Description
BES, PUFFERAN®, min. 99 % est un réactif tampon zwitterionique de haute pureté pour les flux de travail en biologie moléculaire et en sciences de la vie. Avec le numéro CAS 10191-18-1, la formule empirique C₆H₁₅NO₅S et la masse molaire 213.26 g/mol, il assure un contrôle fiable du pH dans les systèmes tampons biochimiques et de biologie moléculaire. La densité est indiquée comme 0.92 g/cm³. Le composé appartient à la famille établie des tampons de type Good utilisés dans les ensembles de réactifs de biologie moléculaire. Les laboratoires peuvent intégrer BES dans les protocoles courants de préparation de tampons pour le travail de recherche et d'analyse. Des données d'identité claires, y compris EG nr. 233-465-5, facilitent la documentation et la traçabilité dans les environnements réglementés ou sous contrôle qualité.
Cet article fait partie de Tampons biologiques (Tris, HEPES, MOPS), dans Tampons & solutions pH.
Caractéristiques
- Teneur (titr.): ≥99 %
- Perte au séchage: ≤1 %
- Valeur de pH (solution à 1 %): 3-5
- Solubilité (0.1 M dans H2O): limpide, incolore
- 280 nm: ≤0.08
- 260 nm: ≤0.1
- Numéro CAS: 10191-18-1
- Conditionnements: 25 g, 100 g, 250 g, 500 g
- N° CE: 233-465-5
- Masse molaire: 213.26 g/mol
- Masse volumique: 0.92 g/cm³
- Fiche technique:
- Fiche de données de sécurité:
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Questions about BES, PUFFERAN®, min. 99 %, 25 g, plastique
What is this article?
BES, PUFFERAN®, min. 99 %, 25 g, plastique is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Tampons biologiques (Tris, HEPES, MOPS), inside Tampons & solutions pH, in Produits chimiques.
Tris, HEPES, MOPS and their relatives hold pH in a range that cells and proteins tolerate, with a pKa near the working pH. The useful range is roughly one unit either side of the pKa. A phosphate buffer and Tris are not interchangeable in a method that names one of them, because the ion itself has effects.
A buffer resists a change in pH when a little acid or base is added. It does that because a weak acid and its conjugate base are both present. A pH buffer used to calibrate a meter has a stated value at a stated temperature. A biological buffer such as Tris or HEPES is chosen because it holds the pH of a living system and does not poison it. Conductivity standards are the sister articles for a conductivity meter. The ions are on PubChem. Electrode calibration practice sits with EURAMET and BELAC.
Which category should I open next?
The category is Tampons & solutions pH. The sub-category is Tampons biologiques (Tris, HEPES, MOPS). The catalogue is Produits chimiques.
Shelves beside this one are tampons pH & étalons de conductivité and Tampons (autres).
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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