Product Capsules
BEL'-A-iFtT
• GAS WASHING • GAS SAMPLING GAS GENERATING GAS WASHING BOTTLE
Chromatographs, liquid. New high pressure unit with modular equipment.
Ρ 40 Chromatographs, liquid. Dial in any flow rate up to 200 ml/hour, up to 5000 psi, regardless of viscosity changes.
Ρ 188 Chromatographs, liquid. Low-cost, simple, functional, easy-to-use unit. Modular design enables user to upgrade easily. Ρ 189 Chromatographs,
thin
layer.
Two
styles for quantitative control of sam ple streaking for TLC, preparative layer, and paper chromatography. Bulletin. Ρ 170 Chromatographs, TL. Catalog fea tures TLC and electrophoresis instru ments and supplies. Ρ 34 Unbreakable graduated 250 cc polypro pylene bottle with tip-proof round base. Top is leakproof screw cap with VA" O.D. polyethylene tubes for entrance into gas dispersion chamber and exit for washed gas. Gas is dispersed through porous polyethylene dispersion tube with an average pore size of 35 microns. This is an application of our micro-por ous polyethylene which is available in a complete line of filtering apparatus in cluding funnels, extraction thimbles, crucibles, tubes, immersion filters, discs, sheets, etc.
Chromatographs, TLC. 32-page book on properties, applications, bibliogra phy. Ρ 65 Chromatography accessories. Sup ports, adsorbents, applicators, other products for gas, liquid, TLC. Ρ4 Chromatography accessories. 48page catalog on GC supplies and ac cessories. Ρ 39 Chromatography accessories. Precoated plates for TLC and other prod ucts for chromatography. Ρ 85
GAS SAMPLING TUBES Chromatography gels. 2 new groups of controlled-pore-size materials : silica gel and polyvinylacetate. Ρ 145 Unbreakable polyethylene gas sampling tubes with polyethylene stopcocks at each end . . . in two sizes 125 cc and 250 cc. Stopcocks have 3 mm bore and accept VA" I.D. tubing. Now available with septum.
GAS GENERATING FLASK Excellent unbreakable flask for student and laboratory use in gener ating gases such as hydrogen and carbon dioxide. Flask and this tle top are of polypro pylene. Tube of poly ethylene. VIKEM" Stop per is of flexible vinyl. Flask has capacity of 500ml; tubes VA" O.D. See your nearest laboratory supply dealer. Send for our NEW 88 page catalog 723. For your FREE copy write Dept. A-3
BEL-ART PRODUCTS PEQUANNOCK, N. J. 0 7 4 4 0
Densitometers. Complete systems from simple analog conversion to com plete computer-controlled systems.
Ρ 98 Dessicants. Dries air and gases to terminal dryness of 0.005 mg per liter of gas. Ρ 84 Detectors, GC. Two units—from lowcost which provides automatic sampling and designed-in compatability to ad vanced model permitting choice from 13 separate systems. Ρ 176 Diffractometers. Analyzes up to 35 samples automatically, has computer ized data handling system. Ρ 147 Electro balances. Two new ultrasensi tive, variable temperature, magnetic susceptibility systems, operating in air or vacuum. Ρ 41 Electrometers. Vibrating rccd unit de tects currents of 10~17 ampere, charges as small as 5 X 10 -16 coulomb. Ρ 29
CIRCLE 2 5 O N READER SERVICE CARD
112 A ·
ANALYTICAL CHEMISTRY, VOL. 44, NO. 3, MARCH 1972
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Evaporators. Bulletin on unit for si multaneous concentrations or evapora tion of 10 samples in 10-20 minutes.
Ρ 59 Evaporators. Rotary vacuum unit has high torque motor, 30-350 rpm range, stepless speed control. Bulletin. Ρ 161 Filters. New equilibrium dialysis sys tem speeds up handling and determina tion of binding parameters. Ρ 115 Flowmeters. Easy-to-operate units provide easy flow rate determination of hydrogen, nitrogen, helium, or air. Ρ 166 Fraction collectors. Two compact units provide drop, time, and volume methods of collection. Bulletin. Ρ 60 Gases. Helium gas for use with chro matographic separations. Ρ 16 GC/MS system. Links mass spectrom eter and computer for data acquisition and analysis. 3 models. Ρ9 Hot plates. New unit has fast heatup, operating temperatures to 371°C, ac curate temperature control. Catalog.
Ρ 177 Integrators. Electronic digital unit suitable for GC, standard, and high speed liquid chromatography. Catalog.
Ρ 93 Integrators. New system brings full automation to any gas or liquid chromatograph, handles up to 4 chromato graphs simultaneously. Ρ 119 Integrators. Unit can resolve lasersimulated pulses in as short as 10 nano seconds. Ρ 153 Ion exchangers. Five different tridges for water purity, in 2 sizes, need for varying levels of purity. chure.
car meet Bro Ρ 91
Ion papers. New indicators in strip form for metal ions. Ρ 146 Lasers. New drop-in dye cassettes or static dye cells give tunable laser specs. Ρ 90 Lamps, hollow cathode.
Wide variety
to fit any AA spectrophotometer. Ρ 22 Lattices. Adjustable frameworks for apparatus assembly. Standard sets make up to racks measuring 2' X 2', 2' X 4', 4' X 4', 4' X 6'. Ρ 71
