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Standard Test Methods for Resistance of Adhesive Preparations in Container to Attack by Bacteria, Yeast, and Fungi
Automaticky preložený názov:
Štandardné skúšobné metódy pre Odpor adhezívne prípravky do kontajnera k napadnutiu baktérie, kvasinky a plesne
NORMA vydaná dňa 1.10.2013
Označenie normy: ASTM D4783-01(2013)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.10.2013
Kód tovaru: NS-28550
Počet strán: 10
Približná hmotnosť: 30 g (0.07 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
adhesive, bacteria, biological testing, culture, fungi, growth, yeast, ICS Number Code 83.180 (Adhesives)
Significance and Use | ||||||||||||
5.1 These test methods are used to demonstrate whether an adhesive preparation is sufficiently protected with biocide to resist attack by bacteria, yeast, and fungi during its storage life. They are patterned after methods used by biological laboratories serving the adhesive industry. 5.2 These test methods may also be used to determine the efficacy of different biocide systems against specific microorganisms. 5.3 These test methods are especially useful when tested against wild-type microorganisms which have been isolated from contaminated adhesives as an aid in determining the amount and type of biocide necessary to kill or inhibit the growth of the contaminants. If an isolated microorganism not generally used as a challenge organism, is chosen as the inoculum, it is important to identify the organism and determine on which medium and under what conditions it will grow, in order to demonstrate the efficacy of the biocide. 5.4 The results obtained when using the procedures given in these methods apply only to the species which are used for the testing. The test species listed in Section 5.5 The presence of an active biocide carried over from the adhesive specimen to the agar could have an inhibiting effect on the growth of microorganisms, resulting in no growth during the span of a normal incubation period, when in fact, viable microorganisms are present, but their growth has been slowed down or held in stasis. The use of Letheen agar and broth is recommended to neutralize the effect of this carry-over. 5.6 These test methods are dependent
upon the physiological action of living microorganisms under a
reported set of conditions. Conclusions about the resistance of the
test adhesive to microbiological attack can be drawn by comparing
the results to simultaneously run controls of known resistance. See
1.1 These test methods cover the
determination of the resistance of liquid adhesive preparations to
microbial attack in the container by challenging adhesive specimens
with cultures of bacteria, yeast, or fungi, and checking for their
ability to return to sterility. These test methods return
qualitative results.
1.2 The values stated in SI units are to be regarded as the standard. The values 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 and health practices and determine
the applicability of regulatory limitations prior to use.
Test Method for Effect of Bacterial
Contamination on Performance of Adhesive Preparations and Adhesives
Films (Withdrawn 1990) Standard Test Methods for Ability of
Adhesive Films to Support or Resist the Growth of Fungi Standard Test Method for Preservatives in
Water-Containing Cosmetics Standard Terminology of Adhesives T?487 Fungus Resistance of Paper and Paperboard
Available from Technical Association of the Pulp and Paper Industry
(TAPPI), 15 Technology Parkway South, Norcross, GA 30092,
http://www.tappi.org. Cosmetics Preservation, Method?38 This
method is the same as Test Method . |
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