Corning™ PYREX™ Long Neck Kjeldahl Flasks

Long necks, round bottoms, substantial walls

Catalog Number	Mfr. No.	Capacity (Metric)
10-110E	Corning™ 5420500	500 mL
10-110G	Corning™ 5420800	800 mL
10-110D	Corning™ 5420300	300 mL
10-110C	Corning™ 5420100	100 mL

Description

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.

Compliance

30mL meets ASTM™ E 147; 100mL and larger meet ASTM E 258 requirements

Specifications

• Material: Borosilicate Glass
• No. per Pack: 6/Pk.
• Bottom Shape: Round

• Neck Style: Long
• Disposable: Reusable