GUANGZHOU PANYUE PACKING.CO.,LTD. tell you the quality of glass bottles can be tested in the following ways:

1. Visual inspection: firstly, the appearance quality of glass bottles can be assessed by visual inspection. Check that the bottle has no visible blemishes, defects, cracks or uneven colours. Also make sure that the mouth of the bottle is flat and not broken or chipped.

2. Sound Test: Gently tap the glass bottle and listen to the sound it makes. A good quality glass bottle should make a crisp, bright sound, while a poor quality bottle may make a dull, low sound.

3. Light transmission test: Place the glass bottle under a light source and observe how the light passes through the wall of the bottle. High quality glass bottles should have good light transmission and should not have visible impurities, bubbles or uneven colours.

4. Weight test: Use an accurate balance to measure the weight of the glass bottle. Good quality glass bottles usually have a certain weight because they use thicker glass materials.

5. Pressure test: Apply a certain amount of pressure to the glass bottle and observe whether it will break or deform. High quality glass bottles should have high pressure resistance and be able to withstand a certain amount of external force without breaking.

These are commonly used glass bottle quality testing methods, which can help determine whether the quality of glass bottles meets the requirements. At the same time, there are more sophisticated and precise testing methods and equipment used to assess the quality of glass bottles during production and quality control.