ASTM D5495-03(2011)

Standard Practice for Sampling With a Composite Liquid Waste Sampler (COLIWASA)

SIGNIFICANCE AND USE
This practice is applicable to sampling liquid wastes and other stratified liquids. The COLIWASA is used to obtain a vertical column of liquid representing an accurate cross-section of the sampled material. To obtain a representative sample of stratified liquids, the COLIWASA should be open at both ends so that material flows through it as it is slowly lowered to the desired sampling depth. The COLIWASA must not be lowered with the stopper in place. Opening the stopper after the tube is submerged will cause material to flow in from the bottom layer only, resulting in gross over-representation of that layer.
This practice is to be used by personnel acquiring samples.
This practice should be used in conjunction with Guide D4687 which covers sampling plans, safety, QA, preservation, decontamination, labeling and chain-of-custody procedures; Practice D5088 which covers decontamination of field equipment used at waste sites; Practice D5283 which covers project specifications and practices for environmental field operations, and Practice D5743 which covers drum sampling..
SCOPE
1.1 This practice describes the procedure for sampling liquids with the composite liquid waste sampler, or “COLIWASA.” The COLIWASA is an appropriate device for obtaining a representative sample from stratified or unstratified liquids. Its most common use is for sampling containerized liquids, such as tanks, barrels, and drums. It may also be used for pools and other open bodies of stagnant liquid.
Note 1—A limitation of the COLIWASA is that the stopper mechanism may not allow collection of approximately the bottom inch of material, depending on construction of the stopper.  
1.2 The COLIWASA should not be used to sample flowing or moving liquids.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety problems, 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.

General Information

• Status: Historical
• Publication Date: 30-Jun-2011
• ICS: 13.030.20 - Liquid wastes. Sludge
• Technical Committee: D34 - Waste Management
• Drafting Committee: D34.01.03 - Sampling Equipment

Relations

• Replaces: ASTM D5495-03(2007) - Standard Practice for Sampling With a Composite Liquid Waste Sampler (COLIWASA)
• Effective Date: 01-Jul-2011
• Referred By: ASTM D5743-21 - Standard Practice for Sampling Single or Multilayered Liquids, with or Without Solids, in Drums or Similar Containers
• Effective Date: 01-Jul-2011
• Referred By: ASTM D6063-11(2018) - Standard Guide for Sampling of Drums and Similar Containers by Field Personnel
• Effective Date: 01-Jul-2011
• Referred By: ASTM D7831-20 - Standard Practice for Sampling of Tanks by Field Personnel
• Effective Date: 01-Jul-2011
• Referred By: ASTM D6232-21 - Standard Guide for Selection of Sampling Equipment for Waste and Contaminated Media Data Collection Activities
• Effective Date: 01-Jul-2011
• Referred By: ASTM D8008-20 - Standard Practice for Representative Field Sampling of Traffic Paints
• Effective Date: 01-Jul-2011

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: D5495 − 03(Reapproved 2011)
Standard Practice for
Sampling With a Composite Liquid Waste Sampler
1
(COLIWASA)
This standard is issued under the fixed designation D5495; 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 and Quality Control Planning and Implementation
D5743 Practice for Sampling Single or Multilayered
1.1 This practice describes the procedure for sampling
Liquids, With or Without Solids, in Drums or Similar
liquids with the composite liquid waste sampler, or “COLI-
Containers
WASA.” The COLIWASAis an appropriate device for obtain-
D6232 Guide for Selection of Sampling Equipment for
ing a representative sample from stratified or unstratified
WasteandContaminatedMediaDataCollectionActivities
liquids. Its most common use is for sampling containerized
liquids, such as tanks, barrels, and drums. It may also be used
3. Summary of Practice
for pools and other open bodies of stagnant liquid.
3.1 A clean device is slowly lowered into the liquid to be
NOTE 1—Alimitation of the COLIWASAis that the stopper mechanism
sampled.After it has filled, the bottom of the sampling tube is
may not allow collection of approximately the bottom inch of material,
closed and the device is retrieved. The contents are subse-
depending on construction of the stopper.
quently discharged into a sample container.
1.2 The COLIWASA should not be used to sample flowing
or moving liquids. 4. Significance and Use
1.3 The values stated in SI units are to be regarded as 4.1 Thispracticeisapplicabletosamplingliquidwastesand
standard. No other units of measurement are included in this other stratified liquids. The COLIWASA is used to obtain a
standard. verticalcolumnofliquidrepresentinganaccuratecross-section
of the sampled material. To obtain a representative sample of
1.4 This standard does not purport to address all of the
stratified liquids, the COLIWASAshould be open at both ends
safety problems, if any, associated with its use. It is the
so that material flows through it as it is slowly lowered to the
responsibility of the user of this standard to establish appro-
desired sampling depth. The COLIWASAmust not be lowered
priate safety and health practices and determine the applica-
with the stopper in place. Opening the stopper after the tube is
bility of regulatory limitations prior to use.
submerged will cause material to flow in from the bottom layer
2. Referenced Documents
only, resulting in gross over-representation of that layer.
2
2.1 ASTM Standards:
4.2 This practice is to be used by personnel acquiring
D4687 Guide for General Planning of Waste Sampling
samples.
D5088 Practice for Decontamination of Field Equipment
4.3 This practice should be used in conjunction with Guide
Used at Waste Sites
D4687 which covers sampling plans, safety, QA, preservation,
D5283 Practice for Generation of Environmental Data Re-
decontamination, labeling and chain-of-custody procedures;
lated to Waste ManagementActivities: QualityAssurance
Practice D5088 which covers decontamination of field equip-
ment used at waste sites; Practice D5283 which covers project
1
This practice is under the jurisdiction of ASTM Committee D34 on Waste specifications and practices for environmental field operations,
Management and is the direct responsibility of Subcommittee D34.01.03 on
and Practice D5743 which covers drum sampling.
Sampling Equipment.
Current edition approved July 1, 2011. Published September 2011. Originally
5. Sampling Equipment
approved in 1994. Last previous edition approved in 2007 as D5495-03 (2007).
DOI: 10.1520/D5495-03R11.
5.1 COLIWASAs are available commercially with different
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
types of stoppers and locking mechanisms, but they all operate
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
using the same principle. They can also be constructed from
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. materials such as polyvinylchloride (PVC), glass, metal, or
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5495 − 03 (2011)
polytetrafluoroethylene (PTFE). A traditional model of the 7.2 Open the COLIWASA by placing the stopper mecha-
3,4
COLIWASAis shown in Fig. 1 [deVera et al.] ; however, the nism in the open position.
design can be modified or adapted, or both, to meet the needs
7.3 Lower the COLIWASAinto the liquid slowly so that the
of the sampler. COLIW
...

