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^®

• 동의어(들): Potassium tetraoxalate dihydrate buffer solution, pH 1.7 Certified Secondary Buffer Solution
• UNSPSC 코드: 41116107
• NACRES: NA.25

속성

• Grade: certified reference material
• Quality Level: 300
• Agency: complies with DIN 19266
• 제품 라인: Certipur^®
• pH: 1.7 (25 °C in H₂O)
• density: 1.003 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 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.

애플리케이션

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

특징 및 장점

• 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

분석 메모

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

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