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1.19899

Nitrite standard solution

traceable to SRM from NIST NaNO2 in H2O 1000 mg/l NO2 Certipur®

Sinónimos:

Nitrite standard for aqueous matrices ready foruse

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NACRES:
NA.24
UNSPSC Code:
41116107

Quality Segment

100

technique(s)

ion chromatography: suitable

pH

7 (20 °C in H2O)

application(s)

environmental
food and beverages

format

single component solution

storage temp.

15-25°C

Analysis Note

Concentration     β (NO₂⁻): 990 - 1010 mg/l
Determination method: Cerimetric titration.
The content of this solution was determined by back-titration with Ammonium(II) ferrous sulfate (article number 1.03792) standardized by Cerium(IV) sulfate (article number 1.09092) against volumetric standard Iron(II)ethylendiammonium sulfate (article number 1.02402). The expanded measurement uncertainty is ± 0.7 % (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 8040 (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard Iron(II)ethylendiammonium sulfate measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.

Other Notes

We now offer a certified reference material alternative for this product that has the same composition and is manufactured under ISO 17034 accreditation.

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

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Clase de almacenamiento

12 - Non Combustible Liquids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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Protocolos

Método analítico: Nitritos en polvo instantáneo de patata

Determinación fotométrica utilizando el método Griess posterior a la extracción

Analytical Method: Nitrite in potato instant powder

Photometric determination using the Griess method subsequent to extraction

Reflectometric Determination of Nitrite in Meat Products

Reflectometric protocol enabling rapid quantification of nitrite in meat product samples with RQflex® 20 reflectometer.

Contenido relacionado

Número de artículo de comercio global

SKUGTIN
119899050004022536181509

Preguntas

1–2 de 2 Preguntas  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 respuesta

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 respuesta

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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