Description
pH buffer capsule 4,01 at 25 °C is a convenient solid concentrate for preparing accurate acidic calibration solutions in the laboratory. Each capsule is opened and the granule contents are emptied into 100 ml of deionised water; stirring dissolves the material to yield a ready-to-use buffer. When prepared with deionised water the stated tolerance is pH ±0,02, and the formulation is supported by a NIST certificate. Sample results remain consistent even if volumes are not measured with volumetric flasks and pipettes, which simplifies routine calibration workflows. The prepared buffer can be kept for approximately one week before it becomes unsuitable for use; there is no expiry date on the capsules themselves. For supplementary checks, distilled or tap water may be used. This pack contains 10 pieces with a net weight of 0,020 kg and is offered from manufacturer Labbox under the LABKEM product type, making it a practical choice for pH meter calibration, electrode verification and quality-control points that require a reliable pH 4,01 reference at 25 °C.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 10 pc(s)
- pH value: 4,01 at 25 °C
- Tolerance: pH ±0,02 (DI water)
- Preparation volume: 100 ml DI water
- Certification: NIST certificate
- EAN: 8434868056589
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about pH Buffer capsule pH 4,01 at 25°C, 10 pcs
What is this article?
pH Buffer capsule pH 4,01 at 25°C, 10 pcs is the article on this page. Luminix Health distributes Labbox 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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