1.Leak Testing: Ensures the glass dropper bottles are airtight and watertight to prevent leakage and maintain product integrity. Common methods include vacuum decay tests and dye penetration tests.

2.Drop Testing: Simulates real-world handling and transportation conditions by dropping the bottles from various heights and angles. This assesses their durability and resistance to impact, adhering to standards like ASTM D5276.

3.Capacity and Consistency Testing: Verifies that the dropper mechanism dispenses the correct amount of product consistently, ensuring accurate dosing for consumers.

4.Visual Inspection: Checks for defects, imperfections, or inconsistencies in the glass surface to ensure both functionality and aesthetic appeal. Inspections are conducted under various lighting conditions to detect scratches, chips, and air bubbles.

5.Printing and Coating Quality: For bottles with printed or coated surfaces, a 100-grid test is performed to assess the adhesion of the coating.

6.Compatibility Testing: Ensures the dropper and bottle components fit securely and provide precise dispensing capabilities.

When it comes to glass dropper bottles, selecting the right accessories is essential for enhancing functionality, ensuring product integrity, and delivering a premium user experience. Here are the key accessories options:

1.Dropper Bulbs: Silicone or rubber bulbs provide precise suction control, available in various sizes to match bottle capacity and product viscosity.

2.Glass Pipettes: High-quality glass pipettes with straight, bulb, or bent bulb tips offer durability and precision, with optional graduations for accurate dosing.

3.Wipers: Installed at the bottle finish to remove excess product from the pipette, ensuring clean dispensing for thicker formulations.

4.Caps and Closures: Polypropylene (PP) or HDPE caps with child-resistant and tamper-evident designs ensure product safety and integrity.

5.Bottle Options: Available in clear, frosted, or colored glass, with sizes ranging from 2ml to 30ml to suit diverse product needs.

6.Customization: Silk-screen printing, hot stamping, and metallization enhance brand identity, while customizable pipette lengths and bottle finishes meet specific requirements.

1. Matte Finish: A non-reflective surface treatment that provides a soft, frosted appearance to the glass dropper bottles.

2.Gradient Coloring: A color transition effect applied to the glass, creating a smooth blend of two or more colors.

3.Transparent and Translucent Effects: The ability to see through the glass (transparent) or to allow light to pass through but not detailed shapes (translucent).

4.Metallic Luster: A finish that gives the glass a shiny, metallic appearance, often used to simulate the look of precious metals.

5.Screen Printing: A printing technique where ink is forced through a mesh screen onto the glass surface, allowing for detailed designs and logos.

6.Hot Stamping: A process where foil is heated and pressed onto the glass to create a shiny, metallic design or text.

7.Special Coatings: Such as UV coatings, which provide additional protection against harmful UV rays and extend the shelf life of light-sensitive products.