Meantime,the drying time can be shortened,the content of Na_(2)S_(2)O_(3) and Na_(2)SO_(3) in anhydrous sodium sulphide obtained are less than 1.0%,which is satisfactory for the quality requirement of PPS resin synthesis.
The result indicated that the physical properties of the tobacco slice could meet the quality requirement after being treated on the following conditions: the ratio of tobacco caulis,tobacco leaf and pulp 1∶0.3∶0.05,the syrup degree 40°SR.
Starting from the quality requirement postulated by the GB/T 19000 series standard and with an eye on the special feature of utility boilers, the author suggests that the overall evaluation of product quality of utility boilers be based on the following 6 aspects of quality, namely: reliability, ability of full capacity operation, efficiency, matching capability, controllability, and environmental protection.
The test result also shows that: the quality requirement of flour for making frozen dumpling is that: the moist gluten content is 29%-31%, starch content is 70%-71%, and ash content below 0.45%, moisture content below 14.5%.
In the pilot test, the HA product is white powder, the HA recovery rate is 70%, the molecular weight is higher than 1.4x 10~6, the content of protein is lower than 0.5%, the content of glucuronate is 39.1%. Analysing with infrared absorption spectroscopy and ultravioler spectroscopy,it can be seen that the products have reached the quality requirement of cosmetic grade HA.
The quality requirement on undulator magnet field are analysed considering demands of light users as well as that of the electron beam stability. It is given that the first and second integral of the magnet field should be less than 2×10-4T·m and 2×10-4T·m2 respectively, the phase error should be less than 10°.
Furthermore, these approaches assume that process variability is small in comparison to the quality requirement, and that the phenomena of process shifting or deterioration are not factors of manufacturing operations.
The question of a clear criterion for analytical procedure validation is also addressed from the standpoint of the quality requirement which measurement results need to meet as an end-product.
The quality requirement of data sources depends on the given goal of the study.
The customer's expectation of the quality requirement of any product depends on the cost incurred by him.
There is a second issue to consider, namely the quality requirement.
In order to further improve the techniques of oilfield produced water treatment and reinjection, the author, in combination with cases investigated abroad, introduces, in particular, the quality requirements of injection water. the mechanism of corrosion by oxygen and the importance of and measures for custody oxygen isolation and oxygen re- moval in field preduced water treatment systems and water injection systems.
A ready method for small-scale preparation of Mg(PO3)2 has been described. The products thus obtained meet the quality requirements for glass raw materials.
A suitable method for determination of activity of pharmaceutical elastase is described. The paper involves the dynamic characteristics of elastase which digests the substrate and the procedure for determining the elastase powder and its tablets. The reproducibility of the proposed method is also observed. The results indicated that the method mentioned above can meet the quality requirements of pharma- ceutical proposes.