nitrite.

Additional information

Weight 1.5 oz
Dimensions 4 × 2.75 × 2.75 in

FAQ

When I dip the strip it immediately changes to the darkest shade possible. What causes this ?

Generally speaking when a strip immediately changes to the darkest shade on the color chart it means whatever sample you are testing is above the upper end of the test strips range.

In normal water applications, the Griess reaction produces a pink/red color. When the concentration of nitrate or nitrite is high the color becomes more red. When you get an immediate red color, the levels of either nitrate or nitrite are very high. Another factor could be the pH of the test solution. If it is very low, the reaction may tend to be more red (and dark).

Generally in instances where this happens we would recommend diluting the test solution (sometimes substantially) and then retesting.

What is the chemistry of this test?

Nitrate is detected by formation of a red/pink color on the test pad utilizing the Griess reaction chemistry after the Nitrate is first reduced to Nitrite by a reducing agent impregnated in the test pad. The intensity of the color developed is proportional to the amount of nitrate present.

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