ASTM D7353-07
(Practice)Standard Practice for Sampling of Liquids in Waste Management Activities Using a Peristaltic Pump
Standard Practice for Sampling of Liquids in Waste Management Activities Using a Peristaltic Pump
SIGNIFICANCE AND USE
This practice can be used in sampling drums, tanks, and similar containers and in sampling monitoring and waste wells including small diameter (1 in.) wells. The pump can collect samples from multiple depths. The samples can be high-viscosity fluids, aggressive and corrosive fluids, high-purity solutions and abrasive fluids. The pump can be used to mix samples (see D 6063).
Peristaltic pumps use a vacuum to transport the samples. This vacuum may cause some degassing and loss of volatile organic compounds (VOCs) from the sample. When precise quantitative data for VOCs and dissolved gases are not required, peristaltic pumps may be used.
The pump is self-priming, runs dry without damage, and is completely isolated from the pumped fluid. A sample can be taken on the intake or discharge side of the pump.
Some additional advantages of the peristaltic pump are: decontamination of the pump motor is not necessary and the tubing in the pump is disposable and easy to replace. The pumps can be easily started and stopped and can pump fluids at a wide range of pressures and flow rates.
The place, quality and quantity, frequency, and time of sampling is dependent upon the decisions that are to be made (see D 6250), sampling design (see D 6311), the sample, the heterogeneity of the samples (see D 5956), how representative the sample is (see D 6044), and the parameters to be tested as determined by the data quality objectives (DQOs) (see D 5792).
SCOPE
1.1 This practice covers the use of a peristaltic pump for sampling liquids from multiple depths. It is applicable for a wide range of fluids including: high-viscosity fluids, aggressive and corrosive fluids, high-purity solutions and abrasive fluids. It is especially useful for sampling liquids that require complete isolation from the pump.
1.2 This practice includes the determination of sample depth, pump set up and collecting a sample to be analyzed.
1.3 This practice is not intended to give detailed instructions for running a peristaltic pump or recommend which peristaltic pump to purchase. It instructs the field personnel how to connect the pump and collect a sample.
1.4 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.
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Standards Content (Sample)
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Designation: D7353 − 07
StandardPractice for
Sampling of Liquids in Waste Management Activities Using
a Peristaltic Pump
This standard is issued under the fixed designation D7353; 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 D6063 GuideforSamplingofDrumsandSimilarContainers
by Field Personnel
1.1 This practice covers the use of a peristaltic pump for
D6232 Guide for Selection of Sampling Equipment for
sampling liquids from multiple depths. It is applicable for a
WasteandContaminatedMediaDataCollectionActivities
widerangeoffluidsincluding:high-viscosityfluids,aggressive
D6250 Practice for Derivation of Decision Point and Confi-
and corrosive fluids, high-purity solutions and abrasive fluids.
dence Limit for Statistical Testing of Mean Concentration
It is especially useful for sampling liquids that require com-
in Waste Management Decisions
plete isolation from the pump.
D6311 Guide for Generation of Environmental Data Related
1.2 This practice includes the determination of sample
to Waste ManagementActivities: Selection and Optimiza-
depth, pump set up and collecting a sample to be analyzed.
tion of Sampling Design
1.3 Thispracticeisnotintendedtogivedetailedinstructions D6634 Guide for the Selection of Purging and Sampling
Devices for Ground-Water Monitoring Wells
for running a peristaltic pump or recommend which peristaltic
pump to purchase. It instructs the field personnel how to
3. Terminology
connect the pump and collect a sample.
3.1 Definitions:
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.2 See Terminology D5681.
responsibility of the user of this standard to establish appro-
4. Summary of Practice
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
4.1 Aperistaltic pump is a suction lift pump (see Fig. 1b).A
length of polytetrafluoroethylene (PTFE) or other suitable
2. Referenced Documents
tubing such as Silastic tubing is placed in the liquid at any
depth up to 7.6 m (25 ft.) for water or less depending upon the
2.1 ASTM Standards:
density of the sample being taken. The other end is connected
D4448 Guide for Sampling Ground-Water Monitoring Wells
to the piece of flexible tubing which has been threaded around
D4687 Guide for General Planning of Waste Sampling
the rotor of the peristaltic pump (see Fig. 1a). A second piece
D4840 Guide for Sample Chain-of-Custody Procedures
of PTFE or other suitable tubing is connected to the discharge
D5681 Terminology for Waste and Waste Management
endoftheflexibletubingtoallowtheliquidtobecontainerized
D5792 Practice for Generation of Environmental Data Re-
or sampled. One can fill a vacuum-worthy sample container
lated to Waste Management Activities: Development of
after attaching two tubes to it, one from the top of the pump
Data Quality Objectives
inlet, and the other from a lower level to the source (see Fig.
