1、Designation:D837421Standard Guide forPersonal Cannabis/Hemp Plant Growing Appliances1This standard is issued under the fixed designation D8374;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in pare
2、ntheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide is intended to define characteristics,func-tions and technologies commonly present in personal cannabis/hemp plant growing appliances1.2 This
3、guide will provide clarity and understanding to theindustry,government,consumers and the general public ondifferent features and technologies that may be present and/orare used in the design and manufacture of personal cannabis/hemp plant growing appliances.1.3 This guide shall be used in conjunctio
4、n with Classifica-tion D8390.1.4 UnitsThe values stated in SI units are to be regardedas standard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of t
5、his standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Deci
6、sion on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D8390 Classification for Domestic Cannabis/Hemp PlantIndoor Growing Appliances3.Termi
7、nology3.1 Definitions of Terms Specific to This Standard:3.1.1 array pattern,na group of LEDs arranged in rowsand columns that form a complete unit.3.1.2 bubbler,nan irrigation system component that re-sides at the end of a micro delivery line from which smalllow-pressure water stream bubbles upward
8、 in a similar mannerto a drinking fountain stream that wets the cannabis plants rootzone.3.1.3 closed cell foam,na type of foam material that iscommonly used where liquid resistance is desirable.3.1.4 drip emitter,nan irrigation system delivery compo-nent that resides at the end of a micro delivery
9、line used todeliver drips of water directly to the cannabis plants roots in aslow and steady manner.3.1.5 fertilizer,na term used for chemical substances thatcontain nutrients that aid in plant growth.3.1.5.1 DiscussionFertilizers are typically applied to soilmedium to supplement or enhance elements
10、 found naturally insoil and to help in the replacement of these elements that havebeen consumed by plants.3.1.5.2 DiscussionFertilizers are composed of primary(macro nutrients),secondary(micro nutrients),and tertiary(minor nutrients).The most prominent macro nutrients forcannabis growth are Nitrogen
11、(N),Phosphorus(P),and Potas-sium(K)commonly referred to as NPK.In addition,micronutrients such as Calcium(Ca),Magnesium(Mg),and Sul-fur(S)are used to supplement cannabis plant growth,as well asother minor nutrients such as Manganese(Mn),Boron(B),Iron(Fe),Copper(Cu),Nickel(Ni),Zinc(Zn),Molybdenum(Mo)
12、,and Chlorine(Cl).3.1.6 main delivery line,na larger diameter supply linethat is directly connected to a main water supply whichmay/may not be pressure regulated and timer controlled.3.1.6.1 Discussionthe main delivery line will have mul-tiple micro delivery lines inserted to which drip emitters,str
13、eam emitters,bubblers,micro sprayers or combinations areattached for controlled water delivery.3.1.7 medium,na means to carry nutrients to help in plantgrowth and development.3.1.8 micro sprayer,na low pressure irrigation systemcomponent that resides at the end of a micro delivery linewith/without a
14、n elevated stake,used to deliver water directly to1This guide is under the jurisdiction of ASTM Committee D37 on Cannabis andis the direct responsibility of Subcommittee D37.08 on Cannabis Devices andAppliances.Current edition approved Feb.1,2021.Published June 2021.DOI:10.1520/D8374-21.2For referen
15、ced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohock
16、en,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1plants in an umbrella like spray pattern.Spray patterns maycover various angles such as 90,180 and 360.3.1.9 nutrient,nany substance that provides nourishm
