Washing a newly purchased glass cup is essential to remove any manufacturing residues, dust, or contaminants that may be present. Here's a step-by-step guide on how to wash a new glass cup:

1. Inspect the Glass:

   • Before washing, inspect the glass for any visible defects, stickers, or labels. Remove any stickers or labels, and check for manufacturing residues.

2. Rinse with Warm Water:

   • Rinse the glass thoroughly under warm running water. This helps remove any loose particles or dust on the surface.

3. Use Dish Soap:

   • Apply a small amount of mild dish soap to a sponge or soft brush. Gently scrub the entire surface of the glass, including the interior and exterior.

4. Clean Inside and Outside:

   • Pay attention to both the inside and outside of the glass. Use a long-handled brush if needed to reach the bottom of the glass.

5. Check Seams and Rims:

   • Pay special attention to seams, rims, and any intricate designs on the glass. Ensure that these areas are thoroughly cleaned.

6. Rinse Again:

   • Rinse the glass thoroughly under warm running water to remove any soap residue. Make sure all soap is completely washed away.

7. Inspect for Residues:

   • After rinsing, inspect the glass again to ensure there are no soap residues or particles left.

8. Air Dry or Towel Dry:

   • Allow the glass to air dry on a clean and dry surface. Alternatively, you can use a clean, lint-free towel to dry the glass.

9. Optional: Sanitize:

   • If you prefer, you can sanitize the glass by using a solution of water and a small amount of vinegar or by using a sanitizing solution suitable for glassware. Rinse thoroughly after sanitizing.

10. Store or Use:

    • Once the glass is clean and dry, it is ready for use. Store it in a clean and dust-free environment.

By following these steps, you ensure that your newly purchased glass cup is clean, free of contaminants, and ready for safe use.