ASTM E1235-12

Standard Test Method for Gravimetric Determination of Nonvolatile Residue (NVR) in Environmentally Controlled Areas for Spacecraft

SIGNIFICANCE AND USE
5.1 The NVR determined by this test method is that amount that can reasonably be expected to exist on hardware exposed in environmentally controlled areas.  
5.2 The evaporation of the solvent at or near room temperature is to quantify the NVR that exists at room temperature.  
5.3 Numerous other methods are being used to determine NVR. This test method is not intended to replace methods used for other applications.
SCOPE
1.1 This test method covers the determination of nonvolatile residue (NVR) fallout in environmentally controlled areas used for the assembly, testing, and processing of spacecraft.  
1.2 The NVR of interest is that which is deposited on sampling plate surfaces at room temperature: it is left to the user to infer the relationship between the NVR found on the sampling plate surface and that found on any other surfaces.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

General Information

• Status: Historical
• Publication Date: 31-Oct-2012
• ICS: 49.025.01 - Materials for aerospace construction in general
• ICS: 49.140 - Space systems and operations
• Technical Committee: E21 - Space Simulation and Applications of Space Technology
• Drafting Committee: E21.05 - Contamination

Relations

• Replaces: ASTM E1235-08 - Standard Test Method for Gravimetric Determination of Nonvolatile Residue (NVR) in Environmentally Controlled Areas for Spacecraft
• Effective Date: 01-Nov-2012
• Replaced By: ASTM E1235-12(2020) - Standard Test Method for Gravimetric Determination of Nonvolatile Residue (NVR) in Environmentally Controlled Areas for Spacecraft
• Effective Date: 01-Apr-2020
• Referred By: ASTM G136-03(2023)e1 - Standard Practice for Determination of Soluble Residual Contaminants in Materials by Ultrasonic Extraction
• Effective Date: 01-Nov-2012
• Referred By: ASTM E2042/E2042M-09(2021) - Standard Practice for Cleaning and Maintaining Controlled Areas and Clean Rooms
• Effective Date: 01-Nov-2012
• Referred By: ASTM G121-18 - Standard Practice for Preparation of Contaminated Test Coupons for the Evaluation of Cleaning Agents
• Effective Date: 01-Nov-2012
• Referred By: ASTM E2312-11(2019) - Standard Practice for Tests of Cleanroom Materials
• Effective Date: 01-Nov-2012
• Referred By: ASTM E2217-12(2019) - Standard Practice for Design and Construction of Aerospace Cleanrooms and Contamination Controlled Areas
• Effective Date: 01-Nov-2012
• Referred By: ASTM E1234-12(2020) - Standard Practice for Handling, Transporting, and Installing Nonvolatile Residue (NVR) Sample Plates Used in Environmentally Controlled Areas for Spacecraft
• Effective Date: 01-Nov-2012
• Referred By: ASTM E2900-19 - Standard Practice for Spacecraft Hardware Thermal Vacuum Bakeout
• Effective Date: 01-Nov-2012
• Referred By: ASTM G120-15(2023) - Standard Practice for Determination of Soluble Residual Contamination by Soxhlet Extraction
• Effective Date: 01-Nov-2012
• Referred By: ASTM E1548-09(2022) - Standard Practice for Preparation of Aerospace Contamination Control Plans
• Effective Date: 01-Nov-2012
• Referred By: ASTM E2352-19 - Standard Practice for Aerospace Cleanrooms and Associated Controlled Environments—Cleanroom Operations
• Effective Date: 01-Nov-2012
• Referred By: ASTM G131-96(2023)e1 - Standard Practice for Cleaning of Materials and Components by Ultrasonic Techniques
• Effective Date: 01-Nov-2012

