What are the main testing items for foreign trade export glass bottles?

The main testing items for foreign trade export glass bottles include:

1. Appearance inspection: Check for visible blemishes, defects, cracks, uneven colors, and ensure the bottle mouth is flat and intact.
   
2. Sound test: Tap the bottle gently and listen for a crisp, bright sound to indicate good quality.
   
3. Light transmission test: Place the bottle under a light source to observe if light passes through well, with no visible impurities, bubbles or uneven colors.
   
4. Weight test: Use a balance to measure the weight, as good quality bottles usually have a certain weight due to thicker glass materials.
   
5. Pressure test: Apply pressure to see if the bottle breaks or deforms, to assess its pressure resistance.
   
6. Chemical stability test: Evaluate the bottle's resistance to chemicals, such as acid and alkali resistance, to ensure it won't react with the contents.
   
7. Thermal stability test: Simulate extreme temperature changes to check if the bottle remains stable and doesn't crack or break.
   
8. Sealability test: For bottles with lids or caps, check if they are tightly sealed to prevent leakage or air permeability.
   
9. Dimensional inspection: Measure the bottle's dimensions, including height, diameter, and wall thickness, to ensure they meet the required standards and are suitable for packaging and handling.
   
10. Material composition test: Analyze the raw materials and chemical composition of the glass to ensure compliance with relevant standards and safety requirements.
    
11. Performance test: Assess the bottle's mechanical properties, such as strength, hardness, and impact resistance, to ensure it can withstand the rigors of transportation and handling.
    
12. Safety performance test: For certain applications, such as food and pharmaceutical packaging, check for safety performance, such as the absence of harmful substances like bisphenol A.
    
13. Certification and standards compliance: Ensure the bottles meet international and destination country standards, such as FDA, LFGB, ISO, etc..
    
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