Need advice for nn-dmt vape juice

I have pretty much pure n,n-dimethyltryptamine. All white. Ive ordered some .5ml ccell cartridges; they'll be here tomorrow. Ive got 50/50 non nicotine e juice.

Ive been looking for and cant find a thread on how much dmt increases the volume of e-juice. I plan on just making .5 ml of 1g/1ml ratio. Just enough to fill the cartridge.

How much dmt and juice do i need to mix together to get .5ml of dmt juice? Would it be
.25g dmt/ .25ml e-juice? Or do the ratios have to be a little different ? Does 1g of dmt and 1ml of e-juice make 2ml of dmt juice?

Im confident in my proccess and how effective the cartridge will be. The only question i have is how much the dmt will increase the volume of the juice.