NEW PRODUCTS and wrapped in polyethylene. Com pany claims noncorrosive reaction to all tests. Chicago Apparatus Co. P-69 Radiation Shield. Model 800D has four separate stacked sections to form various complete units for thin-window flow, geiger, and scintillation counting. Measures 13 V* X 10 V* X 10 1 / i inches and gives minimum 3-inch iron shield in all directions. Baird-Atomic, Inc. P-70
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TIME · SPACE · MONEY WITH
*€E MINI-LAB The Most Popular Line of Custom-Engi neered, Interchangeable Small-Scale Glass w a r e in existence. M a n y items are equipped with 3 18/9 Joints as well as the Popular | 1 4 / 2 0 .
Here is a n Extremely Versatile Distillation Assembly consisting of several " M i n i - L a b " Components. And — these s a m e compo nents lend themselves to a variety of uses. Ace stocks countless interchangeable as semblies a n d components. The individual user can readily develop i n n u m e r a b l e var iations of basic assemblies by using the m a n y items available.
" M i n i - L a b " uses only m i n i m u m a m o u n t s of your costly ingredients, a n d its compact ness saves countless square feet of valu able lab space. Ask Dept. M L - F t o send you the " M i n i - L a b " Brochure.
ACE GLASS INCORPORATED VINELAND
NEW
JERSEY
LOUISVILLE, ΚΥ., Box 996
Circle No. IS on Readers' Service Card
98 A
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ANALYTICAL CHEMISTRY
Glassine Wraps. Blue-tinted trans parent wraps are said to be easily sealed, and can be autoclaved at high temperatures under high pressure. Available in various sizes and odd shapes for such things as pipets, petri dishes, and instruments. Scientific Products. P-71 R-l-E Meter. No. 5620 Multimeter is for testing where unusually stable measurements of resistance, current, and voltage are needed. Has self-con tained power pack for 10 or 100 volts, or external battery up to 500 volts may be connected. Leeds & Northrup Co. P-72 Electropolisher. No. 6501 electropolisher uses the metal to be polished as the anode of an electrolytic cell. Continued solution of the metal pro duces a smooth, bright surface. Etch ing and polishing can be done in one operation. Shandon Scientific Co. P-73 Data Logging System. Datex k-120 provides digital recording of up to three decimal digits on adding machine tape, from various makes of self-bal ancing potentiometers. Datex Corp. P-74 Pyrex Glass Drainlines. Offered to analytical laboratories because of its resistance to more chemicals than any other piping material, says the com pany. Available in diameters from one to six inches. Fisher Scientific Co. P-75 Microvoltmeter. Model MV-27D d.c. microvoltmeter has 250 microvolts full scale sensitivity, with a high range of zero to one kilovolt. Has 14 ranges, 250 microvolts to 2.5 millivolts with midzero and 10 millivolts to one kilovolt with left zero. Millivac Instru ments. P-76 Optical Gage. Model DR-25 has con tinuous measuring range from zero to three inches. Measurements are shown on illuminated magnified scale gradu ated in least-reading intervals of 0.0001 inch. Accuracy, 0.000025 inch. Bausch & Lomb Optical Co. P-77
