Tender For supply of pour point tube , mercury thermometer_ range (-2 c to+ 300 c) , mercury thermometer_ range (-50 c to+ 5 c) , mercury thermometer_ range (-10 c to+ 110 c) , cod digestion tube with condensor , glass receiver close end 2 ml for dean & stark apparatus , glass receiver close end 5 ml for dean & stark apparatus , glass receiver close end 10 ml for dean & stark apparatus , glass receiver open end 5 ml for dean & stark apparatus , glass receiver open end 10 ml for dean & stark apparatus