Susceptibility testing definition

Bacterial culture, identification of the causative pathogenic microorganism, susceptibility testing, definitive diagnosis, selection of the antimicrobial agent of choice, and... 

EUCAST (2000), Terminology relating to methods for the determination of snscepti-bility of bacteria to antimicrobial agents , European Committee on Antimicrobial Susceptibility Testing Definitive document E.Def 1.2 May 2000 http //www.srga. org/Eucastwt/eucastdefinitions.htm. 

Table III. It is obvious from the data in Table III that the housefly and the mosquito, in both the adult and larval stage, are susceptible to insecticides of the DDT type. However, the extravagant claims that DFDT is far superior to DDT as a contact insecticide against flies are not borne out by the results of controlled laboratory tests. The Peet-Grady testing technique used by Prill (92) would indicate that in the presence of added pyrethrins DDT is definitely superior to DFDT when applied as a spray. On the other hand, DFDT gave higher percentage kills than DDT when flies were placed under a Petri dish and held in contact with deposits of the compounds on glass surfaces. A comparison of the activity of these compounds against adult mosquitoes has not been reported.

The failure time, however, incorporates both the time required for crack initiation and a period of slow crack growth so that the separate effect of the environment on each of these stages cannot be ascertained. (Some of the difficulty stems from the lack of a precise definition for crack initiation.) This difficulty is underscored by the results of Brown and Beachem [1] on SCC of titanium alloys. They showed that certain of the alloys that appeared to be immune to stress corrosion cracking in the traditional (smooth specimen) tests are, in fact, highly susceptible to environment-enhanced crack growth. The apparent immunity was explained by the fact that these alloys were nearly immune to pitting corrosion, which was required for crack nucleation in the same environment [1]. 

The ignition temperature is used to characterize the susceptibility of a liquid to self-ignite at a hot surface. This conforms to its definition as the lowest temperature under standardized conditions at which ignition is observed if a liquid gets into contact with a hot surface in the presence of air. Standards which describe the test method in detail are the German DIN 51794 and the European Directive L383-A98, aimex 9... 

ASTM G 32, Method for Vibratory Cavitation Erosion Test— This standard presents a test method for determining the susceptibility of an alloy in an electrolyte to cavitation damage using high-frequency vibration. In general, the rate of erosion is determined by weight loss of the specimen. The method contains terminology definitions, a description of the apparatus, test specimen dimensions and preparation, test conditions, test procedures, interpretation of residts, and report considerations. 

---