Sigma-Aldrich Nitrite Test Colorimetric,

Specific Analyte(S)

nitrite

Quality Level

100

Measuring Range

0.1-10 mg/L (NO₂ ^-)

Compatibility

for use with MCOLORTEST^®

Detection Method

colorimetric

Storage Temp.

15-25°C

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General Description

Method: colorimetric with color-disk comparator 0.1 - 0.2 - 0.4 - 0.6 - 1.0 - 1.8 - 3.0 - 6.0 - 10 mg/L NO MQuant^®Nitrite is naturally present in soil, water and food, and regularly testing its concentration is essential for many applications. With the MQuant^®Nitrite test (formally MColortest^®) Nitrites can be closely monitored in drinking and ground water as well as in process, waste, or aquarium water. The test can be used in:

• Groundwater and surface water, seawater
• Drinking water and mineral water
• Waters from aquaculture
• Boiler and boiler feed water, cooling water
• Wastewater and electroplating wastewater
• Food after appropriate sample pretreatment
• Soils after appropriate sample pretreatment

Method
In acidic solution nitrite ions react with sulfanilic acid to form a diazonium salt, which in turn reacts with N-(1-naphthyl)ethylenediamine dihydrochloride to form a red-violet azo dye. The nitrite concentration is measured semiquantitatively by visual comparison of the color of the measurement solution with the color fields of a color disk. The test evaluates the color reaction based on the transmitted light method. SO even turbid and colored water samples can be analyzed without further preparation.
The color disk is made of very durable, lightfast plastic, thus suitable for industrial areas and wet environments.

Application

• Clinical and laboratory features of urinary tract infections in young infants:Discusses diagnostic challenges and characteristics of urinary tract infections in infants, stressing the importance of accurate detection to guide treatment (Lo et Al., 2018).


• Differentiating Kawasaki disease from urinary tract infection in febrile children with pyuria and C-reactive protein elevation:Focuses on differential diagnosis in pediatric care, which can influence the choice of nitrite tests for accurate and timely diagnosis (Han and Lee, 2018).


• Early features of Kawasaki disease with pyuria in febrile infants younger than 6 months:Addresses the overlap of urinary symptoms in Kawasaki disease, underscoring the utility of nitrite tests in complex cases (Yoon et Al., 2018).


• Current practice on the management of pre-operative urine dipstick results in women undergoing gynaecological surgery in Wales:Reviews procedures related to pre-surgical care in gynaecology, indicating broader applications of nitrite testing in hospital protocols (Walker et Al., 2019).

MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, GermanyMQUANT is a registered trademark of Merck KGaA, Darmstadt, GermanyGHS07H315 - H317 - H319P261 - P264 - P272 - P280 - P302 + P352 - P305 + P351 + P338