1.99021

Buffer Solution

(boric acid, sodium hydroxide, potassium chloride) tracable to SRM from NIST and PTB pH 11.00 (25°C) Certipur^®

• Sinonimo/i: Buffer solution pH 11.0 (25 °C in H2O) (boric acid, sodium hydroxide, potassium chloride)
• Codice UNSPSC: 12161705
• NACRES: NA.25

Proprietà

• Grado: certified reference material
• Livello qualitativo: 300
• Nome Commerciale: Certipur^®
• pH: 11.0 (25 °C in H₂O)
• Densità: 1.01 g/cm³ at 20 °C
• applicazioni: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• Formato: mixture
• Temperatura di conservazione: 15-25°C

Descrizione

Descrizione generale

The boric acid/sodium hydroxide/potassium chloride buffer solution is gravimetrically prepared at a registered calibration laboratory with high-quality reagents and water. Its pH value of 11.00 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 strongly depends on the temperature 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.

Applicazioni

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.

Caratteristiche e vantaggi

• 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
• Ready-to-use solution 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

Note legali

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

Informazioni sulla sicurezza

• Pittogrammi: GHS08
• Avvertenze: Danger
• Indicazioni di pericolo: H360FD
• Consigli di prudenza: P201 - P202 - P280 - P308 + P313 - P405 - P501
• Classi di pericolo: Repr. 1B
• Codice della classe di stoccaggio: 6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• Classe di pericolosità dell'acqua (WGK): nwg
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable