§ 305.23 - Steam sterilization treatment schedules.

Related Notices

Latest version.

Treatment scheduleTemperature
( °F)

Pressure

Exposure period (minutes)

Directions

T303-b-110 lbs20Use 28″ vacuum. Steam sterilization is not practical for treatment of bales with a density of greater than 30 pounds per cubic foot.

T303-b-210 lbs20Use 28″ vacuum. If without initial vacuum, bleed air until steam vapor escapes. Steam sterilization is not practical for treatment of bales with a density of greater than 30 pounds per cubic foot.

T303-d-226020 lbs15

25015 lbs20

T309-c24010 psi20Use 25 Prime vacuum.

T406-d140NAP 160Steam at NAP, tarpaulin or tent. For treatment enclosures of 4,000 ft 3 or less, the minimum air temperature must be 40 °F. For treatment enclosures greater than 4,000 ft 3 and less than or equal to 6,000 ft 3, the minimum air temperature must be 60 °F. Treatment is not recommended for treatment enclosures greater than 6,000 ft 3.

T408-b25015 psi30Preheat laboratory autoclaves. Restrict soil depth to 2 inches when treating quantities of soil in trays. Restrict each package weight to 5 pounds or less when treating individual packages. Load with adequate spacing. Large commercial steam facilities that operate at pressures up to 60 pounds psi will permit treatment of greater soil depth.

T503-1-3 or T503-2-3 (nonbaled)240NAP10

T503-1-3 or T503-2-3 (baled)24010 lbs20

T504-1-2, T504-2-224210 lbs20

T506-2-3 Loose masses of material20 lbs

15 lbs

10 lbs

Introduce live steam into a closed chamber containing the material to be treated until the required temperature and pressure are indicated. The temperature/pressure relationship must be maintained at or above this point for the required exposure period. No initial vacuum is needed, but air must be released until steam escapes.

T506-2-3 Closely packed material (such as soil)Exhaust the air in the chamber to a high vacuum, and then introduce live steam until the required positive pressure is reached.

T510-1212Live steam from jet of nozzle into loose masses of material until all parts reach 212 °F.

T518-2-226020 lbs15

25015 lbs20

T519-110 lbs20Introduce steam into 28″ vacuum.

T519-2259

240

20 lbs

10 lbs

Introduce steam into 28″ vacuum (or if without initial vacuum, “bleed” air until steam vapor escapes).

1 Normal atmospheric pressure.

                    
                        var val = document.getElementById('citecontent').innerHTML;
                        art.dialog.defaults.title = window.location.href;
                        art.dialog.data('cite', val);
                        art.dialog.data('homeDemoPath', '/Scripts/plus/artDialog/');
                        art.dialog.open('/Scripts/plus/artDialog/citeiframe.html');