Burettes
En chimie analytique et quantitave, les burettes sont utilisées pour mesurer les solutions liquides et les gazs. Contrairement aux pipettes, étant donné la fluctuation des quantités d'échantillons, les burettes sont principalement utilisées dans les expériences de titrages. Le robinet d'arrêt se situe à la fin du tube verticale sur les modèles destinés à la mesure de liquides, alors qu'il se situe au sommet du tube sur les modèles destinés à la mesure de gazs. Pour une précision sans faille, Avantor recommande ses burettes numériques.
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Borosilicate Glass Geissler Burets
Student grade buret with fitted glass stopcock.
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Acrylic PMP/PE Stopcock, Geissler Burets
Inexpensive, break-resistant burets ideal for school use.
Each clear acrylic buret is furnished with a polymethylpentene stopcock body, polyethylene stopcock key, nitrile rubber sealing rings, and a polypropylene tip. The burets are individually calibrated to conform to B.S. 846 Class B.
Designed for use with acids and bases; exposure to alcohol and organic solvents should be avoided.
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Self-Zeroing Automatic Buret Kit
Nalgene® This kit makes any 25 or 50 mL buret both auto-filling and self-zeroing. With 1000 mL squeeze bottle, 1.2 m of clear flexible tubing and fill tube with adapter. Buret not included.
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Borosilicate Glass Burettes with Pinch Clips
Single bore burettes with detachable rubber tube and pinch clip.
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Eisco Acrylic Burettes with PTFE Key Stopcock, Class B
Lightweight and durable.
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Eisco Glass Burettes with PTFE Key Stopcock
PTFE key stopcock offers superior chemical resistance and low therma.
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Eisco Premium Glass Burettes with Glass Key Stopcock
All-glass stopcock for smooth motion and flow adjustment.
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Eisco Glass Burettes with PTFE Needle Valve Stopcock
Needle valve control knob for the greatest flow rate range.