Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is

$7$ kgf$/$cm$2$ and $70$ C

$1000$ kgf$/$cm$2$ and $100$C

$7$ kgf$/$cm$2$ and $700$C

$1$ kgf$/$cm$2($gage$)$ and $70$C