Time of Testing

As trivial as the time of testing may be, the time interval between when testing is performed has been identified as a potential source of difference between 

TABLE 16-7. Number of Retests Required to Achieve Agreemeut Betweeu Results 

Number of Retest, K True % of Suspect Results with 95% Chance of Meeting Acceptance Criteria 

Source Adapted from I. D. Hofer, Pharm. Technol. 27(11) (2003), 62. 

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When a flocculated feed is added to a filter tank, there is a definite time lag before this material reaches the surface of the filter medium. Since this lag time is not known at the time of testing, a lag time of 8 to 10 minutes should be allowed before starting the first leaf test on a flocculated shiny. Two, or perhaps three, tests can be run before the elapsed time exceeds the probable retention time in the full-scale filter tank. With knowledge of the elapsed time after flocculation and data relating to the rate of degradation, the rates obtained on the leaf test runs can be adjusted to some constant lag time consistent with the anticipated full-sc e design. 

Design heat input (watts) - - sum of (surface constants xTD to outside at time of test) for each surfaced sum of constants for all other (outside) surfaces... 

ASSESSMENT OF LEVEL OF CONTROL ANO TYPE OF TEST CONDITION AT TIME OF TEST ... 

The electrical resistance of a coating on a pipeline will depend upon the effectiveness of its initial application to the metal and on its condition at the time of testing absorption of moisture may decrease the resistance by as little as 10% during a 2y-year period. The leakage resistance of a given section of pipeline can be determined by the following procedure ... 

Neurobehavioral effects, measured in various discrimination reversal and operant learning tests, were observed in lead exposed rats. PbB levels in rats as low as 15-20 pg/dL were associated with slower learning and higher rates of inappropriate responses (Cory-Slechta et al. 1985 Jadhav and Areola 1997). Neurobehavioral alterations were also reported in young rats that had been exposed to lead via maternal milk, but that at the time of testing had PbB levels below the detection limit (Cory-Slechta et al. 1992). 

Fig. 3.10 Relative activities of endo-l,3-P-D-glucanase L V in aqueous solution (1) and in the immobilized state (2) as well as immobilized endo-l,3-P-D-glucanase L0 (3) vs. the time of testing. The enzyme entrapment was performed as described in Refs. [55,56], The silica matrix...

The retention times of test solutes are correlated with reference compounds whose partition coefficients in octanol/water (Kow) are known The reliability of this technique depends on the extent to which the stationary and mobile phases simulate the octanol/water system... 

What effect will an increase in the time of testing have on tensile strength ... 

Wet cure was in saturated lime water until time 0 test dry cure was storage in laboratory air (about 25° C and 50% relative humidity) until time of test. 

Test No 5 Ignition Time Test A small quantity of the explosive is fastened to the end of a pendulum which swings through a flame in such a manner that the time required to ignite the sample can be measured. (For details, see under Ignition Time of. Test)... 

Rodier PM (1986) Time of exposure and time of testing in developmental neurotoxicology. Neurotoxicology. 7 69-76. 

Coke and smoke formation was found to increase up to an equilibrium level with increasing pressure, fuel-air ratio, and time of test. Variation in velocity and temperature produced conflicting results, with smoke and deposits increasing or decreasing, depending on operating conditions and design of the combustor. 

Blood (plasma, serum, or whole blood) and, with some limits, OFs give detailed information about what is occuring at the time of testing hair analysis demonstrates the history of abuse, that could backdate several months. 

Adhesive testing can also be classified as to the condition of the epoxy adhesive at the time of test. Tests are conducted on the... 

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