199011

Buffer solution

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

• UNSPSCコード: 41116107

特性

• グレード: certified reference material
• 品質水準: 300
• 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 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.

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