Laboratory glass amber bottles have a wide range of major and common uses due to their ability to protect light-sensitive substances. Some of the key applications include:

1. Chemical Storage: Amber bottles are commonly used to store light-sensitive chemicals, reagents, and solutions in laboratories. This is especially important for substances that can degrade or undergo chemical reactions when exposed to light.
2. Pharmaceuticals: In the pharmaceutical industry, amber bottles are used to store light-sensitive drugs, active pharmaceutical ingredients (APIs), and formulations. This helps maintain the potency and stability of the medications.
3. Biological Samples: Amber bottles are utilized to store light-sensitive biological samples, such as DNA, RNA, enzymes, proteins, and other biomolecules, which can be vulnerable to degradation by light exposure.
4. Essential Oils and Fragrances: In the cosmetic and perfumery industries, amber bottles are commonly used to store essential oils and fragrances, which can lose their potency and aroma when exposed to light.
5. Photographic Chemicals: In photographic darkrooms, amber bottles are used to store light-sensitive photographic chemicals and solutions to prevent their degradation and maintain their effectiveness.
6. Food and Beverage Industry: Amber bottles are used to package light-sensitive food and beverage products, such as certain oils, herbal extracts, and craft beers.
7. Environmental Samples: In environmental testing and research, amber bottles are used to collect and store light-sensitive water and soil samples, preserving their chemical composition for analysis.
8. Analytical Standards: Laboratory glass amber bottles are also employed to store analytical standards and reference materials, ensuring their accuracy and stability over time.
9. Research and Development: In various research settings, amber bottles play a vital role in preserving the integrity of light-sensitive substances during experiments and investigations.
10. Chemical Reactions: During chemical reactions that are sensitive to light, amber bottles are used as reaction vessels or storage containers to protect the reactants or products.

These are just a few examples of the major and common uses of laboratory glass amber bottles. Their widespread application across different industries and scientific fields demonstrates their importance in maintaining the quality and stability of light-sensitive substances.