NEW PRODUCTS
CARVER LABORATORY PRESS
drive is attached to the DU's wave length knob, and the pen drive is at tached to the potentiometer. Then the operator sets each knob as he would normally do and presses the print bar to record a dot whose location on the chart provides the data. The company points out that, since the step of trans posing information to the notebook is eliminated, an important source of errors is removed. It adds that the unit can be assembled to the spectro photometer in a few minutes and that it does not interfere with normal use of the instrument. Connecticut Instru ment Corp. P-12
NEW REVERSE-TAPER Teflon* plug stopcock for custom apparatus Our Special Apparatus
Standard For Research
. . . sofves the pressing problem of forming KBr Pellets Many insoluble matti idk mixed with Potassium Bromide, can be formed m a die under pressure into pellets or waters for quantitative and qualitative analysis.
High voltage power supply, Model N-4035, has plus or minus output of 3 5 0 0 volts at 25 ma. Line and load regulation are 0 . 0 0 5 % , noise is very low, and ripple is less than 5 mv. r.m.s., says the company. It takes 200 watts at 115 volts, 6 0 cycles. Hamner Electronics Co. P-13
The CLP supplies the pressure - up to -10 000 lbs. if needed.
Some of the many uses are: v* Dehydrating u * Pressing out various oils, stéarines and waxes >·* Pressure filtering of thick fluids κ* Compression tests μ * Fatty acid determinations k* Plastic molding, forming and blocking k* Embossing and forcing i ^ Pressing mother liquors from crystals ι** Extracting Vaccines and Viruses The Standard (10 Ton! CARVER LABORA TORY PRESS complete with Gauge Î295.D0
Send for complote catalog.
FRED S. CARVER INC. HYDRAULIC ·. ',
H I V E R
Η Ο Λ ';
EQUIPMENT S 1J M M i Τ
Ν
Circle No. 183 on Readers' Service Card 146 A
·
ANALYTICAL CHEMISTRY
]
self-adjusting stopcock, in 2 or 4 mm bore, to any ware you desire. The reverse taper puts constant spring tension on the plug, sealing it tight against the mirror-smooth glass shell. There are no locknuts or other me chanical devices to adjust, no threads to strip. The plug turns at a touch. You cannot dislodge it accidentally, yet you can take it down in seconds simply by pressing the handle side ways through the spring housing. No contamination—no corrosion. No grease is needed. Only T e f l o n * plastic and b o r o s i l i c a t e glass touch your materials. The rest of the u n i t nylon handle and spring housing, stain less steel spring —is also corrosion resist ant.
This sp'.-.ifir use ib only one of the ways th's versatile laboratory assistant T.rets the challenge of research and development.
20 Ton Models also available - additional Standard Accessories for other applications can be supplied.
Department
can now add this new PYREX® brand
Viscosity unit, the Lab-Vis, enables se lection of any of eight viscosity ranges by turning a switch. The sensing ele ment operates up to 6 5 0 ° F. and 1000 p.s.i., and recorded measure ments can be made in beakers or cir culating systems. Accuracy and re producibility are both said to be bet ter than ± 1 % . The Bendix Corp. P-14
No freezing—no break-away even after long exposure to alkaline solutions. Many PYREX lab items are already available from stock with this new stopcock;t they are listed in the new PYREX labware catalog, LG-2. Write if you'd like a copy. If you don't spot what you want in the catalog, we'll be glad to make it for you, be it a standard item you want added to or a design of your own. *Teflon is a Du Pont Trademark. tU.S. Pat. 2876985 Special Apparatus Section
CORNING GLASS WORKS 6 9 0 2 Crystal Street, Corning, N.Y. C O R N I N G M E A N S R E S E A R C H I N GLASS Circle No. 193 on Readers' Service Card
