Description
Buffer solutions pH 4,01 and 7,01 are standard-quality reagents designed for accurate calibration of pH measuring systems. Each pack supplies five sealed 20 ml sachets per pH value, resulting in ten ready-to-use portions and a unit quantity of 10 pc(s). The buffers are formulated to an accuracy of ±0,01 pH, making them suitable for one- or two-point electrode calibration between the acidic and neutral regions. Traceability to NIST underpins consistent readings in laboratory, process and field applications. Individual sachets protect each aliquot from air exposure and cross-contamination until opened, which is advantageous for operators who calibrate frequently or work away from a fixed bench. These pH calibration buffers from manufacturer Hanna Instruments serve quality-control laboratories, environmental monitoring, teaching facilities and general analytical workflows. Net weight is 0,265 kg and gross weight 1,265 kg. By providing five fresh 20 ml portions at pH 4,01 and five at pH 7,01, the set supports repeatable electrode verification while maintaining the stated standard quality and accuracy for successive calibration cycles.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 10 pc(s)
- Product type: pH buffer solutions
- pH values: 4,01 and 7,01
- Content: 5 sachets of 20 ml per pH value
- Accuracy: ±0,01 pH
- Quality: Standard quality
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Questions about 4.01 & 7.01 pH Value @25°C, (10) 20 mL sachets (5each)
What is this article?
4.01 & 7.01 pH Value @25°C, (10) 20 mL sachets (5each) 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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Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. 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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