Description
Specifications Table
Product Name – Buffer solution (biphthalate), pH 4 BAKER ANALYZED™ reagent
Quantity/Pack Size – 500 ml
Form – Liquid
Grade – BAKER ANALYZED™ Reagent
Application – pH calibration, buffer preparation, analytical testing
Product Overview
This pH 4 phthalate buffer solution is a high-precision reagent formulated to meet stringent laboratory standards. As a BAKER ANALYZED™ grade product, it undergoes rigorous quality control to ensure consistency, purity, and accuracy in pH calibration. The solution is prepared using potassium hydrogen phthalate, a stable and reliable compound that maintains a consistent pH value of 4.00 ± 0.02 at 25°C, making it ideal for routine pH meter standardization. Its low ionic strength minimizes interference in electrochemical measurements, while the absence of heavy metals and impurities ensures reliable results in sensitive applications. The solution is ready-to-use, eliminating the need for dilution or preparation, and is packaged in a high-density polyethylene (HDPE) bottle to prevent contamination and degradation. Whether used in research, quality control, or educational settings, this buffer solution provides the stability and reproducibility required for accurate pH measurements. The 500 ml pack size offers convenience for frequent calibration needs without excessive storage concerns.
FAQs
1. What is the shelf life of this pH 4 phthalate buffer solution?
The shelf life is typically 24 months from the date of manufacture when stored unopened at room temperature in its original packaging. Always check the label for the exact expiry date.
2. Is this buffer solution compatible with glass electrode pH meters?
Yes, this solution is fully compatible with standard glass electrode pH meters and is designed to provide accurate calibration for most laboratory-grade pH measurement systems.
3. Can this solution be used for preparing secondary buffer standards?
While primarily intended for direct calibration, it can be used as a reference for preparing secondary standards, provided proper dilution protocols and recalibration are followed.
4. How should this buffer solution be stored to maintain its accuracy?
Store the solution in a tightly sealed container at room temperature (15–25°C), away from direct sunlight and moisture. Avoid freezing or exposure to extreme temperatures.
5. Does this buffer contain any preservatives or stabilizers?
This BAKER ANALYZED™ buffer solution is formulated without added preservatives, relying on the inherent stability of potassium hydrogen phthalate for long-term accuracy.
