Description
Phosphate buffer solution pH 3.25 is a ready-to-use analytical reagent conforming to Reag. Ph. Eur. 4.1.3 for pharmaceutical and laboratory pH work. It provides a defined acidic phosphate system at pH 3.25, supporting reproducible titration, method validation and routine assays under European Pharmacopoeia conditions. Physical data include a density of approximately 1 g/cm³ and a boiling point of 100 °C, consistent with an aqueous buffer matrix. The product is supplied in a 1 l plastic bottle, convenient for bench use and quality-control workflows. This specialised buffer from manufacturer Carl ROTH belongs to the pH-buffer solutions series aligned with Ph. Eur. 4.1.3 and is intended for analytical chemistry applications that specify a stable phosphate buffer at this pH. Laboratories can apply it directly in sample preparation, standardised monographs and controlled pH environments without further adjustment when used according to the relevant procedures. Its clear liquid presentation and defined pH make it a practical choice for pharmacopoeial and general analytical protocols requiring reliable acidic buffering capacity.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 1 l plastic
- Density: ~1 g/cm³
- Boiling point: 100 °C
- Specification: Reag. Ph. Eur. 4.1.3
- Product type: Phosphate buffer solution
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Phosphate buffer solution pH 3.25, Reag. Ph. Eur. 4.1.3, 4014900, 1 l, plastic
What is this article?
Phosphate buffer solution pH 3.25, Reag. Ph. Eur. 4.1.3, 4014900, 1 l, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in pH buffers & conductivity standards, inside Buffers & pH solutions, in Lab chemicals.
A pH buffer for calibration has a stated pH at a stated temperature, often traceable. A conductivity standard has a stated conductivity. They are not general reagents and they should not be poured back into the bottle. The temperature of the measurement has to be the temperature on the label, or the meter has to compensate.
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 Buffers & pH solutions. The sub-category is pH buffers & conductivity standards. The catalogue is Lab chemicals.
Shelves beside this one are Biological buffers (Tris, HEPES, MOPS) and Buffers (other).
What should I check before I order?
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