ASTM D6050-21

Standard Test Method for Determination of Insoluble Solids in Organic Liquid Hazardous Waste

SIGNIFICANCE AND USE
5.1 A high percentage of insoluble, suspended solid material can create pumping, filtering, or grinding difficulties in the off-loading of bulk shipments of OLHW and can contribute to excessive wear on processing equipment. High solids can also decrease the quality and consistency of commingled solutions by decreasing the effectiveness of agitation in storage tanks. These issues are of concern to the recycling industries (solvents, paints, and other materials handled in significant quantities) in addition to those activities that propose to use the waste as a fuel.
SCOPE
1.1 This test method covers the determination of the approximate amount of insoluble, suspended solid material in organic liquid hazardous waste (OLHW).  
1.2 This test method is intended to be used in approximating the amount of insoluble, suspended solids in determining the material-handling characteristics and fuel quality of OLHW. It is not intended to replace more sophisticated procedures for the determination of total solids.  
1.3 Units—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 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.  
1.5 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: Published
• Publication Date: 30-Apr-2021
• ICS: 13.030.30 - Special wastes
• Technical Committee: D34 - Waste Management
• Drafting Committee: D34.01.06 - Analytical Methods

Standards Content (Sample)

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.
Designation: D6050 − 21
Standard Test Method for
Determination of Insoluble Solids in Organic Liquid
1
Hazardous Waste
This standard is issued under the fixed designation D6050; 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 3. Terminology
3.1 For definitions of terms used in this test method, refer to
1.1 This test method covers the determination of the ap-
Terminology D5681.
proximate amount of insoluble, suspended solid material in
organic liquid hazardous waste (OLHW).
4. Summary of Test Method
1.2 Thistestmethodisintendedtobeusedinapproximating
4.1 A 10-mL aliquot of OLHW sample is decanted into a
the amount of insoluble, suspended solids in determining the
15-mL graduated centrifuge tube and centrifuged for 3 min.
material-handling characteristics and fuel quality of OLHW. It
The separated liquid phase of the OLHW is decanted into an
isnotintendedtoreplacemoresophisticatedproceduresforthe
appropriate waste vessel. The centrifuge tube with the sepa-
determination of total solids.
rated solid material is brought back to its original 10-mL
1.3 Units—The values stated in SI units are to be regarded
volume with a user-selected blend of clean solvents and
as standard. No other units of measurement are included in this
agitated to mix the solid and liquid phases. The tube is
standard.
centrifuged for 2 min, and the amount of remaining solid
material is read.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Significance and Use
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter- 5.1 Ahighpercentageofinsoluble,suspendedsolidmaterial
mine the applicability of regulatory limitations prior to use. can create pumping, filtering, or grinding difficulties in the
off-loading of bulk shipments of OLHW and can contribute to
1.5 This international standard was developed in accor-
excessive wear on processing equipment. High solids can also
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the decrease the quality and consistency of commingled solutions
by decreasing the effectiveness of agitation in storage tanks.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical These issues are of concern to the recycling industries
(solvents, paints, and other materials handled in significant
Barriers to Trade (TBT) Committee.
quantities) in addition to those activities that propose to use the
waste as a fuel.
2. Referenced Documents
2.1 ASTM Standards:
6. Apparatus
D96 Test Method for Water and Sediment in Crude Oil by
2 6.1 Centrifuge—Capableofspinningtwoormorecentrifuge
Centrifuge Method (Field Procedure) (Withdrawn 2000)
tubes at a speed controlled to give a relative centrifugal force
D5283 Practice for Generation of Environmental Data Re-
ofbetween1200to1400.Thespeedtoachievethisisgenerally
lated to Waste ManagementActivities: QualityAssurance
between 3100 to 3600 rpm. The rotation speed necessary to
and Quality Control Planning and Implementation
achieve the relative centrifugal force can be determined from
D5681 Terminology for Waste and Waste Management
one of the following equations:
rcf
rpm 5 1335 (1)
Œ
1 d
This test method is under the jurisdiction of ASTM Committee D34 on Waste
Management and is the direct responsibility of Subcommittee D34.01.06 on
rcf
Analytical Methods.
rpm 5 265Π(2)
Current edition approved May 1, 2021. Published May 2021. Originally
d
approved in 1997. Last previous edition approved in 2016 as D6050 – 09 (2016).
DOI: 10.1520/D6050-21. where:
2
The last approved version of this historical standard is referenced on
rpm = rotation speed, in revolutions per min,
www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6050 − 21
10.2 Place the tubes from 10.1 in the trunnion cups or
rcf = relative centrifugal force, and
centrifuge tube slots on opposite sides of the centrifuge. Close
d = diameter of swing, in mm (Eq 1) or in. (Eq 2),
the centrifuge lid and engage safety lock, if so equipped.
measured between the tips of opposite tubes when the
tubes are in rotating position.
10.3 Set the centrifuge speed (r/min) to provide a minim
...

