GB/T 32065.9-2019Environmental test methods for oceanographic instruments—Part 9:Mould test (English PDF)

3.1 Test sequence

Generally, according to the provisions of Chapter 9 of GB/T 32065.1-2015, the test samples that have been tested for salt spray and sand dust need to be cleared. Long mold test can be carried out after the treatment.

3.2 Test time

The test time for the mildew test was 28d. If the agreement between the two parties requires an inspection of the impact on function and electrical performance, the test time is 56d.

3.3 Test temperature and relative humidity

The requirements for temperature and relative humidity of this test are as follows.

a) Temperature. 30 ° C ± 1 ° C;

b) Relative humidity. 95% ± 5%.

3.4 Test strains

The requirements for this test strain are as follows.

a) It is recommended to use the strains in Table 1 for testing, and if necessary, adjust the strain according to 3.4d).

b) The strain and frozen spores should be cultured and stored in the manner recommended by the strain provider. If the strain and frozen spores are not immediately Use, should be stored in the environment of 5 ° C ~ 10 ° C; the species used for preservation after activation from the inoculation container marked on the date of inoculation Counting, the training time is not less than 14d, but not more than 28d.

c) The container stopper containing the strain should not be removed before the preparation of the mold spore suspension. An open strain container can only be prepared once. Spore suspension.

d) Other mold strains may be added to the strains required by this test, and the increased strains shall be based on the degradation of the materials. Selection, but should not choose the strain that has significant inhibition on the strains in Table 1.