BIOFUTUR 283 • DÉCEMBRE 2007 62
SI VOUS SOUHAITEZ PARTICIPER À CETTE RUBRIQUE Merci
de contacter José Fernandez au 01 48 67 20 51 ouj.fernandez@
infomediapublishing.fr
through repeated threading and unthreading, the Click-N-Seal prevents over tightening, stopping at the specified torque every time.
When paired with Diba’s Flared Tubing Assemblies, Torque Right fittings with the Click-N-Seal connec- tion produce a continuous, fully swept Fluoropoly- mer fluid path with a consistent internal tubing diameter in sample, reagent, wash, waste and other types of lines. These tight connections greatly reduce or eliminate dead volumes and carryover problems.
Click-N-Seal connections are available with a stan- dard 1/4-28 thread size fitting in three colors for easy connection coding and identification. Custom confi- gurations with Diba’s Flared Tubing Assemblies are also available; customers may specify tubing mate- rial, inside diameter (I.D.) and outside diameter (O.D.) of up to 1/8”.
For further information: www.dibaind.com
Level Sensing Probes Ensure Smooth Processing Diba’s aspirate and dispensing sensing probes moni- tor empty and full conditions.
For automatic control in analytical ins- truments, Diba’s Conductive Level Sen- sing Probes monitor liquid quantity, notifying system software when pro- cessing fluid bottles have reached full or empty states. In addition to allo- wing instrument software to detect and react to system status, Diba’s fluoro- polymer lined aspirate and dispense probes provide an inert, consistent fluid path with no possibility of leaks from tip to pump.
Diba’s Level Sensing Probes accurately monitor sample levels in cuvettes, as well as waste, reagent, and buffer solu- tions, providing analytical instrument software the information needed to direct system changes. Depending on the application, information from the probes can be used by the system to automatically stop processing until rea- Diba’s Click-N-Seal™ Connection Tightens Consistently
Hand tightening fluid connection fittings is typically a guessing game; most specify “finger tight”, a sub- jective measurement that varies by person and finger strength. Guessing wrong and over tightening a fit- ting can result in poor fluid connections and leaky processing. Diba Industries’ patent pending Click-N- Seal™ connection fittings, part of its Torque Right™
line, eliminate this process variable. The reusable fit- tings provide objective feedback that the required torque for a proper seal has been achieved, and pre- vent excess torque.
Tightening of the preassembled Click-N-Seal increases resistance against the installer's fingers until the cor- rect torque is reached. The connection then clicks and further turning of the fitting does not increase the force applied. The installer can feel and hear the click that indicates the fitting is properly seated, and the Click-N-Seal physically prevents any tightening beyond that point. This audible and tactile indicator lets the installer hand tighten fittings without tools (such as a torque wrench), or guesswork. The ergo- nomic design results in less strain on the user, elimi- nates installer error, speeds field service times and facilitates training.
The fitting is designed to be unthreaded by simply turning it backwards, and can then be reused. Even
© DR © DR
gent or buffer solution is replenished or a waste bottle is emptied. The compact probes require only a simple electrical connection and have no moving parts to fail, resulting in more reliable operation when compared to the bulky float switches traditionally used for level sen- sing.
The inner diameter of Diba’s stainless steel probe can be lined with PTFE or FEP fluoropolymer tubing to create a single inert fluid path, eliminating the possibility of unwanted chemical interaction and the potential intro- duction of air along the entire length of the tube. The design reduces carryover and improves wash capabilities, retaining the necessary flow characteristics for efficient system performance.
Conductive Level Sensing probes are available in a variety of standard sizes or custom configurations, operating as either aspirate only or dispense only probes, or as com- bination aspirate/dispense probes. Customers can spe- cify probe material, inside diameter (I.D.) and outside diameter (O.D.) with flush, angle cut or protruded tip designs. Diba’s technical staff is available to assist in spe- cifying configurations suited to any application.
For further information: www.dibaind.co
Nouveaux produits
13-nouvprod283 16/11/07 10:26 Page 62
Cet article des Editions Lavoisier est disponible en acces libre et gratuit sur biofutur.revuesonline.com
