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®
동의어(들):
Buffer solution pH 4.00 (20°C) (citric acid/sodium hydroxide/hydrogen chloride)
다음으로 건너뛰기
Grade
certified reference material
Quality Level
제품 라인
Certipur®
pH
4.0 (20 °C in H2O)
density
1.01 g/cm3 at 20 °C
응용 분야
environmental
food and beverages
general analytical
industrial qc
pharmaceutical
형식
mixture
저장 온도
15-25°C
1 of 4
이 품목 | 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 |
일반 설명
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.
애플리케이션
특징 및 장점
- 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
법적 정보
관련 제품
Storage Class Code
12 - Non Combustible Liquids
WGK
WGK 1
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
시험 성적서(COA)
제품의 로트/배치 번호를 입력하여 시험 성적서(COA)을 검색하십시오. 로트 및 배치 번호는 제품 라벨에 있는 ‘로트’ 또는 ‘배치’라는 용어 뒤에서 찾을 수 있습니다.
-
How can I determine the shelf life / expiration / retest date of this product?
1 답변-
도움이 되었습니까?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 답변-
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
도움이 되었습니까?
-
-
Regarding the pH buffer standards, after opening, can I reuse the solution more than once to check the pH?
1 답변-
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.
도움이 되었습니까?
-
자사의 과학자팀은 생명 과학, 재료 과학, 화학 합성, 크로마토그래피, 분석 및 기타 많은 영역을 포함한 모든 과학 분야에 경험이 있습니다..
고객지원팀으로 연락바랍니다.