Description
pH buffer solution pH 4,00 ± 0,01 is supplied in a 500 ml Twin-Neck dosing bottle designed for clean, controlled dispensing during electrode calibration. The separate compartment layout removes the need for a second vessel in the calibration step and helps preserve the purity of the remaining buffer. The coloured formulation aids visual identification and lowers the chance of selecting the wrong standard in multi-buffer sequences. A pH-versus-temperature table on the label supports accurate use across typical laboratory temperatures. Traceable SRM certificates according to NIST are available, consistent with metrological practice for reference buffers. This LABKEM preparation from manufacturer Labbox is suited to routine acidic-range calibration, instrument verification and quality-control work. After opening, the solution should be used within 12 to 15 months. Net weight is 0,600 kg for the 500 ml fill. The dosing-bottle format is practical for busy benches where contamination control and ease of handling matter.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
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Questions about pH Buffer solution with measuring chamber, pH 4,00 ± 0,01, 500 ml
What is this article?
pH Buffer solution with measuring chamber, pH 4,00 ± 0,01, 500 ml 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).
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

