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
Buffer solution
(citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 4.00 (20°C) Certipur®
別名:
Buffer solution pH 4.00 (20°C) (citric acid/sodium hydroxide/hydrogen chloride)
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グレード
certified reference material
品質水準
製品種目
Certipur®
pH
4.0 (20 °C in H2O)
密度
1.01 g/cm3 at 20 °C
アプリケーション
environmental
food and beverages
general analytical
industrial qc
pharmaceutical
フォーマット
mixture
保管温度
15-25°C
関連するカテゴリー
1 of 4
当該品目 | 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 |
詳細
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
アプリケーション
特徴および利点
- Measured and qualified in an ISO/IEC 17025 and ISO 17034 accredited laboratory
- Traceable to SRMs from NIST and primary certified reference standards from PTB
- Ready-to-use solution available in a sealed bottle and an innovative Titripac® packaging for positive environmental impact due to reduced waste generation
- Long-lasting with a shelf life of 3 years
- Accompanied with a batch-specific and detailed certificate of analysis (CoA) for an effective audit
法的情報
関連製品
保管分類コード
12 - Non Combustible Liquids
WGK
WGK 1
引火点(°F)
Not applicable
引火点(℃)
Not applicable
試験成績書（COA）
製品のロット番号・バッチ番号を入力して、試験成績書（COA） を検索できます。ロット番号・バッチ番号は、製品ラベルに「Lot」または「Batch」に続いて記載されています。
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How can I determine the shelf life / expiration / retest date of this product?
1 回答-
役に立ちましたか？
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 回答-
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
役に立ちましたか？
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Regarding the pH buffer standards, after opening, can I reuse the solution more than once to check the pH?
1 回答-
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.
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