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Potters Spray Tower

Submitted By:

Umair Faheem,

2003-ag-32

M.Sc. (Hons.) Agri. Entomology.

Submitted to:

Dr. Shafqat Saeed,Assistant Professor,

Agri. Entomology.

Potters Spray Tower

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The Potter Tower is internationally recognised as the standard of reference for chemical

spraying techniques in the laboratory. This type of apparatus is required for studying the

biological effects of contact poisons on organisms.

Benefits include: Proven Reliability

Increased Safety

Smooth Pneumatic Cycle

Easy Clean Construction

Two models are manufactured a model with a safety automatic

load/unload facility. Each instrument has similar spray

performance characteristics and is designed to apply precise

and uniform deposits of spray over a circular area of 9cm

(3.54") diameter.

The Tower incorporates developments from the Rothamsted

Experimental Station (AFRC - Harpenden, Herts, England) and

includes quickly detachable atomizers and a pneumatically operated spray table, with all

controls mounted conveniently at the front. A 0-2.5 BAR 10cm/4in.dia. 0-30 lb/sq in,

pressure gauge is fitted as standard. A laboratory scale compressor unit and a manometer are

also offered as optional equipment.

Construction and Equipment Details

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Frame: Manufactured from extruded Aluminium Alloy section in pleasing self colour

finish of light and durable construction.

Spray Table:Precision made Aluminium Alloy spinning with high finish internally and matt

external surfaces, positioned centrally by three screws mounted on the

intermediate platform.

Nozzles: Units supplied in pairs as standard equipment for Intermediate and Finalspraying. Manufactured to close tolerance giving an accurate spray formation,

with stainless steel jet and pick-up tube. Fully adjustable assembly for level and

centralising over the spray tube.

Spray Table:Adjustable for height within the piston of the air cylinder and fitted with

eccentrics to the test platform for positioning the specimen dish beneath the spray

tube.

Air

Pressure:

Constant supply of 1.5 - 2 kg/cm2 through the input connection controlled by an

on/off switch and exhaust valve. Fine adjustment is made by a sensitive needle

valve on the left hand side of the instrument giving direct reading on the pressure

gauge, or manometer (which is supplied as an extra). This pressure operates the

air jack and nozzle head simultaneously.

Manometer: Provision is made at the rear of the instrument to accommodate the use of a

manometer if required. Level Four screwed feet in the base of the instrument

provides easy levelling in conjunction with the spirit level on the intermediate

platform.

Specification

Potter Spray Tower Manual Auto-load

Spray tube diameter (Top)15.7 15.7

Spray tube diameter (Bottom) 11.9 11.9

Spray Tube length 69cm 69cm

Max. diameter of specimen dish 11cm 11cm

Max working pressure supply2.1 bar

(30lbs/sq.in.)

2.1 bar

(30lbs/sq.in.)

Operating pressure 15lb/sq.in. 15lb/sq.in.

Standard sample reservoir capacity 12cc 12cc

Height 120cm 120cm

Width 36cm 36cm

Depth 36cm 36cm

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Ship weight

Net 21.4Kg 28Kg

Gross 43Kg 49.5Kg

Case size 51X51x153cm 51x51x153cm