Buffer solutions

For sample preparation with pre-made ion strength adjuster solutions (ISA and TISAB) for the direct concentration determination with ion selective electrodes....

Osmolality Standards for calibration and control, compatible with all types of osmometers. Extensive range: 50 to 3000 mOsmol/kg H ₂O, ISO 17025 certified. Values from 100 to 700 mOsmol/kg H ₂O according to European Pharmacopoeia 2.2.35 and US Pharmacopeia 785. 12 ampoules of 5 ml each....

Colour coded. pH values at 25°C. Provided with label that gives the pH value at different temperatures. Supplied in 250ml containers. Tolerance ± 0.02 pH....

For calibration of pH measurement. Buffer solutions in the double-end ampoules offer a particularly high degree of reliability and measuring accuracy.

• Hot steam sterilised, very long shelf life
• Without preservatives
• With manufacturer certificate
• 20 ml ampoules with approx. 17 ml content

Without colour coding, hot steam sterilized. Stated pH values at 25 °C. Available in 250 ml containers. Shelf life approx. 2 years, accuracy ±0.02 pH....

pH 7. In a HDPE bottle....

Ready-to-use. pH 4, 7 and 9. pH values at 25 °C. Tolerance ± 0.02 pH....

For accurate and reproducible calibration of pH meters and pH electrodes.

• Colour-coded
• NIST™-traceable standard reference materials
• Bottles of 475 ml

With test certificate acc. to EN 10204-2.3....

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