Nitrite; Method 8153; Powder Pillows - Hach DR2400 Manual

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Table of Contents

Scope and Application:

* Adapted from McAlpine, R. and Soule, B., Qualitative Chemical Analysis, New York, 476, 575 (1933)

Tips and Techniques

• For more accurate results, determine a reagent blank value for each new lot of reagent. Follow the procedure using deionized

water in place of the sample. Subtract the reagent blank value from the final results or perform a reagent blank adjust

instrument manual for more information on Running a Reagent Blank.

• After adding the reagent, a greenish-brown color will develop if nitrite is present.

• Wipe the outside of sample cells before each insertion into the instrument cell holder. Use a damp towel followed by a dry one to

remove fingerprints or other marks.

Powder Pillows

Hach Programs

Hach Programs

Select program

373 N, Nitrite HR

Nitrite_PP_High_FES_Eng_Ody.fm

For water and wastewater

Fill a round sample

cell with 10 mL of

Add the contents of

one NitriVer

2 Nitrite

Reagent Powder Pillow.

Cap and shake to

dissolve (this is the

prepared sample).

Ferrous Sulfate Method*

HR (2 to 250 mg/L NO

Touch the timer icon.

A ten-minute reaction

period will begin.

To prevent low results,

leave the sample on a flat

surface and do not

disturb it during the

reaction period.