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ASTM D6566-18(2023)

(Test Method)

Standard Test Method for Measuring Mass Per Unit Area of Turf Reinforcement Mats

Standard Test Method for Measuring Mass Per Unit Area of Turf Reinforcement Mats

SIGNIFICANCE AND USE
5.1 This test method is used to determine if the turf reinforcement mat meets specifications for mass per unit area. This test method can be used for quality control to determine specimen conformance. This measurement allows for a simple control of the delivered material by a comparison of the mass per unit area of the delivered material and the specified mass per unit area.  
5.2 The procedure in this test method may be used for acceptance testing of commercial shipments, but caution is advised since information about between-laboratory precision is incomplete. Comparative tests in accordance with 5.2.1 are advisable.  
5.2.1 In case of a dispute arising from differences in reported test results when using the procedures in this test method for acceptance testing of commercial shipments, the purchaser and the manufacturer should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. At a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and which are from a lot of material of the type in question. The test specimen should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using the appropriate Student’s t-test and an acceptable probability level chosen by the two parties before testing is begun. If a bias is found, either its cause must be found and corrected or the purchaser and the manufacturer must agree to interpret future test results in light of the known bias.
SCOPE
1.1 This test method covers an index to the determination of mass per unit area of all turf reinforcement mats.  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
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 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-2023
ICS
65.020.20 - Plant growing
Technical Committee
D35 - Geosynthetics
Drafting Committee
D35.05 - Geosynthetic Erosion Control
Current Stage
Ref Project

Relations

Refers
ASTM D4354-12(2020) - Standard Practice for Sampling of Geosynthetics and Rolled Erosion Control Products (RECPs) for Testing
Effective Date
01-May-2020

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ASTM D6566-18(2023) - Standard Test Method for Measuring Mass Per Unit Area of Turf Reinforcement MatsASTM D6566-18(2023) - Standard Test Method for Measuring Mass Per Unit Area of Turf Reinforcement Mats
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ASTM D6566-18(2023) - Standard Test Method for Measuring Mass Per Unit Area of Turf Reinforcement Mats
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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: D6566 − 18 (Reapproved 2023)
Standard Test Method for
1
Measuring Mass Per Unit Area of Turf Reinforcement Mats
This standard is issued under the fixed designation D6566; 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
1.1 This test method covers an index to the determination of 3.1 For definitions of textile terms used in this test method,
mass per unit area of all turf reinforcement mats. refer to Terminology D123.
1.2 The values stated in SI units are to be regarded as 3.2 For definitions of terms relating to geotextiles used in
standard. The values given in parentheses are for information this test method, refer to Terminology D4439.
only.
4. Summary of Test Method
1.3 This standard does not purport to address all of the
4.1 The mass per unit area of a turf reinforcement mat is
safety concerns, if any, associated with its use. It is the
determined by weighing test specimens of known dimensions,
responsibility of the user of this standard to establish appro-
cut from equally spaced distances over the full width of the
priate safety, health, and environmental practices and deter-
laboratory sample. The calculated values are then averaged to
mine the applicability of regulatory limitations prior to use.
obtain the mean mass per unit area of the laboratory sample.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5. Significance and Use
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 5.1 This test method is used to determine if the turf
mendations issued by the World Trade Organization Technical reinforcement mat meets specifications for mass per unit area.
Barriers to Trade (TBT) Committee. This test method can be used for quality control to determine
specimen conformance. This measurement allows for a simple
2. Referenced Documents
control of the delivered material by a comparison of the mass
2
per unit area of the delivered material and the specified mass
2.1 ASTM Standards:
per unit area.
D123 Terminology Relating to Textiles
D1776 Practice for Conditioning and Testing Textiles 5.2 The procedure in this test method may be used for
D4354 Practice for Sampling of Geosynthetics and Rolled
acceptance testing of commercial shipments, but caution is
Erosion Control Products (RECPs) for Testing advised since information about between-laboratory precision
D4439 Terminology for Geosynthetics
is incomplete. Comparative tests in accordance with 5.2.1 are
E177 Practice for Use of the Terms Precision and Bias in
advisable.
ASTM Test Methods
5.2.1 In case of a dispute arising from differences in
E691 Practice for Conducting an Interlaboratory Study to
reported test results when using the procedures in this test
Determine the Precision of a Test Method method for acceptance testing of commercial shipments, the
3
purchaser and the manufacturer should conduct comparative
2.2 ISO/DIS Document:
tests to determine if there is a statistical bias between their
9864-1990 Mass Per Unit Area of Geotextiles
laboratories. Competent statistical assistance is recommended
for the investigation of bias. At a minimum, the two parties
should take a group of test specimens that are as homogeneous
1
This test method is under the jurisdiction of ASTM Committee D35 on
as possible and which are from a lot of material of the type in
Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn-
thetic Erosion Control.
question. The test specimen should then be randomly assigned
Current edition approved May 1, 2023. Published May 2023. Originally
in equal numbers to each laboratory for testing. The average
approved in 2000. Last previous edition approved in 2018 as D6566 – 18. DOI:
results from the two laboratories should be compared using the
10.1520/D6566-18R23.
2
appropriate Student’s t-test and an acceptable probability level
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
chosen by the two parties before testing is begun. If a bias is
Standards volume information, refer to the standard’s Document Summary page on
found, either its cause must be found and corrected or the
the ASTM website.
3
purchaser and the manufacturer must agree to interpret future
Available from American National Standards In
...

