Description
pH calibration buffer 7 is a ready-to-use CPY20 buffer solution in a 250 ml pack intended for accurate calibration and adjustment of pH electrodes. Production and filling take place in the manufacturing laboratory; subsequent verification is performed in the calibration laboratory on a subsample according to ISO 17025. The buffers are specified to an accuracy of ±0,02 pH and use only FDA-listed preservatives, helping laboratories and process plants obtain correct, reproducible values. CPY20 pH buffer solutions from manufacturer Endress+Hauser serve all industries for calibration and adjustment of pH sensors in daily operation and in high-precision process or laboratory settings. Calibration can be carried out with the Liquiline Mobile CML18 handheld instrument and with all conventional pH handheld meters on the market. Net weight is 0,210 kg (gross weight 0,301 kg). This neutral pH 7 reference is a standard point for two- or multi-point electrode adjustment workflows.
This article is part of Buffers (other), in Buffers & pH solutions.
Key features
- Pack size: 250 ml
- pH value: 7
- Accuracy: ±0,02 pH
- Verification: ISO 17025
- Preservatives: FDA-listed only
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Questions about pH calibration buffer 7, 250 ml
What is this article?
pH calibration buffer 7, 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.