3.1 Pretest
The following information is required to conduct fungus tests adequately.
- a. General. Information listed in Part One, paragraphs 5.7 and 5.9; and Annex A, Task 405 of this Standard.
- b. Specific to This Method.
- (1) Test item composition if known.
- (2) Species to be used.
- (3) Additional species to be added based upon known materiel composition.
- (4) Duration of test.
- (5) Test item photographs.
- c. Tailoring. Necessary variations in the basic test procedures to accommodate LCEP requirements.
MIL-STD-810H
METHOD 508.8
| FUNGUS | FUNGUS SOURCES IDENTIFICATION NO.1 | MATERIALS AFFECTED | ||
|---|---|---|---|---|
| NRRL2 | USDA3 | ATCC4 | ||
| Aspergillus flavus (Aflotoxin not produced) | NRRL A5244 | QM 380 | ATCC 9643 | Leathers, textiles, rubber. Electrical insulation, varnish, wax, packing materials, etc. |
| Trichoderma virens | NRRL 2314 | QM 365 | ATCC 9645 | Degrades adhesives, cork, automotive components, electrical insulation, packing materials, plastics, polymers. |
| Talaromyces pinophilus (pinofilum) (formerly known as Penicillium funiculosum) | NRRL 3647 | QM 474 | ATCC 11797 | Textiles, plastics, cotton fabric, polymers, automotive components such as gaskets, distributors, cables, hoses, PVC, airborne equipment such as breakers, solenoids, switches, remote transmission accessories |
| Chaetomium globosum | NRRL 1870 | QM 459 | ATCC 6205 | Cellulose and any components containing paper and paper products such as packing materials, textiles, polymeric hydrocarbons and some synthetic polymeric materials |
| Aspergillus brasiliensis (formerly known as niger) | NRRL 3536 | QM 386 | ATCC 9642 | Textiles, vinyl, conformal coatings, etches glass, insulation, leather, etc.; resistant to tanning salts |
- Notes: 1. A catalogue number used by suppliers to identify various species within their collection.
- US Department of Agriculture, Northern Regional Research Center, ARS Culture Collection, 1815 North University Street, Peoria, IL 61604.
- US Department of Agriculture, Northern Regional Research Center, Quartermaster Collection, 1815 North University Street, Peoria, IL 61604.
- American Type Culture Collection, 10801 University Blvd, Manassas, VA 20110-2209. (All suppliers may distribute the fungus in a lyophilized state or on agar slants. See USDA or ATCC site for any permit information needed for each State).
3.2 During Test
Collect the following information during conduct of the test:
- a. General. Information listed in Part One, paragraph 5.10; and in Annex A, Tasks 405 and 406 of this Standard.
- b. Specific to This Method.
- (1) Record of chamber temperature and humidity versus time conditions.
- (2) Evidence of fungus growth on the cotton control strips at the 7-day check.
(3) Location of any fungal growth.
3.3 Post-Test
The following post test data shall be included in the test report.
- a. General. Information listed in Part One, paragraphs 5.10 and 5.13; and in Annex A, Task 406 of this Standard.
- b. Specific to This Method.
- (1) Evidence of fungus growth at the end of the test. If growth is found, identify the species if possible.
- (2) Narrative description of growth, including colors, areas covered, growth patterns, density of growth, and photographs. (See Table 508.8-II.)
- (3) Effect of fungus on performance or use:
- (a) As received from the chamber.
- (b) After removal of fungus, if appropriate.
- (c) Physiological or aesthetic considerations.
- (4) Observations to aid in failure analysis.
- (5) Any deviation from the original test plan or test request.