A weighing bottle is an essential piece of laboratory equipment used for precise sample handling. It is typically a small, cylindrical container with a ground-glass stopper or a screw-on cap. Weighing bottles are designed to minimize sample loss and contamination during weighing and transfer.
Glass weighing bottles are commonly made of borosilicate glass, known for its resistance to chemical attack and thermal shock. Plastic weighing bottles, such as those made of polypropylene or PTFE, are suitable for certain applications where glass may be unsuitable, such as when working with corrosive chemicals or at high temperatures.
The primary function of a weighing bottle is to accurately weigh small amounts of solid or liquid samples. Before weighing, the bottle is carefully cleaned and dried to remove any contaminants. The sample is then transferred to the bottle, and the combined weight is measured using an analytical balance. The bottle and sample are then weighed again after a portion of the sample has been removed, allowing for accurate determination of the sample’s weight.
Available in Small Size:
- 25*25 mm
- 40*25 mm
- 50*30 mm
- 60*30 mm
- 70*35 mm
- 70*40 mm
Available in Tall size:
- 25*40 mm
- 30*50 mm
- 30*60 mm
- 35*70 mm
- 40*70 mm
Usage of Weighing Bottle:
- Weighing Samples: Accurately weighing solid or liquid samples for chemical analysis, experiments, or other laboratory procedures.
- Sample Storage: Temporarily storing small amounts of samples for short periods.
- Sample Transfer: Conveniently transferring weighed samples to other containers.
How to Use Weighing Bottle:
- Cleaning: Thoroughly clean weighing bottles before and after use to prevent contamination.
- Handling: Handle weighing bottles with clean forceps or gloved hands to avoid introducing moisture or oils.
- Weighing: Use an analytical balance for accurate weighing.
- Transferring: Carefully transfer the sample to the desired container, minimizing sample loss.