AS 1807.0:2000 pdf – Cleanrooms, workstations, safetycabinets and pharmaceutical isolators-Methods of test Part 0: List of methods and apparatus.
17.3 Filter holder
An aerosol open-type filter holder having an effective filtration area of approximately 960 mm2 for use with 47 mm diameter filters shall be used.
NOTE: A typical air sampling filtration apparatus using open type filter holder is illustrated in Figure 4. The insertion of the filter is illustrated in Figure 5.
17.4 Aerosol monitor and aerosol adaptor
Aerosol monitors, black. 0.8 jim nominal pore size, gridded on approximately 3.1 mm centres, and aerosol adaptor, with an effective filtration area of approximately 900 mm2 shall be used.
A typical assembly for sampling with aerosol monitors is illustrated in Figure 6.
17.5 Fabric particle monitoring assembly
Open-type filter holder assembly and adaptor for testing cleanroom garments. as illustrated in Figure 8. suitable for use with a 47 mm diameter membrane filter shall be used. The adaptor is required for sampling on permeable fabrics (see Figure 7). For fabrics of low permeability and non-permeable materials, the assembly is used without adaptor.
17.6 Vacuum pump
The following types of vacuum pumps shall be used:
(a) For particle counts in cleanroorns, a vacuum pump capable of drawing 67 kPa (approximately 500 mml-lg) while maintaining a flow rate of 10 Lmin (0.17 Ls) and capable of reducing the ambient air pressure by 67 kPa or more.
(b) For particle counts on cleanroom garments, a vacuum pump capable of drawing 67 kPa while maintaining a flow rate of approximately 28 L.min (0.47 Us) and capable of passing approximately 28 Lmin (0.47 L!s) airflow at I kPa pressure through a 0.8 ).im membrane filter, exterior to the clean test area.
17.7 Flosmeter
A calibrated flowmcter with suitable capacity and accuracy to measure the airflow rates specified in Clause 17.6 shall be used.
17.8 Orifice
As an alternative to the flowmeter (see Clause 17.7) a limiting orifice (see Figures 6 and 8) may be used which is calibrated with the vacuum pump, filter holder, and filter used at the airflow rates specified in Clause 17.6, with the following tolerances:
(a) For particle counts in cleanroom 10±0.5 Llmin (0.17 ±0.01 L/s)
(b) For particle counts on cleanroorn garments 28 ±1.5 L/rnin (0.47 ±0.02 L/s)
Visual examination that the orifice is free of restricting matter shall be made prior to each test.
17.9 Manometer
A manometer with suitable range and accuracy to measure the pressure levels specified in Clause 17.6 shall be used.
NOTE: Manometers for tests other than microscopic particle counting arc specified in Clause 5.
17.10 Timer
An electrical or mechanical timer with suitable range and precision shall be used.
AS 1807.0:2000 pdf – Cleanrooms, workstations, safetycabinets and pharmaceutical isolators-Methods of test Part 0: List of methods and apparatus
