When purchasing Lithium Bromide, the purity level is the most critical factor, typically required at 99% or higher for industrial applications. For use in absorption chillers, it is usually supplied as a 50%-55% liquid solution. You must verify the inhibitor content (such as Lithium Chromate or Lithium Molybdate), which is essential to prevent corrosion within HVAC systems. Additionally, check the pH value (ideally between 9.0 and 10.5) and the concentration of impurities like chlorides and sulfates, as high levels can significantly reduce equipment lifespan.