Quick Answer: The Ni-Cr Wire for Spectral Analysis is a nickel-chromium alloy wire used to hold salt samples in a flame for flame tests and emission spectrum observation. It withstands repeated heating and can be cleaned between samples.
Last updated: October 2026
Key Features
Nickel-chromium alloy wire
Withstands repeated heating in a Bunsen burner or spirit lamp flame
Cleaned by heating until no colour contamination remains
Used to observe the characteristic flame colours of metal salts
The flame can be viewed through a spectroscope, prism or diffraction grating for spectral lines
Technical Specifications
Specification
Value
Material
Nickel-chromium alloy wire
Use
Flame tests, emission spectrum observation, spectroscopy demonstrations, sample heating support
In a flame test, the cleaned wire carries a small amount of a metal salt into the flame, and the colour produced points to the metal present. Looking at the same flame through a spectroscope turns the colour into a set of lines, linking a chemistry test to atomic emission. Educational Instrument can dispatch the Ni-Cr string for spectral analysis to laboratories in Tajikistan, Iceland, Lithuania, Papua New Guinea and Grenada.
Frequently Asked Questions
How is the Ni-Cr wire cleaned between samples?
Heat it in the flame until no visible colour contamination remains, let it cool, then dip it into the next prepared sample.
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