1. COST MATERIALS FOR APPLICATION IN LABORATORY RENTGENFLUORESCENT ANALYZERS CERTIFIED STANDARD MATERIALS PLACED IN THE LABEL -1 PCS. ; - STANDARD NICKEL SAMPLE 50 GRAMS / STAN DARD SAMPLE OF NICKEL ORE 50GR. -1 PCS. ; - STANDARD NICKEL SAMPLE 50 GRAMS / STAN DARD SAMPLE OF NICKEL ORE 50GR. -1 PCS. ; - STANDARD NICKEL SAMPLE 50 GRAMS / STAN DARD SAMPLE OF NICKEL ORE 50GR. -1 PCS. ; - STANDARD NICKEL SAMPLE 50 GRAMS / STAN DARD SAMPLE OF NICKEL ORE 50GR. -1 PCS. ; - STANDARD NICKEL SAMPLE 50 GRAMS / STAN DARD SAMPLE OF NICKEL ORE 50GR. -1 PCS. ; - STANDARD NICKEL SAMPLE 50 GRAMS / STAN DARD SAMPLE OF NICKEL ORE 50GR. -1 PCS. ; - STANDARD SAMPLE NICKEL OXIDE PURE FOR ANALYSIS 50 GRAMS / NIO PURE FORANALY SIS 99.95% 50GR. -1 PCS. ; -STANDARD SAMPLE OF COBALT OXIDE PURE FOR ANALYSIS 50 GRAMS / CO3O4 PURE FORANALYSIS 99 95% 50GR. -1 PCS. ; -STANDARD SAMPLE OF IRON OXIDE PURE FOR ANALYSIS OF FE2O3 1 00GRAM / FE2O3 P