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  • leeds northrup company 1923 hydrogen-ion determination vintage ad

Original vintage optical industry trade magazine ad for LEEDS AND NORTHRUP COMPANY of Philadelphia, PA.  The Standard for Hydrogen Ion Determinations.  H-ion. Type K Potentiometer Equipment for measurements of extreme precision.  Old 1923 laboratory electrical measuring instruments advertisement

leeds northrup company 1923 hydrogen-ion determination vintage ad

  • Product Code: s295
  • Length: 9 inches
  • Width: 6 inches
  • Pages: 1
  • Views: 22
  • Availability: In Stock
  • $20.00
  • $15.00

    ON SALE
    25% OFF

  • You save: $5.00 (25%)

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