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: D6050 − 09 (Reapproved 2016) D6050 − 21
Standard Test Method for
Determination of Insoluble Solids in Organic Liquid
1
Hazardous Waste
This standard is issued under the fixed designation D6050; 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 the approximate amount of insoluble, suspended solid material in organic liquid
hazardous waste (OLHW).
1.2 This test method is intended to be used in approximating the amount of insoluble, suspended solids in determining the material
handling material-handling characteristics and fuel quality of OLHW. It is not intended to replace more sophisticated procedures
for the determination of total solids.
1.3 Units—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 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.
1.5 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
2.1 ASTM Standards:
2
D96 Test Method for Water and Sediment in Crude Oil by Centrifuge Method (Field Procedure) (Withdrawn 2000)
D5283 Practice for Generation of Environmental Data Related to Waste Management Activities: Quality Assurance and Quality
Control Planning and Implementation
D5681 Terminology for Waste and Waste Management
3. Terminology
3.1 For definitions of terms used in this test method, refer to Terminology D5681.
4. Summary of Test Method
4.1 A 10-mL aliquot of OLHW sample is decanted into a 15-mL graduated centrifuge tube and centrifuged for 3 min. The
1
This test method is under the jurisdiction of ASTM Committee D34 on Waste Management and is the direct responsibility of Subcommittee D34.01.06 on Analytical
Methods.
Current edition approved Feb. 1, 2016May 1, 2021. Published February 2016May 2021. Originally approved in 1997. Last previous edition approved in 20092016 as
D6050 – 09.D6050 – 09 (2016). DOI: 10.1520/D6050-09R16.10.1520/D6050-21.
2
Withdrawn. The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6050 − 21
separated liquid phase of the OLHW is decanted into an appropriate waste vessel. The centrifuge tube with the separated solid
material is brought back to its original 10-mL volume with a user-selected blend of clean solvents and agitated to mix the solid
and liquid phases. The tube is centrifuged for 2 min, and the amount of remaining solid material is read.
5. Significance and Use
5.1 A high percentage of insoluble, suspended solid material can create pumping, filtering, or grinding difficulties in the
off-loading of bulk shipments of OLHW and can contribute to excessive wear on processing equipment. High solids can also
decrease the quality and consistency of commingled solutions by decreasing the effectiveness of agitation in storage tanks. These
issues are of concern to the recycling industries (solvents, paints, and other materials handled in significant quantities) in addition
to those activities that propose to use the waste as a fuel.
6. Apparatus
6.1 Centrifuge—Capable of spinning two or more centrifuge tubes at a speed controlled to give a relative centrifugal force of
between 1200 to 1400. The speed to achieve this is generally between 3100 to 3600 rpm. The rotation speed necessary to achieve
the relative centrifugal force can be determined from one of the following equations:
rcf
rpm 5 1335Π(1)
d
rcf
rpm 5 265 (2)
Œ
d
where:
rpm = rotation speed, in revolutions per min,
rcf = relative centrifugal force, and
d = diameter of swing, in mm (Eq 1) or in. (Eq 2), measured between the tips of opposite t
...