1. **Efficient Impurity Removal**: The APPLIED MEMBRANES INC. 100 GPD Reverse Osmosis Membrane is designed to remove up to 99.9% of impurities, including heavy metals and total dissolved solids (TDS). Certified to NSF/ANSI 58, it effectively reduces harmful substances like arsenic, lead, and fluoride.

2. **Universal Compatibility**: With dimensions of 1.8” x 12”, this RO membrane is universally compatible with most reverse osmosis systems, making it a versatile replacement option.

3. **User Experience**: Many users report that the membrane works as advertised, effectively removing salts and smaller impurities. Installation is straightforward, and the product matches the specifications of original membranes.

4. **Durability and Performance**: Some users have noted that the membrane lasts longer than the recommended one-year replacement interval under normal use conditions. It performs well in various water temperatures and pressures.

5. **Potential Issues**: A few users have reported compatibility issues with specific systems like Watts Premier WP models, where the lack of a built-in check valve or brine seal can cause backflow problems.

6. **Overall Satisfaction**: Despite some isolated issues, the majority of users are satisfied with the product's performance and quality, praising its American manufacturing standards.