Product Guide
pH buffer standard
A defined pH reference solution for checking or calibrating a pH measurement system. Certified pH values depend on temperature; nominal pH, uncertainty and the certificate must match the intended calibration points.
Practical purchasing guidance for universities, research laboratories, industry and institutional buyers.
Applications and workflows
Typical workflows help you define the application and compare suitable product configurations.
- Instrument calibration and independent quality checks
- Laboratory measurement and process quality control
- Raw-material identification and quality control
Technical selection criteria
Include these parameters in your inquiry to align laboratory users, technical teams and purchasing.
- Required pH, buffering range and measurement temperature
- Certified value, uncertainty and metrological traceability
- Shelf life, opening stability and storage instructions
- Concentration, units and preparation basis
Variants and compatibility
Reference solutions differ by analyte, certified value, matrix, uncertainty and expiry. Match all of these to the method; an ordinary reagent or another concentration is not a documented equivalent.
Documentation and delivery
Request the current safety data sheet and a specification or batch analysis appropriate to the intended grade. Confirm identity and impurities before substituting a salt, hydrate or grade. Transport status must be assessed for the supplied form and quantity.
Confirm the required documents, packaging and delivery conditions for the selected item and destination.
Listed Scharlab products
Published catalogue items associated with this product name. Compare exact grades and specifications for your application.
Scharlau pH 7.00 buffer solution at 25 °C, yellow
SO30070250
Scharlau pH 7.00 buffer solution at 20 °C, yellow
SO20070250
Scharlau pH 7.00 buffer solution at 20 °C (phosphate)
SO10070250
Scharlau pH 4.00 buffer solution at 25 °C, red
SO30040250
Scharlau pH 4.00 buffer solution at 20 °C, red
SO20040250
Scharlau pH 4.00 buffer solution at 20 °C (potassium hydrogen phthalate)
SO10040250
Scharlau pH 10.00 buffer solution at 25 °C, blue
SO30100250
Scharlau pH 10.00 buffer solution at 20 °C, blue
SO20100250
Scharlau pH 10.00 buffer solution at 20 °C (carbonate/bicarbonate)
SO10100250
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