BRONWILL
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CONSTANT TEMPERATURE CIRCULATORS Pumps and circulates . . . converts any suitable container to a constant temperature bath.
FEATURING: temperature controlled to 0 . 0 1 ° C — r a n g e Oto 100°C long life brushless induction motor accurate magnetic control of temperature settings internal r e l a y — n o separate relay box up to 2 y 2 gpm 12L/min) controlled circulation additional reading thermometer provided
HEATS · CIRCULATES · CONTROLS TEMPERATURE T h i s new a n d improved model instantly con verts a n y suitable container to a n efficient, closely controlled, constant temperature bath or circulating system. One light, portable unit provides the motor driven stirrer and p u m p for circulating, a 750 watt heater element, a read ing thermometer, a magnetic setting thermomi.'ter-thermoregulator a n d a double transistor relay. With mounting rod for a t t a c h m e n t to any laboratory stand. Literature
on
Request.
accessory cooling coil available
And the BRO Ν WILL
MODERN
DESIGN
WARBURG APPARATUS Circular shape and small diameter (20Vi"). conserves space, permits locating unit against a wall or in a corner. Rotates through 320" to bring any manometer in front of the observer for reading. Fourteen manom eter positions are provided. • •
Designed for compactness—operates on any laboratory bench. Magnetic thermoregulator adjustment—temperatures 0 to 50°C present in minutes. • Unique double capillary manometers-stronger and easier to read. • Electrode heating system-lagless—no overshooting. Reaches operating temperature in 20-30 minutes. • Interchangeable factory calibrated manometers and reaction vessels available. • Temperature constancy plusor minus 0.01 r C. FOR PHOTOSYNTHESIS - M O D E L UVL . . . CAT. NO. 1 0 Bath chamber is transparent Plexiglas through which the light is trans mitted from fourteen 40-watt tungsten filament lamps, mounted on the oscillating manometer platform directly below the reaction Masks, The distance between light source and reaction flask remains constant. Concentric-mounted fan to dissipate heat from the lamps is positioned so that the blades do not pass through light beam between lamp and flask. Special cowling shields the observer from direct light, facilitates reading the manometers.
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D I V I S I O N
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SCIENTIFIC W I L L
C O R P O R A T I O N
P. 0 . BOX 3 9 2 7 · BRIGHTON STATION · ROCHESTER 10, Ν. Υ.
Circle No. 43 en Readers' Service Can!
VOL. 32, NO. 10, SEPTEMBER 1960
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