1.99091
Buffer solution
traceable to NIST SRM, traceable to PTB, pH 9.18 (25 °C in H2O), Certipur®
동의어(들):
di-sodium tetraborate
제품 이름
Buffer solution, traceable to NIST SRM, traceable to PTB, pH 9.18 (25 °C in H2O), Certipur®
agency
traceable to NIST SRM
traceable to PTB
product line
Certipur®
pH
9.18 (25 °C in H2O)
bp
100 °C/1013 hPa
density
1.00 g/cm3 at 20 °C
storage temp.
15-25°C
Quality Level
Application
The buffer is used as a standard to calibrate pH measuring instruments or pH electrodes and as a control to measure the pH of other solutions.
Features and Benefits
- Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
- Traceable to secondary reference standard from NIST and primary certified reference standard from PTB
- Available in secure 500 mL plastic bottle to protect against contamination
- Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective audit
- Product label follows the ISO Guide 31 and contains information about ordering number, article description, lot number, safety data, and expiry date
- Packaging material subjected to comprehensive stability studies as per ISO Guide
General description
The di-sodium tetraborate buffer solution is gravimetrically prepared at a registered calibration laboratory with high-quality reagents and water. Its pH value of 9.20 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 pH is temperature dependent 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.
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.
Legal Information
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
저장 등급
12 - Non Combustible Liquids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
시험 성적서(COA)
제품의 로트/배치 번호를 입력하여 시험 성적서(COA)을 검색하십시오. 로트 및 배치 번호는 제품 라벨에 있는 ‘로트’ 또는 ‘배치’라는 용어 뒤에서 찾을 수 있습니다.
국제 무역 품목 번호
| SKU | GTIN |
|---|---|
| 1.99091.0500 | 04027269966539 |
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