St Ronan's principal alarmed at explosively unstable chemical
A school principal has said "alarm bells" went off in her head after she was told her classroom might contain an explosively unstable chemical.
A warning was issued to 14 schools in Northern Ireland this week that a chemical commonly used for A-Level chemistry experiments could have posed a risk to students.
The substance - 2,4 DNP (Dinitrophenyl hydrazine) - is safe when stored correctly, but is at risk of exploding if it dries out.
The alert came from advisory body, the Consortium of Local Education Authorities providing Science Services.
On Monday, St Ronan's College in Lurgan was the sixth school to be contacted about the potential hazard.
St Ronan's Principal Michelle Corkey said the news was unnerving, but quickly dealt with.
Other schools affected included Ballycastle High School and the Royal School and St Catherine's College in Armagh.