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Merck
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資料

1.09445

Supelco

Buffer solution

(citric acid/sodium hydroxide/hydrogen chloride) traceable to SRM from NIST and PTB pH 4.00 (25°C) Certipur®

別名:

Buffer solution pH 4.00 (25°C) (citric acid/sodium hydroxide/hydrogen chloride)

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About This Item

UNSPSCコード:
12161703
NACRES:
NA.25

グレード

certified reference material

品質水準

300

製品種目

Certipur®

pH

4.0 (25 °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

詳細

The certified buffer solution (citric acid/sodium hydroxide/hydrogen chloride) is gravimetrically prepared using high-quality reagents, as per DIN EN ISO/IEC 17025. Its pH value of 4.00 at 25°C is calculated using a combined glass electrode following a 5-point calibration method. The measurement is made following DIN 19268 using reference buffer solutions compliant to DIN 19266, NIST, IUPAC, Ph. Eur, and USP. Its pH value is strongly dependent on the temperature and therefore a constant temperature must be maintained during its use.

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

The buffer solution is used as a calibration standard in analytical procedures for pH measuring instruments or pH electrodes and as a control for measuring the pH of solutions.

特徴および利点

  • Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
  • Traceable to secondary reference standard from NIST and primary certified reference standard from PTB
  • Ready-to-use solution
  • Available in a sealed plastic bottle and sustainable Titripac® packaging for a reduced waste generation
  • Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective audit
  • Product label follows the ISO Guide 31 and contains information about ordering number, article description, lot number, safety data, and expiry date
  • Packaging material subjected to comprehensive stability studies as per ISO Guide 35

法的情報

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

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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