1992 Union Pump / APV Gaulin Laboratory Homogenizer. Model: HTD1. Serial number: RZ93471A-1. Capacity: 6gph. Single stage manual valve assembly. Specifically designed for Laboratory or pilot plant use, the HTD1 can achieve fully reproducible results that can be applied to full scale production. It’s small footprint and quiet operating characteristics make it ideal for bench top locations. Applications include: chemical, food, dairy, cosmetic and pharmaceutical industries.(ACN25a).