PureTerra Ventures

Swan Systems is a software company that specializes in providing a cloud-based platform for precision irrigation and nutrient management in agriculture. The platform integrates data from various sources to create tailored irrigation and nutrient plans aimed at optimizing crop yields, minimizing waste, and reducing costs. Swan Systems offers real-time monitoring and analytics, empowering growers to make informed decisions regarding their irrigation and fertilization practices. By delivering a sophisticated yet user-friendly management tool, Swan Systems supports large-scale irrigators in effectively scheduling water and nutrient applications across a variety of agricultural operations, including field crops, horticultural crops, and turf. The company's overarching goal is to enhance farmers’ profitability while promoting sustainable agricultural practices.

Founded in 2016, Membrion specializes in manufacturing and commercializing advanced membrane filtration technologies. Its products are designed to filter molecules under diverse conditions, serving applications such as flow batteries, water purification, fuel cells, and pharmaceuticals.

Swan Systems is a software company that specializes in providing a cloud-based platform for precision irrigation and nutrient management in agriculture. The platform integrates data from various sources to create tailored irrigation and nutrient plans aimed at optimizing crop yields, minimizing waste, and reducing costs. Swan Systems offers real-time monitoring and analytics, empowering growers to make informed decisions regarding their irrigation and fertilization practices. By delivering a sophisticated yet user-friendly management tool, Swan Systems supports large-scale irrigators in effectively scheduling water and nutrient applications across a variety of agricultural operations, including field crops, horticultural crops, and turf. The company's overarching goal is to enhance farmers’ profitability while promoting sustainable agricultural practices.

Cerahelix designs and manufactures ceramic membrane filters for water purification, resource recovery, and related filtration applications. It offers ceramic microfiltration membranes and housings, including single-channel elements for lab-scale studies and multi-channel elements for commercial-scale projects, as well as filter element housings and laboratory test systems that are sold or leased. Its bio-derived membranes utilize a patented DNA-template technology to form sub-nanometer pores in ceramic material, enabling molecular-level separation of salts, metal ions, and other impurities. The company serves industries such as food and beverage, mining, produced water, fine chemicals, bio-based products, pharmaceuticals, renewables, and waste-to-energy. Founded in 2011, Cerahelix is based in Orono, Maine.