Description
L 4690 is a sterilised pH buffer solution set presented as 2 × 30 sealed ampoules covering the calibration points pH 4,00 and pH 7,00. The buffers are filled in FIOLAX® glass ampoules that keep each portion protected until the moment of use, supporting clean handling in electrode calibration and routine pH meter checks. Every set is supplied with a manufacturer certificate for documentation of quality. The complete pack forms one set with a net weight of 2,35 kg and is intended for analytical laboratories, quality-control departments and research groups that require ready-to-use dual-point buffers. Opening a single ampoule yields a fresh aliquot without the contamination risk of multi-dose bottles. These solutions from manufacturer SI Analytics - a Xylem brand are suited to glass-electrode verification, instrument adjustment and standardised pH measurement workflows where sterilised, certificate-backed reference buffers in ampoule format are preferred. The combination of two common pH values in one set simplifies stock management for daily calibration sequences.
This article is part of pH buffers & conductivity standards, in Buffers & pH solutions.
Key features
- Pack size: 2 × 30 ampoules (1 set)
- Product type: L 4690
- pH values: 4,00 / 7,00
- Ampoule glass: FIOLAX®
- Sterilisation: sterilised
- EAN: 4064664026055
- Technical Information Sheet:
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Questions about L 4690, 2 x 30 ampoules, buffer solution pH = 4.00 / 7.00, sterilized, with
What is this article?
L 4690, 2 x 30 ampoules, buffer solution pH = 4.00 / 7.00, sterilized, with is the article on this page. Luminix Health distributes SI Analytics - a Xylem brand 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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