No special equipment of measuring is required. You can pretty much eyeball the whole process.
Note: This is a bit smelly and can irritate the eyes and skin.
This process is not sufficient to produce "hot ice". Too many contaminants. If you want to get a purified form for use in "hot ice" experiments, there's an Instructable by indigoandblack that should help. It's more involved but much more likely to get the results you want.
Standard Disclaimer: Not liable for damages due to use or misuse. No warranties expressed or implied. For educational purposes only. Safety goggles may be required during use. Void where prohibited. Your mileage may vary. Unauthorized personnel only. Ceci n'est pas une pipe.
Step 1: Materials
- sodium bicarbonate (baking soda)
- acetic acid (vinegar)
- microwavable glass or ceramic containers
- coffee filters