Comparison : Item # QF-28-1, Flask, Dewar, Low Form, Hemispherical
Item # QF-28-2, Flask, Dewar, Low Form, Hemispherical
Item # QF-28-3, Flask, Dewar, Low Form, Hemispherical
Item # QF-28-4, Flask, Dewar, Low Form, Hemispherical
Item # QF-28-5, Flask, Dewar, Low Form, Hemispherical