What the main difference between :

$1-$ Flash point and fire point vapor value production and continued fiering

$2.$ SpGr and API gravity. Wide range and non$-$liner

$3-$ Overflash and pre$-$flash Overflash rising the putty and pre$-$flash rising the capacity and decrease the heat Load on heater

$4.$ Gap and overlap. positive and negative value of

$5-K_w$ and $Cl{K}_w$ increase and $Cl$ decrease with Tb

$6-$ the ASTM D$86$ method and the ASTM D$1160$ method TBp and theoretical plate