Sigma-Aldrich Rqcheck Test Kit For Rqfle

Description

quantitative

Quality Level

100

Specific Analyte(S)

nitrate

Reaction Suitability

reaction type: Griess reaction

Measuring Range

5-225 mg/L (NO₃ ^-)

Compatibility

RQflex^®10 Plus
RQflex^®10
RQflex^®20
for use with REFLECTOQUANT^®

Detection Method

reflectometric

Storage Temp.

2-8°C

Related Categories

Cannabis Testing Products for Cultivators, Producers & Testing Labs

Test Strips, Papers & Readers

General Description

Method: reflectometric with test strips 5 - 225 mg/l NO₃⁻ Reflectoquant^®The Reflectoquant Nitrate test strips can be used for the rapid determination of the nitrate content in water and also with fruit and vegetables to help decide whether a given delivery batch can be released for use in a specific product (e.g. baby foods). On the strip nitrate ions are reduced to nitrite ions by a reducing agent. In the presence of an acidic buffer, these nitrite ions react with an aromatic amine to form a diazonium salt, which in turn reacts with N-(1naphthyl)-ethylene-diamine to form a red-violet azo dye that is determined reflectometrically on the RQflex. For pre-testing a sample in an economic and quick way to check for nitrite interferences or to estimate the nitrate concentration and a possible dilution factor prior to using this quantitative method we recommend our semi-quantitative MQuant test strips for nitrate and nitrite. Further quantitative determination methods can be found with our Spectroquant tests.

Linkage

Replaces: 16971; 16971-1

Analysis Note

function control: conforms
Assay
- standard 1:
22 - 28 mg/l
- standard 2: 90 - 110 mg/l
- standard 3: 180 - 220 mg/lREFLECTOQUANT is a registered trademark of Merck KGaA, Darmstadt, GermanyRQFLEX is a registered trademark of Merck KGaA, Darmstadt, GermanyGHS07H319P264 - P280 - P305 + P351 + P338 - P337 + P313