WATER DISTILLATION EQUIPMENT

e. Surgical Instruments, at least 15 kg 32 pounds, including

retractors, forceps, and hemostats.

2.13

WATER DISTILLATION EQUIPMENT

2.13.1

Laboratory Distilling Apparatus

Laboratory distilling apparatus shall produce distillate free of pyrogen

and containing not more than 1.0 ppm total solids, with a pH value of 5.4

to 7.2, an electrical resistance of not less than 300,000 ohms per

centimeter (ohms/cm) at 25 degrees C 77 degrees F. Distilling apparatus

shall be passivated stainless steel, tin-coated copper or tin-coated copper

alloy, or titanium. Parts of copper or copper alloy in contact with water

vapor and distillate shall be coated with tin 0.025 mm 0.001 inch thick,

minimum. Valves, tubing, and fittings shall be passivated stainless steel,

tin-lined copper, or tin-lined copper alloy. Exterior surfaces of copper

shall be polished nickel or chromium plate. Tin lining in piping, tubing,

valves, or fittings shall be 1.6 mm 1/16 inch thick, minimum. Distillate

collector, still body, and condenser shall be stainless steel. Metallic

surfaces in contact with distillate shall not contaminate the distillate.

2.13.1.1

Recording Conductivity Meter

A meter shall monitor water quality and include an automatic diverter

device to discharge effluent to waste if the effluent is not of acceptable

purity. The meter shall be the electronic indicating and recording type

operating on 120-volt, single-phase, 60 Hz current. Meter shall be

suitable for wall mounting. Solid-state electronic circuitry will be

acceptable. Indicator shall be a horizontal scale approximately 150 mm 6

inches long with easily read graduations and a prominent mark at the point

of minimum quality. Recorder shall be 30-day strip chart type which prints

by a stylus against pressure-sensitive paper. Conductivity cell electrodes

and automatic temperature compensating thermistor shall be contained within

a glass or titanium body secured between the adapter and draw-off cock to

register and record the quality of the distillate at the outlet of the

still at all times. Meter shall have a cam switch to actuate a solenoid

valve which will divert water with less than 300,000 ohms/cm resistance to

waste automatically. An alarm shall sound when water is discharged to

waste. The alarm shall be provided with a manual shut-off. One year's

supply of pressure-sensitive strip chart paper shall be provided.

2.13.1.2

Additional Equipment

Additional equipment shall include thermostatic steam trap, check valve,

automatic steam pressure regulating valve, pressure gauge, steam supply

valve, water supply valves, and water pressure regulator.

2.13.1.3

Disassembly

Major components of the still, including the condenser, shall be easily

disassembled and reassembled for cleaning and maintenance.

2.13.1.4

Mounting Devices

All parts of mounting bracket devices, including bolts and screws for

securing brackets to wall, shall be stainless steel or welded steel with a

corrosive resistant finish.

SECTION 11710

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