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Merck
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1.19813

Supelco

Sulfate standard solution

traceable to SRM from NIST Na₂SO₄ in H₂O 1000 mg/l SO₄ Certipur®

동의어(들):

Sulfate standard for aqueous matrices ready for use

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모든 사진(1)

About This Item

UNSPSC 코드:
41116107
NACRES:
NA.24
가격 및 재고 정보를 현재 이용할 수 없음 고객지원팀으로 연락바랍니다.

Quality Level

100

기술

ion chromatography: suitable

density

0.998 g/cm3 at 20 °C

응용 분야

environmental
food and beverages

형식

single component solution

저장 온도

15-25°C

분석 메모

Concentration     β (SO₄²⁻): 990 - 1010 mg/l
Determination method: Titration with Lead(II)perchlorate solution.
(traceable to NIST - SRM 682)
Accuracy of the method: ± 2 mg/l

법적 정보

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

Storage Class Code

12 - Non Combustible Liquids

WGK

nwg

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.

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

    1 답변

    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/449/386/product-dating-information-mk.pdf

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

    1 답변

    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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