high efficiency couplings amino acid is pre-activated in the vial by the addition of base solution. then the active hobt-ester is transferred to the reaction vessel and a highly efficient coupling ensues. 2 independent reaction vessels the tribute™´s reaction vessels are compley independent. synthesize any 2 peptides simultaneously at different scales and using different programs for each cycle! 101 unattended couplings the tribute™´s amazingly compact amino acid rack can perform over 100 couplings without reloading! perfect for long peptide synthesis. click here for video of amino acid rack full-color chemical-resistant touchscreen compley revolutionary, this cutting-edge feature makes software operation a snap, and with no external computer, the tribute™ saves you valuable lab space as well! click here for video flexible fluid delivery (top-down or bottom-up) the tribute™ is compley flexible. choose top-down or bottom-up deliveries depending on the properties of your reagent. click here for video adjustable nitrogen and vortex mixing the tribute™ features fully adjustable nitrogen and independently adjustable vortex mixing. enjoy high coupling efficiencies with great mixing! barcode scanning of amino acid vials loading amino acid vials is a snap with this feature! just scan, load, and press the forward button! click here for video user logging the tribute™ provides different levels of security for different users with its login screen. ■ system access limited to authorized individuals ■ user id and password provide an electronic signature for each user ■ users may login as an administrator, designer or runner personalized user databases individual users can cr-eate their own programs and peptide sequences that can only be accessed when they are logged in. files can be cr-eated on the tribute™ or on an external computer and transferred to the tribute™ via a portable usb drive: notification feature have the tribute™ send an to your computer or cell phone at a specified program step, at the beginning of each cycle, or when an error occurs. safe response feature the tribute™ can rinse and drain your reaction with a solvent of your choice if your synthesis is interrupted for any reason. automated cleavage the tribute™ can deliver tfa to the reaction vessel from a solvent bottle or an amino acid vial. afterwards, collect your cleaved peptide in a 50 ml centrifuge vial in the tribute™´s convenient collection stand. just add ether directly to the collection vial and centrifuge to precipitate your peptide! automated cycle dependent volume incrementation the tribute™ can automatically adjust delivery volumes to account for resin volume increases as your synthesis progresses. delivery volumes will increase by an increment of your choice each cycle. synthesis scale: | 0.010 mmol to 2 mmol (up to 2 g of resin) | reaction vessels: | 2 (10 ml, 45 ml) | chemistry: | solid phase synthesis (e.g. peptide, peptoid, pna, dna, combinatorial, small organic molecules) | activation schemes: | in-situ; experimental | reagents/solvents: | 5 pressurized solvents (1 to 4 l each) 101 position amino acid rack, barcode scanning of amino acid vials | fluid measurement: | fixed loop measurement with optical sensors | solution transfer: | nitrogen or argon pressure. top down or bottom-up deliveries. | solution removal: | filtration | waste container: | (20 l) with float switch | agitation: | nitrogen bubbling and vortex mixing - adjustable | interface: | proprietary tribute control software, internal cpu, full-color chemical-resistant touchscreen | power: | 115/230 volts, 50/60 hz | dimensions: | 43 inch wide x 23.2 inch height x 25.4 inch depth (109 cm w x 59 cm h x 64 cm d) | weight: | approximay 100 lbs. (45 kg) | warranty: | one year, parts and labor | additional features: | automated cycle dependent volume incrementation safe response feature | optional: | user workstation utility notification cleave/collect assembly | |