1.07204

Certified sec. standard reference buffer solution

potassium tetraoxalate dihydrate, directly traceable to primary SRM from NIST/PTB pH(S) = 1.67₉ (25°C) Certipur^®

• 別名: Potassium tetraoxalate dihydrate buffer solution, pH 1.7 Certified Secondary Buffer Solution
• UNSPSCコード: 41116107
• NACRES: NA.25

特性

• グレード: certified reference material
• 品質水準: 300
• 認証: complies with DIN 19266
• 製品種目: Certipur^®
• pH: 1.7 (25 °C in H₂O)
• 密度: 1.003 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

詳細

The potassium tetraoxalate dihydrate certified secondary standard reference buffer solution is gravimetrically prepared using high-quality salt in high-purity water. Its pH value is measured by differential potentiometry with two platinum hydrogen electrodes against primary certified reference materials from NIST & PTB. The pH qualification is based on the 5-point calibration method, following DIN 19268, against certified primary reference standards as per DIN 19266.

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

It can be used to calibrate, qualify, and monitor pH measuring instruments and as a control for testing other buffer solutions.

特徴および利点

• Available in a safe 100 mL high-density plastic bottle in solution format
• Subjected to detailed stability studies as per ISO Guide 35
• Product label carrying relevant information on order number, article description, lot number, expiry date and safety data, in accordance with ISO Guide 31
• Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective quality management system
• Measured and qualified in ISO/IEC 17025 and ISO 17034 accredited laboratory
• Traceable to SRMs from NIST and primary certified reference standards from PTB

アナリシスノート

pH-value: 1.674 - 1.683
For complete data see the enclosed certificate

法的情報

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

安全性情報

• 保管分類コード: 12 - Non Combustible Liquids
• WGK: nwg
• 引火点(°F): Not applicable
• 引火点(℃): Not applicable