コンテンツへスキップ
Merck

主要文書

すべての文書を表示

1.99015

Buffer solution

(Potassium tetraoxalate) traceable to SRM from NIST and PTB pH 1.68 (25°C) Certipur®

別名:

Buffer solution pH 1.7 (Potassium tetraoxalate)

で組織・契約価格をご覧ください。

サイズを選択してください

表示を変更する

この商品について

NACRES:
NA.25
UNSPSC Code:
41116107
テクニカルサービス
お困りのことがあれば、経験豊富なテクニカルサービスチームがお客様をサポートします。
お手伝いします

Quality Segment

300

pH

1.7 (25 °C in H2O)

density

1.003 g/cm3 at 20 °C

storage temp.

15-25°C

General description

The potassium tetraoxalate certified buffer solution is gravimetrically prepared using high-quality reagents and water at a registered calibration laboratory. Its pH value of 1.68 at 25°C is measured 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. The buffer’s pH value depends 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.

Application

It is used as a standard to calibrate pH measuring instruments or pH electrodes and as a control to measure the pH of other solutions.

Features and Benefits

  • 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
  • Available in a secure 500 mL plastic bottle to protect against contamination
  • 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

Legal Information

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

Still not finding the right product?

Explore all of our products under Buffer solution

保管分類

12 - Non Combustible Liquids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

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。

以前この製品を購入いただいたことがある場合

文書ライブラリで、最近購入した製品の文書を検索できます。

文書ライブラリにアクセスする