1.09439

Buffer solution

(di-sodium hydrogen phosphate/potassium dihydrogen phosphate), traceable to SRM from NIST and PTB pH 7.00 (20°C) Certipur^®

• 동의어(들): Buffer solution pH 7.00 (20°C) (di-sodium hydrogen phosphate/potassium dihydrogen phosphate)
• UNSPSC 코드: 12161706
• NACRES: NA.25

속성

• Grade: certified reference material
• Quality Level: 300
• 제품 라인: Certipur^®
• pH: 7.0 (20 °C in H₂O)
• bp: 109 °C/1013 hPa
• mp: -5 °C
• density: 1.01 g/cm³ at 20 °C
• 응용 분야: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• 형식: mixture
• 저장 온도: 15-25°C

설명

일반 설명

The buffer solution (di-sodium hydrogen phosphate/potassium dihydrogen phosphate) is gravimetrically prepared using high-quality salts in high-purity water. It is quality controlled and qualified in an ISO/IEC 17025 accredited calibration lab. Its pH value of 7.00 at 20°C is qualified following a 5-point calibration method, using a combined glass electrode, in accordance with DIN 19268, against reference buffer solutions following 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.

애플리케이션

The di-sodium hydrogen phosphate/potassium dihydrogen phosphate buffer solution finds applications in analytical procedures for the calibration, qualification, and monitoring of pH measuring instruments.

특징 및 장점

• Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
• Traceable to SRMs from NIST and primary certified reference standards from PTB
• Ready-to-use solution available in a sealed bottle and the innovative Titripac^® packaging for positive environmental impact due to reduced waste generation
• Long-lasting with a shelf life of 3 years
• Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective audit

법적 정보

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

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

안전성 정보

• Storage Class Code: 12 - Non Combustible Liquids
• WGK: nwg
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable