Depth filters trap particles throughout the thickness of the filter medium instead of on its surface. In biologics manufacturing they remove cells and debris from harvested culture fluid (primary clarification) and condition the feed ahead of Protein A capture (secondary clarification). Buyers compare medium grades against the turbidity of their feed, capacity, scale-up within one product series, and single-use formats. Below are the products we track, their makers, and the Japanese subsidiary or distributor that sells each one.
“Where to buy in Japan” shows only sales relationships we have confirmed on the company’s or the distributor’s own website. “Not yet confirmed” means we have not checked yet, not that the product is unavailable in Japan. Product names link to the maker’s own page.