Of all the common laboratory test methods, the Kjeldahl method for determining nitrogen subjects the boiling flask to the most severe thermal and chemical abuse. These Kjeldahl flasks, specially styled, have tooled finished necks for extra strength and uniform stopper fit. Wall thickness is controlled to offer the optimum balance between thermal shock and chemical resistance. Can be used in ASTM E-258 procedure. Care must be taken to ensure the bottoms of the flasks do not come in contact with the heating elements. Most Kjeldahl equipment manufacturers have ring supports for this purpose. Reference: ASTM E-1377.

Item Number	Item Description	PQ
CG-8538-100	Flask, 100mL, Kjeldahl, Long Neck	P6
CG-8538-300	Flask, 300mL, Kjeldahl, Long Neck	C24
CG-8538-500	Flask, 500mL, Kjeldahl, Long Neck	C24
CG-8538-800	Flask, 800mL, Kjeldahl, Long Neck	P6