Description
Buffer solution pH 4,01 is a standard-quality reagent for pH electrode and meter calibration, offering a defined acidic reference point with an accuracy of ±0,01 pH. Each pack contains 25 single-use sachets of 20 ml, so only the volume required for a given calibration is opened, limiting contamination and waste compared with multi-use bottles. The stated pH value of 4,01 supports routine two- or multi-point calibration workflows in analytical and quality-control laboratories. A certificate of analysis is supplied with the pack, and traceability is established to NIST standards for documentation and method validation. This buffer from manufacturer Hanna Instruments is intended for everyday verification of pH measurement systems in research, industrial and environmental testing environments. The sealed sachet format helps preserve solution integrity until the moment of use and simplifies bench or field calibration. Net weight is 0,654 kg and gross weight is 1,654 kg. Country of origin is Romania. These characteristics make the product a practical choice wherever a documented, ready-to-use pH 4,01 standard is required.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 25 sachets of 20 ml
- pH value: 4,01
- Accuracy: ±0,01 pH
- Certificate of analysis: included
- Traceability: NIST
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Questions about 4.01 pH Value @25°C, (25) 20 mL sachets with Certificate of Analysis
What is this article?
4.01 pH Value @25°C, (25) 20 mL sachets with Certificate of Analysis is the article on this page. Luminix Health distributes Hanna Instruments 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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