Equation step 3 – Limitation Avian Steam Breathing Dosage Vm = the volume in liters ( L/mol) occupied by 1 mol of a gas at a temperature of 25C and pressure of 1 atm according to the ideal gas law Formula of Poisoning Endpoints and Ecological Studies Rat acute oral and inhalation toxicity endpoints can be obtained from the “six-pack” of core studies, which are a series of six guideline studies that are submitted to the Registration Division of the Office of Pesticide Programs for formulated and technical grade products of a pesticide.