Beschrijving
Buffer solution DuraCal Set 1 is a three-point pH calibration set with labelled values of pH 4.01, pH 7.00 and pH 9.21 at 25 °C, supplied as 3 × 500 ml bottles (1500 ml in total). The aqueous buffers support pH-value determination and checking of pH electrodes and meters at acidic, near-neutral and mildly alkaline set points. Density is approximately 1 g/cm³; the combined pack weighs 1,801 kg. In the laboratory the three solutions are used in sequence during calibration so displayed readings can be compared with the stated pH values at the 25 °C reference. This DuraCal Set 1 assortment from manufacturer HAMILTON belongs to the pH buffer solutions used when physical properties are assessed by potentiometric pH measurement. Each 500 ml bottle provides a practical working volume for repeated bench calibrations in analytical, quality-control and teaching laboratories. The 4.01 / 7.00 / 9.21 combination covers a common window for aqueous media. The solutions are supplied in three 500 ml bottles as a complete 1500 ml set.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 3 × 500 ml (1500 ml)
- Density: ~1 g/cm³
- pH values: 4.01 / 7.00 / 9.21 (25 °C)
- Weight: 1,801 kg
- Product type: pH buffer solutions
- Safety Data Sheet:
Compliance & Safety Information
GevaarHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about Buffer solution DuraCal Set 1, pH 4.01 / 7.00 / 9.21 (25 °C), 3 × 500 ml
What is this article?
Buffer solution DuraCal Set 1, pH 4.01 / 7.00 / 9.21 (25 °C), 3 × 500 ml is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in pH-buffers & geleidbaarheidsstandaarden, inside Buffers & pH-oplossingen, in Chemicaliën.
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-oplossingen. The sub-category is pH-buffers & geleidbaarheidsstandaarden. The catalogue is Chemicaliën.
Shelves beside this one are Biologische buffers (Tris, HEPES, MOPS) and Buffers (overig).
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