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1.1 This test method establishes the procedures for evaluation of the deformations of a turf reinforcement mat (TRM) under short-term compressive loading. This test method is strictly an index test method to be used to verify the compressive strength consistency of a given manufactured geosynthetic. Results from this test method should not be considered as an indication of actual or long-term performance of the TRM in field applications.  
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Standard Specification for Maintaining Acceptable Water Activity (aw) Range (0.55 to 0.65) for Dry Cannabis Flower Intended for Human/Animal Use

ABSTRACT
This specification prescribes the recommended range of water activity (aw) suitable for safe and efficacious storage of cannabis flowers or portions thereof. Water activity (aw) is defined as the partial vapor pressure of water in a substance divided by the partial vapor pressure of pure water at the same temperature, which can be calculated by dividing the partial vapor pressure of water in the substance by the partial vapor pressure of pure water at the same temperature. This describes quantitatively the capability of the cannabis flower in a sealed container to affect the humidity of the container's headspace air. aw shall be less than 0.65 to ensure against undesirable growth of microorganisms such as mold, and shall be greater than 0.55 to ensure against physical damage (breakage) in routine handling and storage. If aw exceeds 0.68, further drying of the cannabis flower(s) shall be required to ensure that the aw is in the range 0.55–0.65. If aw is less than 0.68, co-storage with a salt-based aw (relative humidity) control sachet(s) designed to maintain the relative humidity between 0.55 to 0.65 can effectively bring the stored cannabis flower(s) into the specified 0.55–0.65 range. Storing cannabis flower with appropriately designed aw (relative humidity) salt-based control sachets intended to ensure a relative humidity of 0.55 to 0.65 in sealed containers can maintain the optimum storage conditions.
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SCOPE
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4.6.4 Supplier onboarding.  
4.6.5 Supplier performance and risk management.  
4.6.6 Supplier relationship management.  
4.6.7 Supplier offboarding.  
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SCOPE
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Standard Test Method for Analysis of Multiple Elements in Cannabis Matrices by Inductively Coupled Plasma Mass Spectrometry (ICP-MS)

SIGNIFICANCE AND USE
5.1 Medical and/or recreational marijuana (cannabis) has been legalized for adult use in many countries and states within the USA (5). Many jurisdictions that permit the use of medicinal and recreational marijuana require testing of cannabis and associated products to ensure safety from contaminants, especially the toxic “big four” elements such as As, Cd, Hg, and Pb (6), and other metals worthy of consideration (6). These heavy metals can accumulate in plants grown in polluted soils or contamination can occur during the manufacturing process (7). In addition to ensuring product safety, the analysis of mineral and other trace elements is required for labeling purposes when these products are sold as nutritional supplements. Trace element analysis of plant and nutritional supplement materials is a well-established application (8). Following acidic digestion to break down the plant-based samples' primary components, ICP-MS is often used for quantitative analysis because of its multi-element capability, high sensitivity, speed, robustness, and wide dynamic range.  
5.2 This test method covers the rapid determination of multiple elements in cannabis sample digests. The elements include the priority toxic elements (As, Cd, Hg, and Pb), as well as elements required by some states and elements of interest in the cannabis community (V, Cr, Cu, Zn, Sb, Ba, Se, Ag, Na, Al, K, Mn, Fe, Co, Ni, Mo, Tl, Th, and U). Irrespective of the number of elements being measured, test times are approximately a few minutes per test specimen, and detectability for most elements is in the low- to sub-ppb range.
SCOPE
1.1 This test method uses inductively coupled plasma mass spectrometry (ICP-MS) to determine multiple trace elements in cannabis and cannabis-related matrices following sample preparation using microwave-assisted acid digestion. This test method is applicable to the quantification of trace levels of elements in dried plant materials, concentrates, oils, extracts, tinctures of cannabis and cannabis-related products. Other matrices may be added provided that the lab validates the extra matrices using Practice D8282. Details are provided on the validation of both the sample preparation procedure and analytical method using certified reference materials (CRMs) and validation of the analytical method using spike recovery testing of several cannabis based samples.  
1.2 This test method should be used by analysts experienced in the use of microwave digestion and ICP-MS, matrix interferences, and procedures for their correction or reduction, and should only be used by personnel trained in the handling, preparation, and analysis of samples for the determination of trace elements in cannabis and cannabis products (1).2 This test method was developed using a single quadrupole ICP-MS equipped with a collision/reaction cell (CRC) that can be pressurized with helium (He) gas for the removal of polyatomic interferences using kinetic energy discrimination (KED). This test method can also be run using a triple quadrupole or “tandem” mass spectrometer (MS/MS) ICP-MS instrument, which is fitted with CRC technology. The ICP-MS method accounts for polyatomic interferences, which are the most common spectral overlaps in ICP-MS, isobaric interferences, and any potential doubly-charged ion interferences (M2+) that may arise from the presence of rare earth elements (REEs) in the samples, as the REE2+ ion interferences can affect the accuracy of the measurement of arsenic (As) and selenium (Se) in the samples. Table 1 lists elements for which the test method applies along with recommended analytical masses, and secondary masses for some elements. The priority toxic elements arsenic (As), cadmium (Cd), mercury (Hg), and lead (Pb), also sometimes referred to as the “big four” toxic trace elements are listed separately because of their toxicity, as discussed in 5.1.  
1.3 Certified reference materials (CRMs) should be matrix matc...

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