Solar thermal installers and users can now purchase SPP Corn Glycol in 55 gallon drums.
SPP Corn Glycol, a propylene glycol developed specifically for solar thermal applications and made in the USA 100% from corn, is now available in 55 gallon drums. The SPP Corn Glycol has superior freeze protection and heat transfer properties for solar water heating systems and is priced similarly to normal glycol. SPP Corn Glycol has been used in 100's of commercial, government and residential installation since 2007. The newly available 55 gallon size is designed to be more convenient and cost effective for solar installation companies.