Description
Phthalate buffer solution pH 4.4 is a ready-to-use analytical reagent conforming to Reag. Ph. Eur. 4.1.3 for controlled acidic buffering in pharmaceutical and laboratory practice. With a density of approximately 1 g/cm³ and a boiling point above 100 °C, the aqueous solution supports reproducible pH adjustment, titration work and method development where a stable phthalate system is specified. It is supplied in a 1 l plastic pack that suits routine bench use as well as larger analytical series. Laboratories following European Pharmacopoeia procedures employ such specialised buffers to maintain consistent hydrogen-ion activity during quality-control assays, electrode checks and sample preparation. The formulation from manufacturer Carl ROTH belongs to the dedicated pH-buffer solutions Ph. Eur. 4.1.3 range and is intended for professional analytical chemistry environments. Its defined pH of 4.4 makes it appropriate wherever phthalate-based buffering capacity at this value is required. The 1 litre unit has a weight of 1,3 kg, simplifying stock planning in chemical stores and QC departments while remaining convenient to handle on the open bench.
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
- Grade: Reag. Ph. Eur. 4.1.3
- Weight: 1,3 kg
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Phthalate buffer solution pH 4.4 , Reag. Ph. Eur. 4.1.3, 4001100, 1 l, plastic
What is this article?
Phthalate buffer solution pH 4.4 , Reag. Ph. Eur. 4.1.3, 4001100, 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).
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