Beschrijving
Buffer solution pH 9.21 is a ready-to-use pH buffer intended for laboratory calibration and verification of pH electrodes and meters in the alkaline range. The solution carries a defined pH value of 9,21 and is supplied in a practical 250 ml pack as a single unit, with a net weight of 0,299 kg and a matching gross weight of 0,299 kg. This format suits routine bench work, quality control and multi-point calibration sequences where a reliable alkaline reference point is required. The product comes from manufacturer Mettler-Toledo OnLine and forms part of a dedicated pH buffer solution range used in analytical, research and process laboratories. Originating from Switzerland, the buffer offers a convenient volume for daily electrode checks without unnecessary excess. Clear pH designation supports straightforward selection alongside complementary standards, helping laboratories maintain measurement consistency, electrode performance and reproducible results across alkaline working ranges in everyday laboratory practice.
This article belongs on pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 250 ml
- Product type: pH buffer solution
- pH value: 9,21
- Country of origin: Switzerland
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Questions about Certified buffer pH 9.21, 250mL
What is this article?
Certified buffer pH 9.21, 250mL is the article on this page. Luminix Health distributes Mettler-Toledo OnLine for laboratory use. It sits in pH buffers & conductivity standards, inside Buffers & pH solutions, in Chemicaliën.
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 Chemicaliën.
Shelves beside this one are Biological buffers (Tris, HEPES, MOPS) and Buffers (other).
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