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: D5495 − 03 (Reapproved 2011) D5495 − 03 (Reapproved 2011)
Standard Practice for
Sampling With a Composite Liquid Waste Sampler
1
(COLIWASA)
This standard is issued under the fixed designation D5495; 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 practice describes the procedure for sampling liquids with the composite liquid waste sampler, or “COLIWASA.” The
COLIWASA is an appropriate device for obtaining a representative sample from stratified or unstratified liquids. Its most common
use is for sampling containerized liquids, such as tanks, barrels, and drums. It may also be used for pools and other open bodies
of stagnant liquid.
NOTE 1—A limitation of the COLIWASA is that the stopper mechanism may not allow collection of approximately the bottom inch of material,
depending on construction of the stopper.
1.2 The COLIWASA should not be used to sample flowing or moving liquids.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety problems, 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D4687 Guide for General Planning of Waste Sampling
D5088 Practice for Decontamination of Field Equipment Used at Waste Sites
D5283 Practice for Generation of Environmental Data Related to Waste Management Activities: Quality Assurance and Quality
Control Planning and Implementation
D5743 Practice for Sampling Single or Multilayered Liquids, With or Without Solids, in Drums or Similar Containers
D6232 Guide for Selection of Sampling Equipment for Waste and Contaminated Media Data Collection Activities
3. Summary of Practice
3.1 A clean device is slowly lowered into the liquid to be sampled. After it has filled, the bottom of the sampling tube is closed
and the device is retrieved. The contents are subsequently discharged into a sample container.
4. Significance and Use
4.1 This practice is applicable to sampling liquid wastes and other stratified liquids. The COLIWASA is used to obtain a vertical
column of liquid representing an accurate cross-section of the sampled material. To obtain a representative sample of stratified
liquids, the COLIWASA should be open at both ends so that material flows through it as it is slowly lowered to the desired
sampling depth. The COLIWASA must not be lowered with the stopper in place. Opening the stopper after the tube is submerged
will cause material to flow in from the bottom layer only, resulting in gross over-representation of that layer.
4.2 This practice is to be used by personnel acquiring samples.
4.3 This practice should be used in conjunction with Guide D4687 which covers sampling plans, safety, QA, preservation,
decontamination, labeling and chain-of-custody procedures; Practice D5088 which covers decontamination of field equipment
1
This practice is under the jurisdiction of ASTM Committee D34 on Waste Management and is the direct responsibility of Subcommittee D34.01.03 on Sampling
Equipment.
Current edition approved July 1, 2011. Published September 2011. Originally approved in 1994. Last previous edition approved in 2007 as D5495-03 (2007). DOI:
10.1520/D5495-03R11.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5495 − 03 (2011)
used at waste sites; Practice D5283 which covers project specifications and practices for environmental field operations, and
Practice D5743 which covers drum sampling.
5. Sampling Equipment
5.1 COLIWASAs are available commercially with different types of stoppers and locking mechanisms, but they all operate
using the same principle. They can also be constructed from materials such as polyvinylchloride (PVC), glass, metal, or
3,4
polytetrafl
...