1、MILR-50090D(MCT) AMENDMENT 2 18 November 1988 SUPERSEDING AMENDMEm 1. 30 August 1982 MILITARY SPECIFICATION RIOT CONTROL AGENT, CS1 This amendment forms a part of MILR-SOOPOD(MU), dated 19 August 1970, and is approved for use by the US. Army Chemi- cal Research, Development and Engineering Center, D
2、epartment of the Army and is available for use by all Departments and Agen- cies of the Department of Defense. PAGE 5 Delete paragraph 4.2.4.2 (including table II and table III) in its entirety and substitute “4.2.4.2 Ultimate particle size. the following: (a) Equipment. Use a Cambridge Instruments
3、Quantimet 920 image ana- lyzing microscope -system or an equivalent system, a microscope stage micrometer cali- brated in 10-micron and 100-micron intervals, and a four-blade electric stirrer capable of operating at 600 to 2,000 revolutions per minute. (b) Program for the Quantimet 920. (1) Enter sp
4、ecimen identity (2) Scanner (No. 1 Vidicon LV = 1.50 SENS = 1.16) (3) CALL STANDARD (4) Calibrate microscope (calibration value = 0.3444 microns per pixel) FSC 1365 Approved for public release; -distribution is unlimited. AMSC NIA DISTRIBUTION STATEMENT A. * 1 of 3 Provided by IHSNot for ResaleNo re
5、production or networking permitted without license from IHS-,-,- MIL-R-50070D (2) 33 7977706 0433660 T MIL-R-50090Do AMENDmNT 2 (5) Detect 2D (darker than 38 PAUSE) (6) Edit (pause) (7) Measure feature AREA X.FCP Y.FCP with limits 0.120 (=AREA 18429 into array FEATURE (of 500 features and 5 paramete
6、rs) (8) FEA= CALC : = 2. * (AREA / PI ) 0.50000 (9) Distribution of COUNT CALC (Units MICRONS) from FEATURE in HISTO1 FROM 0.500 to 50.50 in 25 bins 0 (10) Print distribution (HISTO1, differential, bar chart, scale = 0.00) (11) Display HiSTO1 (LJN) differential PAUSE (12) Not used (13) End of progra
7、m (c) Slide preparation. Weigh 0.150 g of the specimen into each of two 100-milliliter (mL) beakers. Add 20 mL of USP grade mineral oil to the first beaker and mix for 5 f 1 minutes with an electric stirrer having four blades and a diameter approxi- mately 1/2 inch smaller than the inside diameter o
8、f the beaker and operating at a speed of. approximately 1,750 revolutions per minute. While continuing to stir the mixture, with- draw a portion of the mixture with an eyedropper, taking it from a point just above the stirrer blades and approximately one-fourth the diameter of the beaker away from t
9、he inside wall. Immediately wipe the outside of the eyedropper. Place one drop of the mix- ture on a clean, dry, 1-inch by 3-inch microscope slide and cover with a No. 1, 3/4-inch diameter cover glass. In the same manner as described above, prepare a second slide from the first beaker. Then followin
10、g the same procedure with the second beaker, prepare a second pair of slides. Label the four slides to identify the beakers and specimen repre- sented. (d) Measurement. Place the slide on the stage of the microscope and select a field of view. Adjust the focus until a sharp image of the particles is
11、 detected. Begin the count. Restart the program and select a second field of view. Continue the selection of fields (approximately 8 to 10 fields) until a total of 1,000 particles are counted.” PAGE 11 Delete paragraph 6.6 in its entirety and substitute the following: “6.6 International standardizat
12、ion agreement. Certain provisions of this specifica- tion are the subject of international standardization agreement QSTAG 495. When amendment, revision, or cancellation of this specification is proposed which will modify the international agreement concerned, the preparing activity will take approp
13、riate action 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-50070D (2) 13 777770b 043Lbb1 L B. MIL-R-50090Dw AMENDmNT 2 through international standardization channels including departmental standardization of- fices to change the agreement or make other appropriate accommodations.” Custodian: Amiy - EA Preparing activity: Army - EA Project No. 1365-AO96 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