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1235 − 12
Standard Test Method for
Gravimetric Determination of Nonvolatile Residue (NVR) in
1
Environmentally Controlled Areas for Spacecraft
This standard is issued under the fixed designation E1235; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 14644-2 Cleanrooms and Associated Controlled
Environments—Part 2: Specifications for Testing and
1.1 Thistestmethodcoversthedeterminationofnonvolatile
Monitoring to Prove Continued Compliance with ISO
residue(NVR)falloutinenvironmentallycontrolledareasused
14644-1
for the assembly, testing, and processing of spacecraft.
14951-3 Space Systems—Fluid Characteristics—Part 3: Ni-
1.2 The NVR of interest is that which is deposited on
trogen
sampling plate surfaces at room temperature: it is left to the
4
2.3 U.S. Federal Standard:
user to infer the relationship between the NVR found on the
FED-STD-209E Airborne Particulate Cleanliness Classes in
sampling plate surface and that found on any other surfaces.
Cleanrooms and Clean Zones
5
1.3 This standard does not purport to address all of the
2.4 Institute of Environmental Sciences and Technology:
safety concerns, if any, associated with its use. It is the
IEST-RP-CC001.3 HEPA and ULPA Filters
responsibility of the user of this standard to establish appro-
IEST-RP-CC007.1 Testing ULPA Filters
priate safety and health practices and determine the applica-
IEST-RP-CC034.1 HEPA and ULPA Filter Leak Tests
bility of regulatory limitations prior to use.
IEST-STD-CC1246 Product Cleanliness Levels and Con-
1.4 The values stated in SI units are to be regarded as
tamination Control Program
3
standard. No other units of measurement are included in this
2.5 American National Standards Institute:
standard.
ANSI/ASME B46.1-2009 Surface Texture (Surface
Roughness, Waviness, and Lay)
2. Referenced Documents
2.6 Other:
2
2.1 ASTM Standards:
Industrial Ventilation, A Manual of Recommended Practice,
6
D1193 Specification for Reagent Water
Latest Edition
E1234 Practice for Handling, Transporting, and Installing
SMC-TR-95-28, Nonvolatile Residue Solvent Replacement,
Nonvolatile Residue (NVR) Sample Plates Used in Envi-
U.S. Air Force Space and Missile Systems Center, 1
4
ronmentally Controlled Areas for Spacecraft
March 1995
F50 Practice for Continuous Sizing and Counting of Air-
3. Terminology
borne Particles in Dust-Controlled Areas and Clean
Rooms Using Instruments Capable of Detecting Single
3.1 Definitions:
Sub-Micrometre and Larger Particles
3.1.1 ISO Class N (airborne particulate cleanliness class),
3
2.2 ISO Standards: n—level of airborne particulate concentrations as defined in
N
14644-1 Cleanrooms and Associated Controlled
ISO 14644-1 and 14644-2, where 10 is the maximum
3
Environments—Part 1: Classification of Air Cleanliness allowable concentration (particles/m ).
3.1.1.1 Discussion—The considered particle sizes (lower
threshold values) applicable for classification with ISO
1
This test method is under the jurisdiction of ASTM Committee E21 on Space
14644-1 are limited to the range from 0.1 through 5 µm.
Simulation and Applications of Space Technology and is the responsibility of
Particleslargerthan5µm(macroparticles)maybeexpressedin
Subcommittee E21.05 on Contamination.
accordance with Annex E of ISO 14644-1.
Current edition approved Nov. 1, 2012. Published November 2012. Originally
approved in 1988. Last previous edition approved in 2008 as E1235 – 08. DOI:
10.1520/E1235-12.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Standardization Documents Order Desk, Bldg. 4, Section D,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM 700 Robbins Ave., Philadelphia, PA, 19111-5094, Attn.: NPODS.
5
Standards volume information, refer to the standard’s Document Summary page on Available from Institute of Environmental Sciences, 940 E. Northwest
the ASTM website. Highway, Mount Prospect, IL 60056.
3 6
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., Available from Committee on Industrial Ventilation, PO Box 16153, Lansing,
4th Floor, New York, NY 10036, http://www.ansi.org. MI 48901.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1235 − 12
3.1.2 FS209 class, n—the level of cleanliness specified by shall meet the requirements of IEST-RP-CC001.3, IEST-RP-
3
the maximum allowable number of particles/ft of air as CC007.1, IEST-RP-CC034.1, and 6.4 of this test method.
defined in FED-STD-209E.
3.1.13
...

