New Products

Manufactured by ChemLab (United Kingdom), Tubee's provide sample identification of microcentrifuge tubes, cryovials, test tubes, chromatography samples, and other low-volume laboratory tubes and disposables. These smear-resistant labels have a strong, permanent label adhesive applied to both rectangles and dots, and are suitable for use at low temperatures up to 80°C, making them ideal for both freezer and incubator applications. Tubee's need no special marking device. The Dot Pack contains one reel of 5000 paper dots, 9.5 mm in diameter, with 1000 of of each color: yellow, mauve, red, white, and white pre-numbered 0-9, repeating. The Strip Pack contains one reel of 1000 yellow polyethylene strips measuring 32.5 x 13 mm. Finally, the Combination Pack contains 5000 dots and one reel of 1000 polyethylene strips. For more information call 1-800-528-5114 Millipore announces that the PelliconTM XL 50 tangential flow device is now available with additional molecular weight cutoffs of the low-binding PL series composite UF membranes. The device is now offered with 6 composite regenerated cellulose membranes ranging from 5K to 100K for a variety of process development and sample preparation applications for processing up to 1000 ml. If high-flux is required, the Pellicon XL 50 device is also offered with a wide range of Biomaxª (PES) membranes. For true linear scalability, Pellicon XL devices provide the same flow path, channel length and channel height as Millipore's established Pellicon 2 cassette products. Based on proven UF membrane technology, Pellicon XL ensures reliable, consistent and predictable performance. Primary applications include concentration and desalting of proteins, buffer exchange, depyrogenation, clarification and preparation of material for clinical trials. For more information call 1-800-MILLIPORE The New Streaking Jack Inoculator from Bel-Art Products offers a major improvement over the standard inoculation loop. The Streaking Jack Inoculator provides three streaks at the same time in a recognizable path. These three streaks bring up the growth pattern in the agar in an improved fashion. The Streaking Jack Inoculator is quicker to work with than a standard loop. It is precision molded of polypropylene and is supplied in a sterile package of 25 pieces. They may be re-used after sterilization by autoclaving or they may be disposed of after the first use. For more information call 1-800-4BELART. As cancer and disease studies require correlation of mRNA expression patterns with DNA rearrangements, QIAGEN (Hilden, Germany) RNA/DNA kits offer an important tool to make these studies and others more reliable and efficient. QIAGEN RNA/DNA Mini, Midi, and Maxi Kits are now available for purification of ultrapure RNA and DNA from the same source. Utilizing the unique binding properties of QIAGEN Anion-Exchange Resin in combination with step-wise elution, total RNA, low-molecular-weight RNA (as small as 20 to 30 nucleotides), and genomic DNA can be sequentially isolated from the same sample. For more information call +49-(0)-2103-892-272. Upchurch Scientific's new Frit in a Ferrule offers the ability to create an inline filter any place in your system where a flat-bottom port exists. This simple idea of a flangeless ferrule with a built-in frit alleviates the need to create another connection in your system. Available in Upchurch's standard flangeless ferrule and the Super FlangelessTM ferrule designs. For more information call 1-800-426-0191. Bio-Safe IITM and Econo-SafeTM are ready-to-use liquid scintillation cocktails for counting aqueous and non-aqueous samples. Available from Research Products International Corp. (Mt. Prospect, Ill.), these cocktails contain non-hazardous, biodegradable components that allow disposal as ordinary liquid waste. Both products have a large aqueous volume capacity of up to 25% that remains in the clear region without forming a two-phase separation. Products yield high counting efficiencies with all beta isotopes including 14C, 3H, 35S, and 32P. Bio-Safe II and Econo-Safe are non-regulated combustible liquids with a low vapor pressure that allows unrestricted shipping and storage. For more information call 1-847-635-7330. Designed for optimum performance in gel drying applications, National Labnet recently released the D4000-S vacuum system. Components of this system include a diaphragm pump, one piece dry ice trap, and attachment kit which includes all of the hardware necessary to assemble the system and connect it to a gel dryer, such as the Labnet GD2A. Labnet's D4000-S is environmentally friendly, extremely quiet, and maintenance free. The D4000-S utilizes a dry pump requiring no oil or water. It is exceptionally quiet and requires no lubrication. All pump components that come into contact with solvent vapors are manufactured from Teflon or Kalrez to provide long life and superior corrosion protection. The pump heads are made of solid Teflon to resist peeling and cracking. The dry ice trap is constructed of a single piece of heavy walled glass. The trap prevents liquid from entering the pump and helps to maintain the ultimate vacuum level necessary to prevent rapid drying. The trap has an integral drain port for removing collected solvents. For more information contact Labnet at 1-888-522-6381. The new Microcentrifuge 2400 from Stratagene (La Jolla, Calif.) is a high speed, benchtop centrifuge designed for molecular biology isolation or purification applications, such as the isolation of genomic DNA from whole blood, plasmid, or lambda minipreps; RNA isolation; and mRNA purification. The Microcentrifuge 2400 features a compact design and quiet operation. Other features include a built-in timer for runs up to 30 minutes and a pulse switch for quick spins. The Microcentrifuge 2400 also has an interlocking lid that automatically prevents lid openings while the rotor is spinning. The Microcentrifuge 2400 holds twenty-four 1.5 or 2.0 ml tubes, and the 24-place rotor can be removed for easy cleaning. Convenient Mini Tube Adapters allow the user to convert the rotor to accommodate twenty-four 0.5 ml tubes. For more information call 1-800-424-5444. Brinkmann Instruments (Westbury, N.Y.) recently released two compact, benchtop centrifuges. The Model 5810 and refrigerated Model 5810R accommodate up to 4 x 250 ml bottles or 16 microtiter plates. As an example, these centrifuges achieve a throughput of up to 36 x 15 ml or 12 x 50 ml conical tubes. Stackable, modular adapters provide proper support for a wide variety of tubes, and high speed fixed angle rotors for tubes from micro to 85 ml may be interchanged for application versatility. The variable speed, maintenance-free motor of the 5810 spins up to 14,000 rpm (20,800 x g) and automatic rotor recognition senses rotor type to set maximum allowable speed to ensure safety during operation. Self-diagnostics alert the user of improper operating conditions. Refrigerated Model 5810R provides accurate temperature control with CFC-free refrigeration and a temperature control range of -9° to 40°C. A Fast Cool function pre-cools the rotor in as little as 15 minutes, and standby refrigeration keeps the rotor chamber at set temperature while the lid is closed. For more information, contact Brinkmann Instruments at 800-645-3050. Mikura (United Kingdom), a new company dedicated to the development and marketing of microplate instrumentation, announces a new microplate washer to meet the most demanding laboratory requirements. The compact design enables the user to purchase specific modules to suit individual needs. Modules available include a microplate workstation, reservoir kit, pump module and a choice of 8 or 12 plate manifolds. The workstation incorporates a manifold-priming trough, and all fluid pathways are autoclavable. An external power supply caters for all power variants. For more information call 44-(0)-1206-274070.

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October 1997

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