Used Products for sale: 

Stack Monitoring Price  Portable Instrinsically safe Data fid (newly refurbished) £2,700  Signal heated fid £1,400 Ecophyics Nox analyer £500 Heated line controller k type £300 Environment SA MIR IS multi gas cem £2,300    

Ambient Monitoring  Real time Tsi Dusttrak II £2,600 iom sampling head £35