The "Gold Label" of Pu 5
'Baker Analyzed'
P S rimary
tandards
W h e n you need Reagent Chemicals with the most exacting definition of purity for use as reference standards or in the preparation of standard solutions—specify these 5 'Baker Analyzed ' PRIMARY STANDARDS.
Arsenic Trioxide · Benzoic Acid Potassium Biphthalate Potassium Dichromate · Sodium Oxalate
Baker PRIMARY STANDARDS have been especially manufactured, controlled, and evaluated to provide these features: They have an assay
greater
than
99.95%.
They are stable compounds of known composition which react quantitatively with the solution to be standardized. They are relatively
non-hygroscopic.
These PRIMARY STANDARDS carry on the label the actual lot analysis of critical impurities—the actual lot analysis is an extra value you get with all 'Baker Analyzed' Reagents. For instant identification, all Baker PRIMARY STANDARDS will feature a gold label instead of blue. The next time you order 'Baker Analyzed' Reagents from your favorite laboratory supply house, include your requirements for 'Baker Analyzed' PRIMARY STANDARDS.
J. T. BAKER
CHEMICAL
CO.
Executive Offices and Plant, Phillipsburg, N. J.
Baker Chemicals REAGENT For further information, circle "2nd Cover" on Readers' Service Card, page 51 A
·
FINE
·
INDUSTRIAL
