I was randomly researching Tundra, too, and the MSDS I stumbled across listed potassium lactate as the main fire fighting ingredient but no mention of KOH. I thought potassium lactate sounded familiar...looked it up and it is also a common food preservative. Well, anyone who is wondering if it's toxic--they've probably been eating it for a long time already.

Anyway, apparently Tundra is not approved for sale in California, so I guess that I won't be seeing it sold in stores here.

One interesting thing about Tundra is that the solution is kept in a sealed bag inside the can, separate from the propellant. When you press the nozzle down, I guess the tube punctures the bag and pressurizes the solution. I don't believe that the small Fireade2000 extinguisher I just got uses that system.

I would be nervous as heck standing in front of a restaurant-size wok full of flaming oil no matter what kind of extinguisher I had in my hands!