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HomeAll CategoriesLaboratory ChemicalsAnalytical StandardsScharlau pH 7.00 buffer solution at 25 °C, yellow
Representative Scharlau packaging for Scharlau pH 7.00 buffer solution at 25 °C, yellow — SO30070250

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ScharlauAnalytical Standards

Scharlau pH 7.00 buffer solution at 25 °C, yellow

Manufacturer product code
SO3007

Scharlau SO30070250: potassium dihydrogen phosphate/disodium hydrogen phosphate buffer, yellow-coloured, pH 7.00 at 25 °C. Published pH range 6.99–7.01, uncertainty ± 0.01; batch pH measured with a combination glass electrode using five-point calibration according to DIN 19268. Pack: 250 mL plastic bottle.

Applications
  • pH meter and electrode calibration at the appropriate temperature
  • Reference checks for pH measurements around pH 7.00
Packaging options
SO30070250 — x 250 ml :: Plastic bottle

Product specifications and documentation are confirmed against the requested reference before quotation.

Product information

Overview

Scharlau SO30070250 is a potassium dihydrogen phosphate/disodium hydrogen phosphate buffer with a reference pH of 7.00 at 25 °C. The formulation is yellow-coloured. Its pH specification is 6.99–7.01, with an uncertainty of ± 0.01. The composition is 3.5 g potassium dihydrogen phosphate and 12.5 g disodium hydrogen phosphate per litre. It contains a preservative. Batch pH is measured with a combination glass electrode using five-point calibration according to DIN 19268. The density is ~ 1.00 g/cm³; the solution is miscible with water at 20 °C. Supplied in a 250 mL plastic bottle; temperature/pH reference values cover 0–50 °C.

  • Pack quantity / capacity: 250
  • Measurement unit: Millilitre (mL)
  • Package type: Bottle
Packaging and references
  • 250 mL · Bottle
  • SO30070250 — x 250 ml :: Plastic bottle
Selected specifications
  • Reference pH at 25 °C: 7.00
  • pH specification range: 6.99–7.01
  • Uncertainty: ± 0.01
  • Composition: 3.5 g potassium dihydrogen phosphate and 12.5 g disodium hydrogen phosphate per litre
  • Density: ~ 1.00 g/cm³
  • Miscibility with water at 20 °C: miscible
  • Batch pH measurement: combination glass electrode; five-point calibration according to DIN 19268
  • Temperature/pH values: 0 °C: 7.12; 5 °C: 7.09; 10 °C: 7.06; 15 °C: 7.04; 20 °C: 7.02; 25 °C: 7.00; 30 °C: 6.99; 35 °C: 6.98; 40 °C: 6.97; 45 °C: 6.96; 50 °C: 6.96
  • Colour: yellow
  • Contains preservative
  • Nominal pH (25 °C): 7.00
  • Classification in English UK REACH SDS: not classified under GB CLP.
  • English SDS: UK REACH edition; revision 06.09.2026.
  • ADR entries in DE SDS §14: UN number, class and packing group marked not applicable.
  • Manufacturer's representative package image; the applicable product label is identified by the manufacturer reference.
  • Technical data sheet available. Lot-specific certificate of analysis is supplied with the corresponding batch when available.
Applications
  • pH meter and electrode calibration at the appropriate temperature
  • Reference checks for pH measurements around pH 7.00

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