 Ebe a, anyị kwadebere nụzọ zuru ezu set nke ule ngwá, gụnyere ngwa anya emission spectroscopy na plasma spectrometer si America, ndị atọm absorption spectrophotometer si England, na metallographic microscope image analyzer si Carl Zeiss, na eluigwe na ala tester si Shimadzu, na cross- ngalaba nihe usoro si Israel. 