Description
Buffer solutions in sachets, set of 20 sachets, pH 4 / 7 / 10 is a ready-to-use kit for simple, clean and safe calibration of pH electrodes. The set contains twenty 25 ml sachets: six buffer solution pH 7,00, six buffer solution pH 4,01, six buffer solution pH 10 and two sachets of purified water for intermediate rinsing. Each sachet is opened only immediately before use, so the solutions remain fresh and unaltered until the moment of calibration. Corresponding pH and temperature reference values are printed on every sachet, and a batch test certificate is supplied with the set. A cardboard stand holds the open sachet securely during the measurement, reducing spillage and handling errors. This practical format from manufacturer Windaus under the Winlab® brand supports routine electrode checks in quality control, research and teaching laboratories. Nominal volume per sachet is 0,025 l, giving a compact, single-use presentation that minimises contamination risk and simplifies multi-point calibration workflows with pH 4,01, 7,00 and 10 standards plus rinse water.
This article belongs on pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 1 set
- Contents: 20 sachets × 25 ml
- Buffer values: pH 4,01 / 7,00 / 10
- Composition: 6 × pH 4,01, 6 × pH 7,00, 6 × pH 10, 2 × purified water
- Nominal volume: 0,025 l per sachet
- Brand: Winlab®
- Technical Information Sheet:
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Questions about Buffer solutions in bags, set with 20 bags, pH 4 / 7 / 10
What is this article?
Buffer solutions in bags, set with 20 bags, pH 4 / 7 / 10 is the article on this page. Luminix Health distributes Windaus 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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