Description
pH calibration buffer 4 is a ready-to-use CPY20 buffer solution supplied in a 250 ml pack for precise calibration and adjustment of pH electrodes. The buffers are manufactured and filled in the production laboratory, then verified in the calibration laboratory on a subsample in accordance with ISO 17025 requirements. They are specified with an accuracy of ±0,02 pH and contain only FDA-listed preservatives, supporting dependable readings in both routine and high-precision work. CPY20 pH buffer solutions from manufacturer Endress+Hauser are used across industries for sensor calibration in process and laboratory environments. Adjustment can be performed with the Liquiline Mobile CML18 handheld meter as well as with conventional pH handheld instruments available on the market. Net weight is 0,203 kg (gross weight 0,291 kg). This pH 4 buffer is optimised for everyday electrode checks and for demanding sensor adjustments where traceable, stable reference values are essential.
This article is part of Buffers (other), in Buffers & pH solutions.
Key features
- Pack size: 250 ml
- pH value: 4
- Accuracy: ±0,02 pH
- Verification: ISO 17025
- Preservatives: FDA-listed only
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Questions about pH calibration puffer 4, 250 ml
What is this article?
pH calibration puffer 4, 250 ml is the article on this page. Luminix Health distributes Endress+Hauser for laboratory use. It sits in Buffers (other), inside Buffers & pH solutions, in Lab chemicals.
These are buffer solutions and salts that are not a pH calibration standard and not a named biological buffer. The pH, the concentration and the identity of the ions are the specification. A buffer has a capacity. Diluted too far, it is only salty water.
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 Buffers (other). The catalogue is Lab chemicals.
Shelves beside this one are pH buffers & conductivity standards and Biological buffers (Tris, HEPES, MOPS).
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.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.