AS 1807.0:2000 pdf free download – Cleanrooms, workstations, safetycabinets and pharmaceutical isolators-Methods of test Part 0: List of methods and apparatus

AS 1807.0:2000 pdf free download – Cleanrooms, workstations, safetycabinets and pharmaceutical isolators-Methods of test Part 0: List of methods and apparatus.
NOTES:
I The term ‘laminar flow’ is used to characterize cleanrooms, workstations, or safety cabinets incorporating laminar airflow, e.g. laminar flow cleanroom’. ‘laminar flow safety cabinet’.
2 The term •non-larninar flow’ is used to characterize cleanrooms or safety cabinets not providing laminar airflow, viz. ‘non-laminar tiow cleanroom’. ‘non-laminar flow safety cabinet’.
4 ANFIOiETER
An electronic, direct reading anemometer with rotating vane head of 100 mm nominal diameter, having an accuracy of ±5 percent in the range from 0.35 ni,s to 1.0 ms shall be used.
Where the anemometer is to be used in a Freestanding mode, a suitable stand shall be used to hold the anemometer in a fixed position without interfering with airflow.
5 ‘IAr%OMETERS
The following types of manometers shall be used:
(a) Inclined-tube, liquid-filled manometer with a range of 0 to 500 Pa, having minor scale divisions of not greater than 10 Pa and an accuracy of at least ±1% full scale deflection.
(b) Inclined-tube, liquid-filled manometer with a range of 0 to 60 Pa, having minor scale divisions of not greater than I Pa and an accuracy of at least ±1% full scale deflection.
(c) Any other manometer with range and accuracy as required in Items 5(a) or 5(b) as applicable.
(d) Manometers for particle counting test methods as specified in Clause 17.9.
6 RESTRICTIVE DEVICE
A device, e.g. loaded filter(s) or plate(s), capable of simulating the specified increase in static filter resistance shall be used.
7 AMMETERS
The following types of ammeters shall be used:
(a) Moving-iron ammeter with ranges such that the measured values shall be not less than one-fifth of full scale. It shall be a Class 0.5 instrument as defined in IEC 60051. Parts I and 2.
(b) Vhen specified, a hand-held clamp meter (tong-tester) with suitable range(s) may be used. The analog meter shall have range(s) such that the measured values are not less than one-fifth of full scale.
17.4 Aerosol monitor and aerosol adaptor
Aerosol monitors, black. 0.8 pm 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 assembl
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 cleanrooms, a vacuum pump capable of drawing 67 kPa (approximately 500 mmHg) while maintaining a flow rate of 10 L/min (0.17 L/s) 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 L’s) and capable of passing approximately 28 Lmin (0.47 Us) airflow at I kPa pressure through a 0.8 pm membrane filter, exterior to the clean test area.
17.7 Flonieter
A calibrated flowmeter with suitable capacity and accuracy to measure the airflow racs
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.