Storage testing

What is the safe storage temperature for shelf life Kinetic data Data from 1 and 2 Isothermal Storage Test... 

The Results of Long-Term Storage Tests For Compatability of Nitrogen Tetroxide With Various Spacecraft Materials , SR No 2, JPL Contract No 951581 (NAS7-100) (1967)... 

FIG. 4 Long-term storage test of disodium lauryl sulfosuccinate, actives. 

Davies, O. L., and Hudson, H. E., Stability of Drugs—Accelerated Storage Tests, Chapter 21B in Statistics in the Pharmaceutical Industry, C. R. Buncher and J.-Y. Tsay, Eds., Marcel Dekker, 1994. 

D Miller, EM Wiener, A Turowski, C Thunig, H Hoffmann. O/W emulsions for cosmetic products stabilized by alkyl phosphates rheology and storage tests. Colloids Surfaces A Physicochem Eng Aspects 152(1-2) 155-160, 1999. 

Parameters for crop growth are weight of leaves and leaf colour. Parameters for carrot growth are root weight, monosaccharide content, nitrate content, emission of spectral range luminescence and rot in storage test (trend). 

Samples were processed in clean rooms in the shore laboratory within 30 min of sampling. Results indicated (i) the feasibility of inter-calibrating using the enclosure approach (ii) the availability of chemical techniques of sufficient precision in the case of copper, nickel, lead, and cobalt for sampler intercomparison and storage tests and (iii) a problem in sub-sampling from the captured seawater in a sampler, and the difficulty of commonly used samplers to sample seawater in an uncontaminated way at the desired depth. 

The following analytical techniques seem to be adequate for the concentrations under consideration copper and nickel by Freon extraction and FAA cold vapour atomic absorption spectrometry, cobalt by Chelex extraction and differential pulse polarography, mercury by cold vapour atomic absorption absorptiometry, lead by isotope dilution plus clean room manipulation and mass spectrometry. These techniques may be used to detect changes in the above elements for storage tests Cu at 8 nmol/kg, Ni at 5 nmol/kg, Co at 0.5 nmol/kg, Hg at 0.1 nmol/kg, and Pb at 0.7 nmol/kg. 

Isothermal storage tests (1ST), scanning or isothermal heat-flux micro-calorimeters, thermal activity monitor (TAM)—see Section 2.3.2.1,... 

Dewar flask tests, adiabatic storage tests (AST)—see Section 2.3.2.2, and... 

These tests can also be used to evaluate the induction time for the start of an exothermic decomposition, and the compatibility with metals, additives, and contaminants. The initial part of the runaway behavior can also be investigated by Dewar tests and adiabatic storage tests. To record the complete runaway behavior and often the adibatic temperature rise, that is, the consequences of a runaway, the accelerating rate calorimeter (ARC) can be used, although it is a smaller scale test. 

In the isothermal storage test (1ST) [115, 116], the heat generated at constant temperature by reacting or decomposing substances is measured as a function of time. An example of an 1ST is shown in Figure 2.17. The test is... 

FIGURE 2.17. Cross-Section of an Isothermal Storage Test (1ST). 

Modem Dewar flask equipment includes an adiabatic shield, a compensation heater, and a computer to provide for control and for data acquisition and analysis. An example of the application of an advanced design is the adiabatic storage test (AST) [120,121]. In the AST, the heat generated at nearly adiabatic conditions by the reacting or decomposing substances is determined as a function of time. 

The stability of powders can be determined by adiabatic storage tests or Dewar flask tests under an air atmosphere (Section 2.3.2.2). Several other dedicated tests have been developed [10,133-136]. 

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