Description
POPSO, PUFFERAN® est une substance tampon zwitterionique de haute pureté, fournie à min. 99 % pour des applications de biologie moléculaire et de sciences de la vie. Sa formule empirique est C₁₀H₂₂N₂O₈S₂ · 2 H₂O, avec une masse molaire de 398.5 g/mol et le numéro CAS 68189-43-5 (EG nr. 269-199-1). POPSO appartient à la famille des tampons de type Good’s utilisés pour maintenir un pH stable dans les essais biochimiques, le travail enzymatique, les préparations liées aux cellules et d’autres systèmes aqueux où une liaison minimale aux métaux et une capacité tampon fiable sont avantageuses. Le produit est de qualité PUFFERAN® souligne son positionnement parmi les réactifs dédiés à la biologie moléculaire. Disponible du fabricant Carl ROTH, il s’intègre dans les flux de travail pour les réactifs utilisés en biologie moléculaire et en préparation de tampons. Le CAS, le numéro EG et la masse molaire documentés facilitent la pesée exacte, le calcul des solutions et la documentation qualité sans s’appuyer sur des allégations de performance non spécifiées.
Cet article fait partie de Tampons biologiques (Tris, HEPES, MOPS), dans Tampons & solutions pH.
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Questions about POPSO, PUFFERAN®, min. 99 %, 25 g, plastique
What is this article?
POPSO, 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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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

