1.07294

Buffer solution

di-sodium hydrogen phosphate/potassium dihydrogen phosphate, traceable to NIST, traceable to PTB, pH 6.88 (20 °C), Certipur^®

• 동의어(들): di-sodium hydrogen phosphate/potassium dihydrogen phosphate buffer, pH 6.88 calibration standard solution
• UNSPSC 코드: 12161706
• NACRES: NA.25

속성

• Grade: certified reference material
• Quality Level: 300
• Agency: traceable to NIST; traceable to PTB
• 제품 라인: Certipur^®
• 구성: di-sodium hydrogen phosphate/potassium dihydrogen phosphate
• pH: 6.88 (20 °C)
• 응용 분야: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• 형식: mixture
• 저장 온도: 15-25°C

설명

일반 설명

Certipur^® buffer solution [di-sodium hydrogen phosphate/potassium dihydrogen phosphate buffer; pH 6.88 (20 °C)] is intended for use as a calibration standard for pH instruments or pH electrodes or as a control sample for measuring the pH value.

The ready-to-use Certipur^® buffer solutions are prepared gravimetrically in our ISO/IEC 17025 accredited calibration laboratory from high-purity salts, acids and bases diluted in high-purity water. All balances are regularly calibrated with analytical weight sets traceable to primary standard reference materials from NIST and PTB. The pH-value is measured to the highest precision using a combined glass electrode after 5-point calibration (according to DIN 19268) against reference buffer solutions (according to DIN 19266, IUPAC, NIST, Ph.Eur. and USP).

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.

특징 및 장점

• Compliant: Produced according to EP and USP guidelines
• Secure: Tested in our ISO 17025 accredited calibration laboratory
• Ready for audits: Detailed certificate of analysis for every product
• Convenient: Simply open the pack for quick, accurate pH calibration

법적 정보

CERTIPUR 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