I did a little research, and it looks like the maximum amount of venom from each sting is 0.3 mg. To collect an ounce, you'd need about 94,500 stings, with every one at maximum volume. That's a lot of work!
Not sure where to get the equipment, but found this list online:
1 pc Impulse Generator (VC-101 or VC-4FK)
1 pc Collector frame (VC-101: 600 cm2 frame; VC-4FK: 1200 cm2 frame)
1 pc Diaphragm
3 m Connecting Wires
1 pc Lure Solution
1 pc Venom Scraper
1 pc Warning Sign
1 pc Owner's Manual