HOT-WIRE GLASS-TUBING CUTTER THE Anyone Can Make Quick Clean Cuts with this Hot-Wire Tubing Cutter ANALYST'S COLUMN L.T. HALLETT, Science Editor
T A M E S K. IRVING, director of public in-
*' formation for the Scientific Apparatus Makers Association, Chicago, has written a booklet about quality control and research for those who may feel that they cannot afford their own laboratory to control and improve their product by scientific methods. We found the booklet interesting and we condense it here. You may find it informative because you have never questioned the importance of research and quality control. Volume buyers on the American scene are constantly increasing their demands upon the manufacturer for goods that are produced according to specifications. . . . T h e increased competition for the consumer's dollar is making it practically imperative that even the smallest processor or manufacturer take cognizance of the growing technology around him. . . . Actually, what is laboratory quality control? What is research? Perhaps more than anything else, it is a state of mind that guides your thinking as a modern business executive. I t cannot be expected to work miracles for you or make you or your product a success overnight. It is not the answer to all of your problems. I t is a profound management and marketing tool, if used wisely, to augment and supplement the experience you have already gained through the years by constantly attempting to produce a less expensive and better quality product for the ultimate consumer. Scientific laboratory quality control assures the intelligent user of the following: 1. Control over raw materials through the setting of specifications. 2. Control over and improvement of production quality. 3. Constant development and improvement of formulas, and methods resulting in cost savings. 4. Control of the finished product. 5. Increased order and better housekeeping in your plant. 6. Improved customer acceptance of your product through greater confidence in a uniformly high quality piece of merchandise. Research, on the other hand, slowly evolves from the "service" aspect of the above virtues of quality control. The particular "know-how" of your technical personnel and the "tools" already on hand for laboratory control of your product can easily be adapted to research—time and personnel permitting. But, the fact remains that the wise introduction to research in your operation per se should slowly and maturely evolve from the intelligent administration of a sound and worth-while laboratory service program in your plant—scientific quality control. VOLUME
2 7 , N O . 1, J A N U A R Y
Glass tubing, bottles, or jars up to 3 inches in diameter can be cut neatly and quickly with this cutter. Soft glass, Pyrex-braud glass, or other hard-glass tubes can be cut with equal ease. The article is first encircled with a scratch made by a cutter wheel conveniently mounted on the side of the transformer, the scratch is heated by contact with the hot wire, and then cooled quickly by applying water or by blowing on it. No other equipment is required.
The cutting wire is supported on two insulated posts and is heated by curent from a 12-volt transformer serving as the base. No. 24 (B & S gauge) nichrome wire is used and is easily replaced. Three extra wires are included. By means of an adjustment on the transformer, the ct rrent can be controlled to give the optinmum heat for whatever type of glass may be used. An instruction plate is mounted near this control. The unit operates on 115 volts, 50 or 60 cycle A.C. Over-all dimensions are 0x4'/2x9 inches high.
Each, $27.50
No. 5 2 1 0 .
W . M. WELCH SCIENTIFIC COMPANY DIVISION OF W . M . WELCH MANUFACTURING C O M P A N Y
ESTABLISHED 1 51 5 Sedgwick Street.
Dept. A - 1
1880 Chicago 1 0 , Illinois, U. S. A .
Manufacturers of Scientific Instruments and Laboratory Apparatus For further information, circle number 15 A-1 on Readers' Service Card, page 43 A
600 grams
1000 grams
HIGH CAPACITY . . . FINE TOLERANCE . . . SINGLE-PAN
ANALYTICAL BALANCES The w e l l known s t a n d a r d m o d e l o f the METTLER a n a l y t i cal b a l a n c e has a c a p a c i t y o f 2 0 0 grams with an accuracy of ± 0 . 1 mg. Two new models representing the soundness of METTLER design a n d p r o v e n excellence o f METTLER manufacture a r e now a v a i l a b l e f o r d e l i v e r y f r o m stock. They h a v e c a p a c i Write
ties of 6 0 0 grams and 1,000 grams respectively, and incorporate the basic features of the METTLER analytical balance: single-pan design, beam with constant load, weights handled by dials and recorded on a counter. The optical scale reads easily to 0.1 mg by means of a vernier. Accuracy is ± 0 . 1 mg.
us for further details of construction,
for prices and list of
dealers.
METTLER I N S T R U M E N T CORP. HIGHTSTOWN N.J. For further Information, circle number 15 A-2 on Readers' Service Card, page 43 A
1955
15 A
