32 A
ANALYTICAL
LUMETRON
CHEMISTRY
Photoelectric
COLORIMETER MOD. 402-E
EBERBACH LABORATORY SHAKERS • nephelometry requiring no turbidity standards • use with monochromatic glass filters including interference filters of 15 millimicrons width • sample holders with 0.1 to 1 5 0 mm light path • use with microcells and full-length test tubes • high stability due to balanced photocell circuit • ultraviolet absorption with mercury vapor lamp Accessories available for measurement of fluorescence and for reflection tests on pastes, powders, and opaque liquids
Featured model of the line Is shown above shaking a 5-gallon bottle. It's the utility box carrier mounted on a variable speed power unit. Silent and smooth operating, mounted on suction cup rubber feet. There's a model to do your shaking job—3 styles of carriers interchangeable on the 4 bases which have different speed characteristics. Our literature shows them all. SEND FOR BULLETIN 100-D
Write for J 5-page Bulletin #420 to
PHOTOVOLT CORPORATION 9 5 Madison A v e . New York 1 6 , Ν . Υ. Fluorescence Meters, pH Meters, Reflection Meters, Glossmeters Densitometers, Electronic Photometers lor Microptiotometry
LQBUBDTOBU PFPnBQTiJS
Eberbach &son company ε- SUPPLIES
ANN ARBOR, MICH.
fSTABUIMD 1 8 4 9
NYLAB llt&una? M A G N E T I C STIRRER • H O T P L A T E Combined! • S t i r s — H e a t s : Operates on either steam or compressed air to effect stirring at steambath- or room-temperature, providing a simple, effective means of performing evaporations, hot or cold digestions, sim ple stirring operations, etc. • S a f e : No electrical components! Ideal for use with inflammable, volatile solvents and in hazardous locations. • E x p e d i t i o u s : Eliminates time-consuming assembly of separate implements for stirring and heating. • L a r g e S u r f a c e : Supports 2 liter beaker and most of the larger flatbottomed vessels used in the laboratory. • S q u a t a n d H e f t y : The squat, hefty design of the T H E R M A G means slability—freedom from toppling and sliding. • S m o o t h O p e r a t i o n : "Oilite" bearing and ball suspension, mounted within the rotor at its center of gravity, provide smooth rota tion. Weight of rotor irons out transient variations in air or steam pressure. • Heavy, D u r a b l e C o n s t r u c t i o n : Constructed from machined aluminum castings with aluminum alloy, brass and stainless steel com ponents, the T H E R M A G is built for long, continuous service: it will withstand abuse.
No. 22600 NYLAB T H E R M A G , complete with one each 6/t" and 1" Pyrex-enclosed stirring magnets and one each 5 /s" and 1" polyethylene-enclosed stirring magnets.
$42.50
NEW YORK LABORATORY SUPPLY CO., INC.NfflliUBi
76-78 V A R I C K S T R E E T
NEW Y O R K 13, N.Y.
