Founded by research chemist Nat Jonas in 1948, N. Jonas & Company manufactures, packages, and supplies pool and spa care chemicals exclusively for the professional trade. Still family owned and operated, the company has grown from garage production in Philadelphia to three buildings totaling more than 150,000 square feet, with more than 120 employees in peak season. Based in Bensalem, Pennsylvania, Jonas is known for private-label programs that let pool companies sell chemicals under their own brands, backed by in-house chemistry and same-day shipping.