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Erlenmeyer Flasks: a Blown Bulb Shaped into a Cone
Emil Erlenmeyer's flask of 1860 is a flat-bottomed cone with a straight neck: it can be swirled without spilling, vapour condenses on its sloping walls, and a funnel sits in its neck. Blow a bulb on a tube as for any flask, then shape it into a cone with a paddle while it turns and press the base flat.
The picture: an Erlenmeyer flask, drawn by NIAID (NIH BioArt).
高级
An hour per flask, plus annealing
说明
1
1
Blow a bulb
Blow a bulb
Close one end of a tube, gather glass and blow a thick-walled bulb a little larger than the base you want.
此步骤所需材料：
玻璃管套件1 个所需工具：
台式玻璃吹制喷灯
安全眼镜
耐热手套2
2
Shape the cone
Shape the cone
Reheat the bulb and, turning steadily, press the upper part in with a flat paddle held at an angle while blowing gently, so the sides run straight from the base to the neck.
所需工具：
台式玻璃吹制喷灯
滚料板（玻璃成型用平铁板）耐热手套3
3
Flatten the base
Flatten the base
Soften the bottom and press it flat on the marver so the flask stands level.
所需工具：
台式玻璃吹制喷灯滚料板（玻璃成型用平铁板）4
4
Finish the neck
Finish the neck
Cut the tube to neck length, fire-polish and flare the rim slightly with the jacks.
所需工具：
金刚石划针台式玻璃吹制喷灯
Jacks（玻璃工钳）5
5
Anneal and mark
Anneal and mark
Anneal in the kiln and cool slowly. Fill with measured water and scratch rough volume marks.
此步骤所需材料：
水0.5 升所需工具：
窑炉
量筒金刚石划针6
6
Cone volume
Cone volume
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