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/449/386/product-dating-information-mk.pdf
B5020
Buffer, reference standard
pH 4.00±0.01 (25 °C)
Sinonimo/i:
pH calibration solution at 25 °C pH 4.00±0.01
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About This Item
Prodotti consigliati
Stato
liquid
Livello qualitativo
Colore
color-coded red
pH
4.00±0.01 (25 °C)
Temperatura di conservazione
15-25°C
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Applicazioni
Caratteristiche e vantaggi
- Traceable to NIST standard reference materials
- A ready-to-use solution available in various packaging to provide ease-of-use
Confezionamento
Risultati analitici
Standard
Codice della classe di stoccaggio
12 - Non Combustible Liquids
Classe di pericolosità dell'acqua (WGK)
WGK 1
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Dispositivi di protezione individuale
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
Scegli una delle versioni più recenti:
Certificati d'analisi (COA)
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Se hai bisogno di una versione specifica, puoi cercare il certificato tramite il numero di lotto.
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I documenti relativi ai prodotti acquistati recentemente sono disponibili nell’Archivio dei documenti.
Protocolli
Enzymatic Assay of Carbonic Anhydrase for Wilbur-Anderson Units (EC 4.2.1.1)
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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