Description
Buffer solution pH 4,01 is a ready-to-use aqueous standard for calibration and verification of pH meters and electrodes in laboratory and process settings. Supplied in a 500 ml plastic bottle, this standard-quality buffer provides an accuracy of ±0,01 pH and includes a certificate of analysis documenting batch-related values. Traceability to NIST reference materials supports consistent measurement practice and quality records. Laboratories commonly employ the pH 4,01 point as the acidic anchor in multi-point calibrations to establish reliable electrode slope and offset across the acidic range. The formulation from manufacturer Hanna Instruments is filled in a robust plastic bottle suited to benchtop use and everyday handling. With a net weight of 0,58 kg and a gross weight of 1,58 kg, the pack is practical to store beside instruments. Clear labelling of the nominal pH value helps ensure correct selection during calibration workflows. This buffer supports daily electrode checks, method validation and instrument qualification in analytical chemistry, environmental testing, food laboratories and teaching laboratories where reproducible pH measurement is required.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 500 ml plastic bottle
- 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, 500 mL bottle with Certificate of Analysis
What is this article?
4.01 pH Value @25°C, 500 mL bottle 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?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.