MIL-STD-1330 Precision Cleaning And Testing Of Shipboard Oxygen, Helium, Helium-Oxygen, Nitrogen, And Hydrogen SystemsThis standard provides the requirements for precision cleaning and testing of oxygen or oxygen-enriched systems and components; oxygen generating plants including nitrogen, hydrogen, and demineralized water support systems and components; and helium, helium-oxygen, and hydrogen life support systems and components. Each activity will implement the applicable requirements of this document through a locally prepared and approved procedure. Activities subject to additional quality assurance requirements such as NAVSEA SS800-AG-MAN-010/P-9290 or NAVSEA SS521-AA-MAN-010 will obtain procedure approval from the applicable certifying activity.

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MIL-STD-1330D(SH) APPENDIX D

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FIGURE 4.  Cross-sectional view of evaporating dish.

c.    A hot plate adjustable to about 90 and 100 °F with an accuracy of ±5 °F.  Note that many hot plates are not adjustable to these low temperatures, they don't provide adequate accuracy, and adjustable plates with digital temperature readout are costly.  An acceptable hot plate is Corning catalog number 440918 available from laboratory supply houses such as Fisher Scientific.  This hot plate has a remote control that provides the required adjustability.  Rather than a digital readout of temperature, it provides a digital readout of the heat setting to the

nearest 0.1, with a maximum setting of 10.  Many hot plates are only adjustable in increments of 1, with a maximum setting of 10.

d.    A washing bottle used for spraying solvent for final cleaning of glassware and displacing water from the evaporating dishes.  The bottles must not extract organics and must be compatible with the solvent, such as Teflon or glass.  An acceptable washing bottle is VWR Scientific catalog number 16651-880.

e.    Glass pipet with a capacity of 0.5 mL for measuring laboratory standard.  Suitable pipets are available from laboratory supply houses such as Fisher Scientific or VWR Scientific.

f.     Pipet filler/dispenser.  Fisher Scientific catalog number 13-683B is acceptable.

g.    Glass beaker with a capacity of 10 mL for transferring laboratory standard to evaporating dishes.  The

small size is necessary to minimize solvent evaporation.  Other suitable beakers are available from laboratory supply houses such as Fisher Scientific or VWR Scientific.

h.    Non-abrasive, heavy-duty, reinforced paper towels for cleaning evaporating dishes.  Kimberly-Clark P/N

34865 available from Fisher Scientific catalog number 06-666-14A is acceptable.  If available, stock number 7920-

00-823-9773 per A-A-1432, Type IV, is acceptable.

i.     A clean container for mixing detergent for cleaning evaporating dishes.  An appropriate size is about 5½ inches square and 3 inches deep with an open top.  This size allows use of minimum cleaner and adequate access for cleaning by hand.  Any commercially available type is acceptable.

j.     A thermometer capable of reading a surface temperature of 90 and 100±2 °F.

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