1.99005
Buffer solutions
traceable to NIST, traceable to PTB, pH 4.01 (25 °C, phthalate), pH 7.00 (25 °C, phosphate), pH 9.00(borate), Certipur®
別名:
pH Calibration Buffers
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この商品について
NACRES:
NA.25
UNSPSC Code:
12161703
grade
certified reference material
Quality Level
agency
traceable to NIST, traceable to PTB
product line
Certipur®
pH
4.01 (25 °C, phthalate), 7.00 (25 °C, phosphate), 9.00(borate)
application(s)
environmental
food and beverages
general analytical
industrial qc
pharmaceutical
format
mixture
storage temp.
15-25°C
General description
It includes a pack of three certified buffer solutions, gravimetrically prepared using high-quality reagents and water at a registered calibration laboratory. Their pH values of 4.01 (phthalate), 7.00 (phosphate), and 9.00 (borate) at 25°C are measured using combined glass electrode as per the 5-point calibration method. The measurements are made following DIN 19268 using reference buffer solutions compliant to DIN 19266, NIST, IUPAC, Ph. Eur, and USP. The pH of buffers is strongly dependent on the temperature and therefore a constant temperature must be maintained during their 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.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
Application
They are used as standards to calibrate pH measuring instruments or pH electrodes and as controls 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 standards from NIST and primary certified reference standards from PTB
- Ready-to-use solutions available in 30 mL sachets
- 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 35
- pH 4.00 and pH 6.99 buffer CRMs in the pack are accurate upto +/- 0.02 at 25 °C and the pH 9.00 buffer CRM is accurate upto +/-0.03 at 25 °C
Legal Information
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
保管分類
10-13 - German Storage Class 10 to 13
試験成績書（COA）
製品のロット番号・バッチ番号を入力して、試験成績書（COA） を検索できます。ロット番号・バッチ番号は、製品ラベルに「Lot」または「Batch」に続いて記載されています。
グローバルトレードアイテム番号
| カタログ番号 | GTIN |
|---|---|
| 1.99005.0001 | 04022536741239 |