ashing 1100 C preheated airflow

ashing ~ 1100°C • • preheated airflow – to avoid cooling & ensure good uniformity rapid air changes – to provide air/oxygen and carry fumes away heavy duty ceramic material construction - to ensure longevity elements covered by insulation – to ensure no contamination

ashing ~ 1100°C • preheated airflow – to avoid cooling • rapid air changes – to provide air/oxygen and carry fumes away heavy duty ceramic material construction - to ensure longevity elements covered by insulation – to ensure no contamination • • AAF 11/3 & 7 Design

ashing ~ 1100°C • • • preheated airflow – to avoid cooling air changes – to provide air/oxygen and carry fumes away heavy duty Si. C tiles covering elements to protect - to ensure longevity Element Si. C protective tile AAF 11/18 Air flow inlets AAF 11/18 design

chimney pre heating inlet AAF 11/3 & 7 air is drawn between insulation layers, pre-heating incoming airflow

uniformity graph The coloured lines indicate temp measurement and therefore show good uniformity from front (left) to rear (right) of chamber

ashing ~ applications some typical examples: • ashing enviromental samples ~ Yorkshire Water Co • ashing paint samples ~ Nippon Paint Co • ashing rubber samples ~ Avon Rubber Co • ashing of food containers ~ Rexon Packaging Co • After ashing the samples are analyised using IC or AA