Description
Phosphate buffer solution 0,05 M pH 4.5 is a ready-to-use analytical buffer prepared to Reag. Ph. Eur. 4.1.3 requirements for controlled acidic conditions in laboratory workflows. With a defined concentration of 0,05 mol/l and a target pH of 4,5, it supports reproducible pH adjustment, calibration-related tasks, and method development where a stable phosphate system is specified. The aqueous preparation shows a density of approximately 1 g/cm³ and a boiling point of 100 °C, consistent with a dilute aqueous buffer matrix. Supplied in a 1 l pack, the solution is suited to routine analytical chemistry, pharmacopoeial reagent applications, and general laboratory buffering under the Ph. Eur. 4.1.3 framework (reference 4009000). This special buffer from manufacturer Carl ROTH fits categories covering analytical chemicals and pH-buffer solutions according to Ph. Eur. 4.1.3. It offers a practical volume for benches that need a standardised acidic phosphate medium without on-site preparation from solid salts, helping maintain consistent ionic conditions across repeated measurements and sample handling steps.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 1 l
- Density: ~1 g/cm³
- Boiling point: 100 °C
- Specification: Reag. Ph. Eur. 4.1.3
- Concentration: 0,05 M
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Phosphate buffer solution 0.05 M pH 4.5, Reag. Ph. Eur. 4.1.3, 4009000, 1 l
What is this article?
Phosphate buffer solution 0.05 M pH 4.5, Reag. Ph. Eur. 4.1.3, 4009000, 1 l 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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