To ensure that products do not contain excessive amounts of aluminum, implement a strict quality control process. This includes sourcing raw materials from suppliers who adhere to strict aluminum content limits, conducting regular testing of products using advanced analytical techniques such as Inductively Coupled Plasma Mass Spectrometry (ICP-MS) or Atomic Absorption Spectroscopy (AAS). Establishing and following Good Manufacturing Practices (GMP) is crucial, along with continuous monitoring and improvement of production processes. Additionally, staying updated with regulatory guidelines and setting internal limits that are below the legal maximum levels can help maintain safety and compliance.