Abstract: A barbeque with flash fire suppression is disclosed. A cooking surface placed over a heat source is contained underneath a cover having a first opening located over the cooking surface. A bowl having a second opening that is smaller than the first opening is placed upside down on the cover over the first opening, the bowl thereby limiting air flow and retaining heat within the barbeque. Upon detection of an occurrence of a flash fire, or to prevent the occurrence of a flash fire, the bowl is removed from the first opening of the cover, thereby allowing cool air to rush into the barbeque, and allowing heat to escape the barbeque faster, causing a reduction in the temperature at the cooking surface below so as to reduce or stop the flash fire.

Abstract: A method for determining the clearance competency of dialyzers utilized in renal hemodialysis comprises measuring the conductivity of a dialysate solution of low initial conductivity while circulating a priming solution of greater conductivity on the blood side of the dialyzer, correlating the rate of dialysis of molecules contained in the printing solution to known clearance rates for urea or other targeted blood impurity for the types and compositions of the particular dialysis membranes being utilized, and calculating the precise length of treatment time or other treatment parameters required to cleanse the blood to be dialyzed of impurities and biotoxins to a predicted target value. Failsafe control means which prevents mistakes in connecting unsafe fluid sources to the dialyzer is also provided.