1.09406

Buffer solution

(potassium hydrogen phthalate), traceable to SRM from NIST and PTB pH 4.01 (25°C) Certipur^®

• 동의어(들): Buffer solution pH 4.01 (Potassium hydrogen phthalate)
• UNSPSC 코드: 12161704
• NACRES: NA.25

속성

• Grade: certified reference material
• Quality Level: 300
• 제품 라인: Certipur^®
• pH: 4.01 (25 °C in H₂O)
• 응용 분야: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• 형식: mixture
• 저장 온도: 15-25°C

설명

일반 설명

The potassium hydrogen phthalate buffer solution is prepared gravimetrically with potassium hydrogen phthalate and high-purity water. It is analyzed using a combined glass electrode following a 5-point calibration method, in accordance with 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.

애플리케이션

It is used in analytical procedures for the calibration, qualification, and monitoring of pH measuring instruments and as a control for testing other buffer solutions.

특징 및 장점

• Measured and qualified in 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 an 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 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: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable