This can be used on the Chamber spell to remove it's Maximum Duration Limitation. Assume the chamber is 1 pound per level of Binding. Double weight for each SM of the trapped creature above zero and halve for each below zero. For example, a dragon with SM+4 in a chamber with a Binding level of 40 would have a chamber weighing 640 lbs, requiring casting this spell at level 8 to stabilize it. Keeping a Pixie (SM-6) trapped would require only a level 1 casting for a Binding level of 10, as the chamber weighs less than a pound.

In most cases, it's easier to use Extra Effort to remove the Maximum Duration Limitation when casting Chamber.

Create (Quintessential Ether, Specific Item) 1 [20] 
    Ranged (Gaze) [+40%] 
    Reduced Fatigue Cost 1 [+20%] 
    Based on Activation Roll [+5%] 
    Extended Duration (Permanent) [+300%] 
    Transmutation (Quintessential Ether to Stable Protomatter) [+50%] 
    Transmutation Only [-100%] 
    Magical [-10%] 
    Spell Components [-20%] 
        Must say "stabilize" in Latin 
        Must gesture with hands 
Levels 2-4 [39/58/77] 
    Increase Create by 1 level [+20 base] 
Levels 5+ [+19.25/level] 
    Increase Create by 1 level [+20 base]