Nalgene 382099 Certified Low Particulate Narrow-Mouth HDPE Bottles with Caps have an average of less than 30 particles per ml at 0.3um and greater. Effectively store high-purity chemicals with these bottles, which are extremely low in trace metal content. Controlled environment manufacturing minimizes particulate contamination. These Low Particulate IP2 Bottles can be used in compliance with the new regulations for customers who are designing, assembling and certifying their own combination packaging. Non-sterile.