The Bacharach True Spot Smoke Test Kit determines efficient combustion and is internationally recognized as the standardmethod for evaluating smoke density in the flue gases from distillate fuels. Too much smoke is one of the most commoncauses of excessive fuel usage and expensive service requirements. That is precisely why the smoke test is an indispensablepart of any oil burner service job; and with the True Spot, an accurate smoke reading takes less than a minute.The True Spot smoke test method has long been recognized asthe accepted standard for oil burner smoke tests. It is used byUnderwriters’ Laboratories in approval testing of oil burners;and it is the test method specified in the Installation Standards ofthe National Oil Fuel Institute by U.S. Department of Commerce,Testing materials (D2156-65), and German Standard DIN 51-402.*Note: A spare kit containing replacement scale andfilter paper is available; order item # 21-0020.ORDERING INFORMATIONPA R T NO. D E S C R I P T I O N21-7006 True Spot Smoke Test Kit21-7012 Test Pump21-0018 Smoke Scale21-0040 Lubricant21-0019 Filter Paper Sheets (40 strips