The two most common types of LPG are propane (C3H8) and butane (C4H10) but Calor has developed a third, 100% renewable version of LPG called BioLPG.Available exclusively from Calor, BioLPG is made from a blend of waste, residues and sustainably-sourced vegetable oils. BioLPG is identical in appearance and performance to conventional LPG. It is used for the same applications and equipment and transported and stored in the same tanks. There’s just one important difference – how it’s produced. Find out more about BioLPG> Available exclusively from Calor, BioLPG is made from a blend of waste, residues and sustainably-sourced vegetable oils. BioLPG is identical in appearance and performance to conventional LPG. It is used for the same applications and equipment and transported and stored in the same tanks. There’s just one important difference – how it’s produced. Find out more about BioLPG.