Accéder au contenu
Merck
Toutes les photos(1)

Documents

1.99012

Supelco

Buffer Solution

(citric acid, sodium hydroxide, hydrogen chloride) tracable to SRM from NIST and PTB pH 2.00 (25°C) Certipur®

Synonyme(s) :

Buffer solution pH 2.0 (citric acid/sodium hydroxide/hydrogen chloride)

Se connecterpour consulter vos tarifs contractuels et ceux de votre entreprise/organisme
Toutes les photos(1)

About This Item

Code UNSPSC :
12161704
Nomenclature NACRES :
NA.25

Qualité

certified reference material

Niveau de qualité

300

Gamme de produits

Certipur®

pH

2.0 (25 °C in H2O)

Densité

1.00 g/cm3 at 20 °C

Application(s)

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

Format

mixture

Température de stockage

15-25°C

Description générale

It is a certified buffer solution of citric acid/sodium hydroxide/hydrogen chloride, gravimetrically prepared using high-quality reagents at a registered calibration laboratory. It has a pH value of 2.00 at 25°C, measured using a combined glass electrode following a 5-point calibration method. The measurement is made in accordance with DIN 19268 using reference buffer solutions compliant to DIN 19266, NIST, IUPAC, Ph. Eur, and USP. The pH value of the buffer solution 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.

Application

The buffer solution is used as a standard in analytical procedures for the calibration of pH measuring instruments or pH electrodes and as a control for the measurement of pH of other solutions.

Caractéristiques et avantages

  • Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
  • Directly traceable to secondary reference standards from NIST and primary certified reference materials 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 quality management system
  • 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
  • An uncertainty of +/- 0.02 in the pH value at 25°C

Informations légales

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

Code de la classe de stockage

12 - Non Combustible Liquids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

Déjà en possession de ce produit ?

Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

Notre équipe de scientifiques dispose d'une expérience dans tous les secteurs de la recherche, notamment en sciences de la vie, science des matériaux, synthèse chimique, chromatographie, analyse et dans de nombreux autres domaines..

Contacter notre Service technique