Tenders for Supply of Silver Soldering Flux In White Powder Form Having Ph Value 07-09 Active At And Above 550 Degree Celsius Till 850 Degree Celsius.Moisture Present Should Be Less Than 03 Precent.Having No Chlorine Containing Potassium Salts After Melting.It Should Give Clear And Viscous Liquid.Its Resiudal Should Be Easily Removable With Water To Pl No.76210753