Designation: E1235 − 08 E1235 − 12
Standard Test Method for
Gravimetric Determination of Nonvolatile Residue (NVR) in
1
Environmentally Controlled Areas for Spacecraft
This standard is issued under the fixed designation E1235; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the determination of nonvolatile residue (NVR) fallout in environmentally controlled areas used for
the assembly, testing, and processing of spacecraft.
1.2 The NVR of interest is that which is deposited on sampling plate surfaces at room temperature: it is left to the user to infer
the relationship between the NVR found on the sampling plate surface and that found on any other surfaces.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
E1234 Practice for Handling, Transporting, and Installing Nonvolatile Residue (NVR) Sample Plates Used in Environmentally
Controlled Areas for Spacecraft
F50 Practice for Continuous Sizing and Counting of Airborne Particles in Dust-Controlled Areas and Clean Rooms Using
Instruments Capable of Detecting Single Sub-Micrometre and Larger Particles
3
2.2 ISO Standards:
14644-1 Cleanrooms and Associated Controlled Environments—Part 1: Classification of Air Cleanliness
14644-2 Cleanrooms and Associated Controlled Environments—Part 2: Specifications for Testing and Monitoring to Prove
Continued Compliance with ISO 14644-1
14951-3 Space Systems—Fluid Characteristics—Part 3: Nitrogen
4
2.3 U.S. Federal Standard:
FED-STD-209E Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones
5
2.4 Institute of Environmental Sciences and Technology:
IEST-RP-CC001.3 HEPA and ULPA Filters
IEST-RP-CC007.1 Testing ULPA Filters
IEST-RP-CC034.1 HEPA and ULPA Filter Leak Tests
IEST-STD-CC1246 Product Cleanliness Levels and Contamination Control Program
3
2.5 American National Standards Institute:
ANSI/ASME B46.1-1985B46.1-2009 Surface Texture (Surface Roughness, Waviness, and Lay)
2.6 Other:
3.1.1.1 Discussion—
6
Industrial Ventilation, A Manual of Recommended Practice, Latest Edition
4
SMC-TR-95-28, Nonvolatile Residue Solvent Replacement, U.S. Air Force Space and Missile Systems Center, 1 March 1995
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3. Terminology
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3.1 Definitions:
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
3.1.1 ISO Class N (airborne particulate cleanliness class), n—level of airborne particulate concentrations as defined in ISO
4th Floor, New York, NY 10036, http://www.ansi.org.
N 3
4
14644-1 and 14644-2, where 10 is the maximum allowable concentrationAvailable(particles/mfrom Standardization). Documents Order Desk, Bldg. 4, Section D,
700 Robbins Ave., Philadelphia, PA, 19111-5094, Attn.: NPODS.
5
Available from Institute of Environmental Sciences, 940 E. Northwest
Highway, Mount Prospect, IL 60056.
6
Available from Committee on Industrial Ventilation, PO Box 16153, Lansing,
MI 48901.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1235 − 12
The considered particle sizes (lower threshold values) applicable for classification with ISO 14644-1 are limited to the range from
0.1 through 5 μm. Particles larger than 5 μm (macroparticles) may be expressed in accordance with Annex E of ISO 14644-1.
3
3.1.2 FS209 class, n—the level of cleanliness specified by the maximum allowable number of particles/ft of air as defined in
FED-STD-209E.
1
This test method is under the jurisdiction of ASTM Committee E21 on Space Simulation and Applications of Space Technology and is the responsibility of Subcommittee
E21.05 on Contamination.
Current edition approved May 1, 2008Nov. 1, 2012. Published June 2008November 2012. Originally approved in 1988. Last previous edition approved in 20012008 as
E1235 – 01.E1235 – 08. DOI: 10.1520/E1235-08.10.1520/E1235-12.
3.1.2.1 Discussion—
This is provided for information and to facilitate the transition to the use of the ISO classification standard (ISO 14644-1).
3.1.3 bumping, n—uneven boiling of a liquid caused b
...