Testing, repeatability

After the completion of the balanced acceleration and deceleration runs, the unbalance weight must be placed at the predetermined location and the acceleration and deceleration test repeated using the same recording instrumentation. The results should be compared to the appropriate computer predictions and the API acceptance criteria applied. Acceptance criteria were added in the API 617 sixth edition. 

Where a number of properties are relevant to a product the testing may be carried out with a sequence of tests without superimposing any ageing. Where environmental effects have to be accounted for they are applied separately and the rig tests repeated. An example of this approach is artificial sports surfaces where such characteristics as ball bounce, energy absorption, dynamic stiffness and spike resistance are measured using specifically developed rigs. 

Further uncertainty arises from the environmental exposure. For accelerated tests, repeatability can be estimated from exposure of replicate test pieces and minimised by control of the exposure conditions. Particular points to consider are spatial variation in temperature as well as mean temperature and air flow in ovens. In accelerated weathering apparatus, spatial variation and variation with time of light sources can be very significant. 

This null hypothesis is tested repeatedly for different analyte concentrations in each matrix of interest. The overall testing strategy is frequently complicated by special rules that depend on the reasons why the method is being developed in the first place. Always, however, the first rule is ... 

Plastic piping should only be used as specified by the manufacturers and listed by UL or equivalent. New water lines should be subjected to a hydrostatic test of 150% of design pressure for at least 2 hours (NFPA 24). Leaks should be repaired and tests repeated as necessary before lines are covered. 

B.26 Sub-Chronic Oral Toxicity Test Repeated Dose 90-Day Toxicity Study in Rodents (2001)... 

B.26 Sub-chronic oral toxicity test. Repeated dose 90-day toxicity study in rodents B.27 Sub-chronic oral toxicity test Repeated dose 90-day toxicity study in non-rodents B.28 Sub-chronic dermal toxicity test 90-Day repeated dermal dose study using rodent species B.29 Sub-chronic inhalation toxicity test 90-Day repeated inhalation dose study using rodent species B.30 Chronic toxicity test... 

Each month of therapy, the patient must have a negative result from a urine or serum pregnancy test. Repeat the pregnancy test each month prior to the female patient receiving each prescription. 

For failures due to incomplete or substandard installation during IQ or early stages of OQ, authorized remedial action may be taken and the test repeated. 

If one or both of the duplicate tubes yields a positive endotoxic response, proceed to phase II testing. Repeat steps 38 and 39. Record results. 

Were tests repeated a sufficient number of times to ensure... 

If the A5 2 of the sample is >1, then a smaller sample mass or a more dilute stock solution should be used and the test repeated. 

The preliminary test, repeated with suitable variation of the quantities of reagent and substance and taking into account the reducing power of invert sugar, may serve for the approximate determination of the latter. 

Procedure. 100 c.c. of the wine are treated in a porcelain basin with a slight excess of slaked lime,2 the liquid being evaporated to dryness and the residue, detached as far as possible from the walls of the vessel, well mixed with 30 c.c. of 95% alcohol. After 10 minutes the liquid is filtered into a small porcelain dish and evaporated on a water-bath. The residue is treated with 1 c.c. of distilled water and one-half of the liquid dropped carefully on to the sulphuric acid solution of diphenylamine in a wide test-tube. If an intense blue coloration is obtained, the residual liquid is diluted with water and the test repeated in this way an idea of the amount of nitrate is obtained. 

Wi th a steel shoe raised to the height of 1 m, spread a 7 g sample of the explosive evenly in and about the grooved portion of the anvil, and allow the shoe to strike the sample with glancing blows until it comes to rest. Clean die anvil and shoe, place another portion of die same expl and continue the test Repeat.test a tot si of 10 times and report the number of snaps, cracklings, ignitions, and/or explosions, if the sample detonates of ter 1 or 2 trials, discontinue the test in Older to prevent damage to the apparatus. Such an explosive is considered os not passing die permissibility test. If the expl remains unaffected In 10 trials with the... 

Valuable advice from KAISER and GOTTSCHALK [1972] is to perform two outlier tests. The first test should use P = 99%, which ensures a low type I error, and the significance of which clearly indicates an outlier. The second test with P = 0.95, if nonsignificant, guarantees a low type II error and that the distribution is free from outliers. If the test value is between, n should be increased and the tests repeated. 

If the resin gives the positive test, repeat steps 2-5 with newly prepared reagents. 

Objective irritation is defined as nonimmunologically mediated, localized inflammation of the skin, usually resulting from contact with a substance that chemically damages the skin.2,9 The exact mechanism is unknown, and it is likely that both endogenous and exogenous factors are involved. In vivo predictive testing in animals (e.g., modified Draize test, repeated application patch tests,... 

The firing time test can also be conducted by immersing to a fixed depth. in a bath of molten Wood s metal, (preheated to a desired temp and maintained constant) a metal Blasting Cap contg a small sample to test of const wt, say 0.02g. The time required to deflgr or explode is noted and the test repeated at various other temps of the bath (Ref 2, pp XVI XVII). The lower is the temp of exposure the longer is the time required to deflgr or explode a sample. For example, if an unknown sample required 12... 

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