D5956 Guide for Sampling Strategies for Heterogeneous
1c).
Wastes
D6044 Guide for Representative Sampling for Management
5. Significance and Use
of Waste and Contaminated Media
5.1 This practice can be used in sampling drums, tanks, and
similar containers and in sampling monitoring and waste wells
including small diameter (1 in.) wells. The pump can collect
This practice is under the jurisdiction of ASTM Committee D34 on Waste
Management and is the direct responsibility of Subcommittee D34.01.03 on
samples from multiple depths. The samples can be high-
Sampling Equipment.
viscosity fluids, aggressive and corrosive fluids, high-purity
Current edition approved May 1, 2007. Published May 2007. DOI: 10.1520/
solutions and abrasive fluids. The pump can be used to mix
D7353-07.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or samples (see D6063).
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.2 Peristalticpumpsuseavacuumtotransportthesamples.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. This vacuum may cause some degassing and loss of volatile
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7353 − 07
FIG. 1 Peristaltic Pump
organic compounds (VOCs) from the sample. When precise 7.2 Check to make sure that the supply of sample
quantitative data for VOCs and dissolved gases are not containers, labels, ice chest, stop watch or timing device,
required, peristaltic pumps may be used. compositecollectioncontainerifrequired,andsamplingequip-
ment in place are adequate and correct. There should be
5.3 The pump is self-priming, runs dry without damage, and
sampling forms, or log books, or equivalent for recording field
is completely isolated from the pumped fluid.Asample can be
information such as date, time the sample was taken, sampler’s
taken on the intake or discharge side of the pump.
name, physical description of the sampling location and any
5.4 Some additional advantages of the peristaltic pump are:
other information which might impact the validity of the
decontamination of the pump motor is not necessary and the
sample. The log books, sampling forms, and bottle labels
tubing in the pump is disposable and easy to replace. The
should be signed or initialed.
pumps can be easily started and stopped and can pump fluids
7.3 Provision should be made for split samples and field
at a wide range of pressures and flow rates.
quality control samples, such as trip blanks, equipment blanks,
5.5 The place, quality and quantity, frequency, and time of
and field spikes.
sampling is dependent upon the decisions that are to be made
(see D6250), sampling design (see D6311), the sample, the
8. Pre-sampling Testing
heterogeneity of the samples (see D5956), how representative
8.1 Remove the pump cover plate. Slide the tubing through
the sample is (see D6044), and the parameters to be tested as
the clamps, position the clamps in their seats, and gently rotate
determinedbythedataqualityobjectives(DQOs)(seeD5792).
the pump mast to engage the tubing in the pump housing.With
the pump mast at the 6:00/12:00 position, the un-pinched
6. Sampling Equipment
tubing should touch the walls of the pump housing (Fig. 1a).A
6.1 Itisrecommendedthattwoperistalticpumpsbetakento
little slack is desirable.
the site with two pump specific clamps per unit.
8.2 Tighten each pump clamp and replace the pump cover
NOTE 1—There are many peristaltic pumps on the market from several
manufacturers. Consult with the manufacturers to determine the capabili-
plate.
ties of each pump for your application.
8.3 Install the battery and hook up the power lead.
6.2 Twofullychargedbatteries(orotherapplicablebatteries
8.4 Insert one end of the tubing into the liquid and the other
or AC/DC converter as required).
endintoawastecontainer.Thearrowonthepumppointstothe
6.3 New medical-grade rubber/silicone tubing (Dow-
discharge tube.
CorningSilasticorequivalent).Incorrosivesituations,alength
8.5 Activate the pump.
of PTFE tubing is used.
8.5.1 Observe the flow of the liquid through the tubing and
6.4 Applicable tubing couplers for discharge and intake as
into the waste container.
needed.
8.5.1.1 The system may be checked without liquid by
6.5 Tape measure or water level instrument.
placing a finger over the intake of the sampling system and
checking for vacuum.
6.6 Waste container.
8.5.2 Vary the pump speeds through the full range.
6.7 Plastic, glass, or other non-reactive containers should be
used as specified by the site sampling plan (see Guide D4687). NOTE 2—It is normal for the pump to be a little sluggish at slow speeds.
8.6 Turn the pump off and switch the tube ends so the
7. General Sample Collecltion
discharge tubing end is now the intake tubing end and the
7.1 Review the work
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