ASTM E938-2005(2011)e1 3985 Standard Test Method for Effectiveness of Liquid Gel or Cream Insecticides Against Adult Human Lice《抗成虫虱子的液状 胶状与乳状杀虫剂效果的标准试验方法》.pdf
《ASTM E938-2005(2011)e1 3985 Standard Test Method for Effectiveness of Liquid Gel or Cream Insecticides Against Adult Human Lice《抗成虫虱子的液状 胶状与乳状杀虫剂效果的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM E938-2005(2011)e1 3985 Standard Test Method for Effectiveness of Liquid Gel or Cream Insecticides Against Adult Human Lice《抗成虫虱子的液状 胶状与乳状杀虫剂效果的标准试验方法》.pdf(2页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E938 05 (Reapproved 2011)1Standard Test Method forEffectiveness of Liquid, Gel, or Cream Insecticides AgainstAdult Human Lice1This standard is issued under the fixed designation E938; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、 of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEEditorial changes were made throughout in April 2011.1. Scope1.1 This test method determines the ef
3、fectiveness of pedicu-licidal materials in liquid, gel, or cream form, against the adulthuman louse, Pediculus humanus humanus Linnaeus, thesurrogate subspecies for the human head louse (P.h. capitis).(Only gels or creams that liquefy at 32C (90F) can be tested).1.2 This test method is for the use o
4、f those wishing todevelop efficacy data, or to compare formulations for headlouse control.1.3 This test method consists of five replicates for a statis-tical comparison of formulations.1.4 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for inform
5、ationonly.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 this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Te
6、rminology2.1 Descriptions of Terms Specific to This Standard:2.1.1 morbidunable to move towards heat 1 h aftertreatment: sickly, but not necessarily dying; may recover by 24h.2.1.2 moribundunable to move towards heat (and there-fore food) 24 h after treatment; dying.3. Summary of Test Method3.1 Five
7、 replicates of 25 lice each, plus five control repli-cates for each batch of lice, shall be used for each testconcentration or any other variable tested.3.2 Percent mortality, corrected by Abbotts Formula, isdetermined.24. Significance and Use4.1 This test method should provide a consistent approach
8、both in terms of test insects and test procedures for thegathering of efficacy data for pediculicides.4.2 Data collection in this manner should be suitable forproduct development and comparison. In addition, it should besuitable for review by regulatory agencies.5. Apparatus and Materials5.1 Test Co
9、ntainerA 9-dram plastic vial, screened at thebottom with 20-mesh screen, shall be used as the dippingvessel. A plunger, made from a plastic rod, and a circularscreen fits inside the vial. Plastics used should be as chemicallyunreactive as possible. Plastic vials are to be discarded aftereach test.5.
10、2 BeakersA 100-mL beaker is used to contain theinsecticide into which the test container is dipped. A1000-mLbeaker is used as the container in which the lice are washedafter treatment.5.3 Heating SurfaceA slide dryer, that will provide heatof approximately 37C (98F), is adequate.5.4 IncubatorThe inc
11、ubator shall be capable of maintain-ing a temperature of 31.7C (89F) and 60 % RH.5.5 Petri dishes, 8.9 cm in diameter and 1.3 cm deep.5.6 WaterbathCapable of maintaining 32C (90F).5.7 Dark Cotton Corduroy,4by4cm.5.8 Paper Toweling, Stop Watch, Forceps or Camel HairBrush, and Wash Bottle.1This test m
12、ethod is under the jurisdiction of ASTM Committee E35 onPesticides, Antimicrobials, and Alternative Control Methods and is the directresponsibility of Subcommittee E35.12 on Insect Control Agents.Current edition approved March 1, 2011. Published April 2011. Originallyapproved in 1983. Last previous
13、edition approved in 2005 as E938 05. DOI:10.1520/E0938-05R11E01.2Abbott, W. S., “A Method of Computing the Effectiveness of An Insecticide,”Journal of Economic Entomology, Vol 18, 1925, pp. 265267.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, Un
14、ited States.5.9 Test InsectThe test insect is the human body louse,Pediculus humanus humanus Linnaeus. The present strain wasestablished from the USDA Gainesville strain.3It is a suscep-tible strain and, through selection, has adapted to a rabbit host.5.10 Host AnimalNew Zealand white rabbits.6. Rea
15、ring of Test Insects6.1 Collect eggs at 2-day intervals. This can be done whenthe corduroy patch is placed on the rabbit. The adult lice leavethe patch to feed. The patch is then removed from the rabbit.Any lice that do remain on the patch, should be removed.6.2 Place the patch containing eggs in a
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