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11921 Sigma-Aldrich

Buffer Standard solution pH 4.01

ready-to-use, bag with 30 ml, traceable to NIST standards

Synonym: Potassium phthalate buffer solution

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Properties

quality   bag with 30 ml
  traceable to NIST standards
shelf life   limited shelf life, expiry date on the label
impurities   potassium hydrogen phthalate

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Other Notes

Same product — same quality — now Sigma-Aldrich brand

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