CALCIUM

MALLINCKRODT. CALCIUM. CARBONATEAR. PRIMARY STANDARD. OTHER. MALLINCKRODT. PRIMARY. STANDARDS. KI03 c6h5cooh. NCI2C2O4...
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WHAT'S IN MALLINCKRODT CALCIUM CARBONATE AR PRIMARY

STANDARD

The answer: Exceptional purity . . . the " e l e m e n t " o f q u a l i t y that distinguishes a l l Mallinckrodt Primary S t a n d a r d s . In 1912, Mallinckrodt manufactured the first chemical Primary S t a n d a r d issued b y the N a t i o n a l Bureau o f S t a n d a r d s . . . a n d now produces the most complete line o f these OTHER MALLINCKRODT PRIMARY STANDARDS

KIO3

e x t r e m e l y pure chemicals. The special skills required t o manufacture Primary S t a n d a r d s . . . a r e v i t a l factors in maintaining highest quality in a l l Mallinckrodt AR's.®

C 6 H 5 C00H Na 2 C 2 0 4 KHC 8 H 4 0 4 As 2 0 3 Na 2 C0 3 CaC0 3

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