Description
Buffer solution with dosing cap pH 4,01 (25 °C) yellow is a technical pH buffer prepared according to DIN 19267 and traceable to standard reference materials from PTB and NIST. At 25 °C it delivers a defined value of pH 4,01, making it suitable for calibration and verification of pH electrodes and meters in analytical, research and industrial laboratories. The yellow colour coding supports rapid visual identification on the bench and helps avoid mix-ups between different buffer standards. This 1000 ml pack is supplied in a natural HDPE dosing bottle fitted with a 28 mm guarantee closure. The integrated dosing cap allows convenient dispensing of 20 ml and 25 ml aliquots, supporting consistent routine calibration workflows. From manufacturer IDL GmbH, the formulation is intended for technical laboratory use where standardised, reference-traceable buffer values are required. The robust HDPE bottle offers practical day-to-day handling, while the guarantee closure helps maintain integrity until first opening. A reliable choice whenever a ready-to-use yellow pH 4,01 buffer in a generous volume with built-in dosing convenience is needed.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 1000 ml
- pH value: 4,01 (25 °C)
- Colour: Yellow
- Standard: DIN 19267
- Traceability: PTB and NIST reference materials
- Bottle: HDPE dosing bottle, 28 mm guarantee closure
- Technical Information Sheet:
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Questions about Buffer solution in handy dispensing bottle pH 4,01 (25°C) yellow, 1000 ml
What is this article?
Buffer solution in handy dispensing bottle pH 4,01 (25°C) yellow, 1000 ml is the article on this page. Luminix Health distributes IDL GmbH 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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