Nittobo America Inc., is a primary manufacturer and supplier of bulk immunodiagnostic raw materials to in-vitro diagnostic, biotechnology and veterinary diagnostic test kit manufacturers based in Europe, Asia, and the Americas.

Product lines include: goat polyclonal antisera for turbidimetric and nephelometric serum protein assays; standard and custom calibrators and controls; OEM reagents manufactured to customer specifications; and an extensive range of monoclonal and polyclonal antibodies and antigens used in immunochemistry and infectious disease testing.

Capricorn Products LLC was established in 1994. In 2019, Capricorn Products LLC was acquired by Nittobo America Inc., a global leader of IVD raw materials. This acquisition added to a 3rd brand, Capricorn Products, to its well-recognized IIC and MBC brands.

Nittobo America Inc. laboratory is situated in Portland, Maine, with its ten-acre USDA-registered farm facility located in a nearby rural agricultural community. Nittobo America Inc. also owns labs and farms in California and Iowa.