likeusfacebook
banner1
GMP Services Inc.

Our commitment is to provide "Peace of Mind" with our quality, price and dependability.

Janitorial and Cleanroom Specialists

Copyright 2011 - GMP Services Incorporated - All Rights Reserved

homebutton
commercialbutton
cleanroombutton
greenbutton
contactusbutton

Airborne Particulate Cleanliness Class Comparison

ISO 14644-1

FEDERAL STANDARD 209E

ISO

ENGLISH

METRIC

ISO 1

ISO 2

ISO 3

1

M1.5

ISO 4

10

M2.5

ISO 5

100

M3.5

ISO 6

1,000

M4.5

ISO 7

10,000

M5.5

ISO 8

100,000

M6.5

ISO 9

Before global clanroom classifications and standards were adopted
by the International Standards Organization (ISO), the U.S. General
Service Administration's standards (known as FS209E) were applied
virtually worldwide. However, as the need for international standards
grew, the ISO established a technical committee and several working
groups to delineate its own set of standards.

FS209E contains six classes, while the ISO 14644-1 classification
system adds two cleaner standards and one dirtier standard (see
chart above). The "Cleanest" cleanroom in FS209E is referred to as
Class 1; the "dirtiest" cleanroom is a class 100,000. ISO cleanroom
classificatons are rated according to how much particulate of specific
sizes exist per cubic meter (see second chart). The "cleanest"
cleanroom is a class 1 and the "dirtiest" a class 9. ISO class 3
isapproximately equal to FS209E class 1, while ISO class 8
approximately equals to FS209E class 100,000.
By law, Federal Standard 209E can be superseded by new
international standards. It is expected that 209E will be used in some
industries over the next five years, but that eventually it will be
replaced internatinally by ISO 14644-2

Screenshot20111015at90349AM
bbb