Period of validity of pollution source monitoring report is an important condition for ensuring justice and seriousness of execution of environmental law as well as the assurance of a good status of a law_abiding enterprise in society.

The results show that the period of validity is beyond two years and the reliability is greater than 95%

The analysis of the validity of the Na_2S_2O_3;

Determination of the validity about Vitamin C Injection;

The fracturing effect is usually reflected by valid period.

Swellable particulate's capability and dosage magnitude and oil store condition are main affect valid period validity of swellable particulate.

The result showed that the stability of this dosage form was the best, and predicted that effective period is more than three years, this wiu meet the needs of animal pharmaceuticals and clinical application.

The results show that the evidently effective period and effective period are 10～15d and 5～7d separately by studying the pharmacology of Fenxiuning with the incubation test, and that the evidently effective period and effective period delay and shorten resp.

Objective To explore the sterilization effect of high pressure steam and ethylene oxide(EO) on the articles packed with full cotton and medical ripple paper, and determine the expiry date of the articles packed with the two different materials with different sterilization methods and under different stocking conditions.

Objective To control the quality and to ascertain the expiry date of erythromycin eye ointment.

An expiry forecast of ciprofloxacin lactate glucose injection;

Off-line electronic cash scheme embedded expiry;

Its expiry shall be 2 years.