When sourcing Vitamin A Palmitate, you must prioritize the potency (IU/g) and the physical form (Oil, Powder, or Beadlets). Standard concentrations often range from 1.0 million to 1.7 million IU/g. Ensure the product has high stability against oxidation, often achieved through the addition of antioxidants like BHT, BHA, or Vitamin E (Tocopherol). For food or pharma applications, verify the heavy metal limits (Lead <2ppm, Arsenic <1ppm) and microbiological purity to ensure the price reflects a high-grade, safe ingredient.