Supply of Liquefied Petroleum Gas, Type : Commercial Butane- Propane Mixture, Confirming To Is: 4576-1999 Second Revision With Amendment No 1 Of May 2003 Reaffirmed 2009 Edition 3.1 2003- 05 In 19 Kgs Cylinders. Specn: Cylinders. Quantity Tolerance +/-: 5 %Age, Item Category : Normal, Total Po Value Variation Permitt Ed: Max 8 Lacs