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
1.09435
Disolución tampón
(citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 4.00 (20°C) Certipur®
Sinónimos:
Disolución tampón a pH 4,00 (20°C) (ácido cítrico/hidróxido sódico/cloruro de hidrógeno)
Seleccione un Tamaño
$80.80
$188.00
$384.80
$80.80
Precio de catálogo$101.00Ahorre 20 %Acerca de este artículo
Saltar a
grade
certified reference material
Quality Level
product line
Certipur®
pH
4.0 (20 °C in H2O)
density
1.01 g/cm3 at 20 °C
application(s)
environmental
food and beverages
general analytical
industrial qc
pharmaceutical
format
mixture
storage temp.
15-25°C
Categorías relacionadas
1 of 4
Este artículo | 1.09436 | 1.09439 | 1.09432 |
|---|---|---|---|
| format mixture | format mixture | format mixture | format mixture |
| product line Certipur® | product line Certipur® | product line Certipur® | product line Certipur® |
| grade certified reference material | grade certified reference material | grade certified reference material | grade certified reference material |
| application(s) environmental | application(s) environmental | application(s) environmental | application(s) environmental |
| pH 4.0 (20 °C in H2O) | pH 5.0 (25 °C in H2O) | pH 7.0 (20 °C in H2O) | pH 1.0 (25 °C in H2O) |
| density 1.01 g/cm3 at 20 °C | density 1.01 g/cm3 at 20 °C | density 1.01 g/cm3 at 20 °C | density 1.00 g/cm3 at 20 °C |
General description
Visite los certificados ISO y las autoevaluaciones de calidad del sitio para acceder a los certificados de acreditación vigentes.
Descargue su certificado en http://www.sigma-aldrich.com para ver los valores certificados, entre ellos la incertidumbre y la fecha de caducidad.
Application
Features and Benefits
- Medidos y cualificados en un laboratorio acreditado por la ISO/IEC 17025 y la ISO 17034
- Compatibles con los SRM del NIST y los patrones de referencia certificados primarios de PTB
- Disolución lista para usar disponible en una botella precintada y un innovador envase Titripac® para un impacto medioambiental positivo debido la reducción de la generación de residuos
- Larga duración con una vida útil de 3 años
- Acompañada de un certificado de análisis (CoA) detallado y específico de lote para una auditoría eficaz
Legal Information
related product
Clase de almacenamiento
12 - Non Combustible Liquids
wgk_germany
WGK 1
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»
¿Ya tiene este producto?
Encuentre la documentación para los productos que ha comprado recientemente en la Biblioteca de documentos.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
-
-
Regarding the pH buffer standards, after opening, can I reuse the solution more than once to check the pH?
1 answer-
Once the buffer aliquot has been poured out of the bottle, it can only be used once. And make sure not to pour it back into the bottle.
Helpful?
-
Active Filters
Nuestro equipo de científicos tiene experiencia en todas las áreas de investigación: Ciencias de la vida, Ciencia de los materiales, Síntesis química, Cromatografía, Analítica y muchas otras.
Póngase en contacto con el Servicio técnico