ASTM E1235-12(2020)

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, health, and environmental 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.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-Mar-2020
• 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 E1235-12 - Standard Test Method for Gravimetric Determination of Nonvolatile Residue (NVR) in Environmentally Controlled Areas for Spacecraft
• Effective Date: 01-Apr-2020
• Replaced By: ASTM E1235-12(2020)e1 - Standard Test Method for Gravimetric Determination of Nonvolatile Residue (NVR) in Environmentally Controlled Areas for Spacecraft
• Effective Date: 01-Apr-2020
• Referred By: ASTM E1548-09(2022) - Standard Practice for Preparation of Aerospace Contamination Control Plans
• Effective Date: 01-Apr-2020
• Referred By: ASTM E2352-19 - Standard Practice for Aerospace Cleanrooms and Associated Controlled Environments—Cleanroom Operations
• Effective Date: 01-Apr-2020
• Referred By: ASTM E2217-12(2019) - Standard Practice for Design and Construction of Aerospace Cleanrooms and Contamination Controlled Areas
• Effective Date: 01-Apr-2020
• Referred By: ASTM G121-18 - Standard Practice for Preparation of Contaminated Test Coupons for the Evaluation of Cleaning Agents
• Effective Date: 01-Apr-2020
• Referred By: ASTM G120-15(2023) - Standard Practice for Determination of Soluble Residual Contamination by Soxhlet Extraction
• Effective Date: 01-Apr-2020
• Referred By: ASTM E2312-11(2019) - Standard Practice for Tests of Cleanroom Materials
• 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-Apr-2020
• Referred By: ASTM E2042/E2042M-09(2021) - Standard Practice for Cleaning and Maintaining Controlled Areas and Clean Rooms
• Effective Date: 01-Apr-2020
• 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-Apr-2020
• Referred By: ASTM G131-96(2023)e1 - Standard Practice for Cleaning of Materials and Components by Ultrasonic Techniques
• Effective Date: 01-Apr-2020
• Referred By: ASTM E2900-19 - Standard Practice for Spacecraft Hardware Thermal Vacuum Bakeout
• Effective Date: 01-Apr-2020

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 (Reapproved 2020)
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 Rooms Using Instruments Capable of Detecting Single
Sub-Micrometre and Larger Particles
1.1 Thistestmethodcoversthedeterminationofnonvolatile
3
residue(NVR)falloutinenvironmentallycontrolledareasused 2.2 ISO Standards:
for the assembly, testing, and processing of spacecraft. 14644-1 Cleanrooms and Associated Controlled
Environments—Part 1: Classification of Air Cleanliness
1.2 The NVR of interest is that which is deposited on
14644-2 Cleanrooms and Associated Controlled
sampling plate surfaces at room temperature: it is left to the
Environments—Part 2: Specifications for Testing and
user to infer the relationship between the NVR found on the
Monitoring to Prove Continued Compliance with ISO
sampling plate surface and that found on any other surfaces.
14644-1
1.3 This standard does not purport to address all of the
14951-3 Space Systems—Fluid Characteristics—Part 3: Ni-
safety concerns, if any, associated with its use. It is the
trogen
responsibility of the user of this standard to establish appro-
4
2.3 U.S. Federal Standard:
priate safety, health, and environmental practices and deter-
FED-STD-209E Airborne Particulate Cleanliness Classes in
mine the applicability of regulatory limitations prior to use.
Cleanrooms and Clean Zones
1.4 The values stated in SI units are to be regarded as
5
standard. No other units of measurement are included in this 2.4 Institute of Environmental Sciences and Technology:
standard.
IEST-RP-CC001.3 HEPA and ULPA Filters
IEST-RP-CC007.1 Testing ULPA Filters
1.5 This international standard was developed in accor-
IEST-RP-CC034.1 HEPA and ULPA Filter Leak Tests
dance with internationally recognized principles on standard-
IEST-STD-CC1246 Product Cleanliness Levels and Con-
ization established in the Decision on Principles for the
tamination Control Program
Development of International Standards, Guides and Recom-
3
mendations issued by the World Trade Organization Technical
2.5 American National Standards Institute:
Barriers to Trade (TBT) Committee.
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-
borne Particles in Dust-Controlled Areas and Clean
3. Terminology
3.1 Definitions:
1
This test method is under the jurisdiction of ASTM Committee E21 on Space
Simulation andApplications of Space Technology and is the direct responsibility of
3
Subcommittee E21.05 on Contamination. Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Current edition approved April 1, 2020. Published April 2020. Originally 4th Floor, New York, NY 10036, http://www.ansi.org.
4
approved in 1988. Last previous edition approved in 2012 as E1235 – 12. DOI: Available from Standardization Documents Order Desk, Bldg. 4, Section D,
10.1520/E1235-12R20. 700 Robbins Ave., Philadelphia, PA, 19111-5094, Attn.: NPODS.
2 5
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Institute of Environmental Sciences, 940 E. Northwest
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Highway, Mount Prospect, IL 60056.
6
Standards volume information, refer to the standard’s Document Summary page on Available from Committee on Industrial Ventilation, PO Box 16153, Lansing,
the ASTM website. MI 48901.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1235 − 12 (2020)
3.1.1 ISO Class N (airborne particulate cleanliness class), 3.1.11 good housekeeping area, n—anenvironmentallycon-
n—level of airborne particulate concentrations as defined in trolled area without quantitative cleanliness requirements but
N
ISO 14644-1 and 14644-2, where 10 is the maximum maintained in a visibly clean condition.
3
allowable concentration
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1235 − 12 E1235 − 12 (Reapproved 2020)
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 safety, health, and healthenvironmental 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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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 B46.1-2009 Surface Texture (Surface Roughness, Waviness, and Lay)
1
This test method is under the jurisdiction of ASTM Committee E21 on Space Simulation and Applications of Space Technology and is the direct responsibility of
Subcommittee E21.05 on Contamination.
Current edition approved Nov. 1, 2012April 1, 2020. Published November 2012April 2020. Originally approved in 1988. Last previous edition approved in 20082012 as
E1235 – 08.E1235 – 12. DOI: 10.1520/E1235-12.10.1520/E1235-12R20.
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Available from 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1235 − 12 (2020)
2.6 Other:
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
3. Terminology
3.1 Definitions:
3.1.1 ISO Class N (airborne particulate cleanliness class), n—level of airborne parti
...