MIL-STD-1330D(SH) APPENDIX C
20 September 1996
C.5 Apparatus.
(a) Laboratory homogenizer with 500-1000 watt motor power with a no load speed control of 10,000 to 30,000 revolutions per minute (rpm), and a 20 millimeter diameter saw-tooth generator capable of homogenizing a 1 liter sample into a 1-5 micrometer emulsion at about 7,500 rpm loaded speed. Suitable homogenizers and
generators are available from Omni International Inc., 6530
Commerce Court, Gainsville, VA (800)776-4431, homogenizer part
number GLH-115 and generator part number G20-195ST; or PRO
Scientific, PO Box 448, Monroe, CT (203)452-9431, homogenizer part
number 01-01250 and generator part number 02-20200. A holder or
stand for the homogenizer is recommended.
(b) Sample/homogenizing bottles of 1 liter volume for collecting and
homogenizing NOC or TSP samples. Ensure the opening is large
enough to allow insertion of the homogenizer generator (item (a)).
Wide mouth glass sample bottles with external safety coatings and
Teflon lined caps are acceptable, as are sampling containers
manufactured from Teflon, Teflon lined glass, Teflon lined
plastic, or stainless steel. Suitable containers are available
from laboratory supply houses such as Thomas Scientific.
(c) Graduated cylinders of 50 mL minimum volume with minimum
graduations of 10 mL to measure 30 mL of solvent and 100 mL
minimum volume with minimum graduations of 50 mL to measure 100 mL
of aqueous sample, or 250 mL minimum volume with minimum
graduations of 10 mL to measure 160 mL of solvent and 500 mL
minimum volume with minimum graduations of 100 mL to measure 500
mL of aqueous sample. Cylinders should be glass.
(d) Separatory funnels of 250 mL volume minimum for extracting a 100 mL
aqueous sample, or 1000 mL minimum volume for extracting a 500 mL
aqueous sample. Funnels should be glass.
(e) Beakers of sufficient capacity to collect 30 mL or 160 mL serial
solvent extracts and transfer to the volumetric flask. Beakers
should be glass.
(f) Volumetric flasks, or equal, of 100 mL minimum volume with minimum
graduations of 100 mL to collect the three 30 mL solvent extracts,
or 500 mL minimum volume with minimum graduations of 500 mL to
collect the three 160 mL solvent extracts.
C.6 Reagents.
(a) Navy oxygen cleaner (NOC) in accordance with MIL-DTL-24800.
(b) Tri-sodium phosphate (TSP) in accordance with O-S-642 prepared as
specified in 4.3.2.
(c) Hydrochloric or sulfuric acid (1+1), ACS reagent grade, prepared by
slowly and carefully adding 1 volume of hydrochloric acid (HCl) or
sulfuric acid (H2SO4) to 1 volume of water.
(d) NAVSEA approved halogenated solvent (see appendix E).
(e) HCFC-225s (see appendix E).
(f) CFC-113 (see appendix E).
C.7 Samples.
(a) A 500 to 600 mL NOC or TSP sample shall be collected for hydrocarbon or NVR determination. The sample bottles used to collect the sample shall have been cleaned as specified in C.8.
(b) A 500 mL sample of homogenized NOC or TSP will be used when performing a solvent extraction for post NVR analysis by gravimetric.
(c) A 100 mL sample of homogenized NOC or TSP will be used when performing a solvent extraction for post hydrocarbon oil and grease analysis by infrared spectrophotometry.
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