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LCTECH / GPC PRODUCT LINEGPC ULTRA PROCESSThe GPC components include an autosampler, precisionpump and valve injection system, a sample loop, anda matched GPC column. The concentration portion iscentered on a uniquely designed evaporation chamber supportedby vacuum and chiller hardware. The optional PCsoftware controls and monitors the operations and enableseach individual sample requirements programmed in foroptimal recoveries.AUTOMATED PROCESSES• Injection Of The Sample (26 Or 52 In Series) Via RobotNeedle And Sample Loop Onto The GPC Column• Clean-up Of The Sample Via Gel PermeationChromatography (GPC)• Transfer Of The Main Fraction Into A Laser ControlledVacuum Chamber• Online Concentration Of The Column Eluate Under VacuumWith Final Volume Controlled To A Precise 5 mL Or 2 mL WithInternal Standard• Aliquotation In Up To Three Vials• Rinse of Needle Loop, Ports, Vacuum Chamber, And All Tubing;Eliminating Carry-overGEL PERMEATION CHROMATOGRAPHY PROCESSESThe autosampler has multiple rack congurations forexibility in sample processing. Sample vials are availablewith a patented septum technology that, together with thesuperior injection needle design, virtually eliminates solventloss. The sample loop is designed for precise sample size andrinsing to eliminate carry-over. Using the optimized GPCcolumn from LCTech provides consistency and reliabilityfor the separation function.RotatingFlaskUpper LaserLower LaserCONCENTRATION PROCESSESAt the heart of the GPC ULTRA is a specially designedsealed evaporation chamber that is laser controlled andextremely accurate. Utilizing the best features of rotary vacuumevaporation designs, the chamber has been optimizedfor accurate automated measurement of nal sample.This concentration/evaporation feature can also be used asa stand alone process without the GPC clean-up.The evaporation chamber is designed with a 2 mL reductionchannel in the bottom of the chamber. This uniquefeature allows the lasers to measure across the small diameterchannel very accurately. The lasers use a proprietaryalgorithm to precisely identify the correct solution level.AUTOMATED CONCENTRATOR• Concentration Of Any Volume (250 mL) To A Precise FinalVolume Of 5 mL Or 2 mL W/ Internal Standard• Single Or Multiple Solvent Exchange Options/Settings• Quantitative Transfer Of The Concentrate Into The Initial Vial ForFurther Clean-up Purposes• Concentration To Dryness And Subsequent Dissolution• Dilution Of The Concentrate• Aliquotation Of The Concentrate Into Sealed Vials• Process For Samples With Internal Standards• Speeds Up Processes For A Faster Sample Preparation• Solvent Resistant Flow Path Of Glass, PTFE , Stainless SteelSYSTEM COMPONENTS• LCTECH GPC COLUMNThe specially designed GPC column is DIN-compliant filled withS-X3 Bio-Beads, 200-400 mesh. The column construction isglass and PTFE, 1/8” PTFE inlet and outlet, rigid PTFE base andadjustable plunger, sturdy construction, and pressure stable.• TOUCH-PAD CONTROL WITH LCD DISPLAYA four lined display with touch-pad input enables the system tooperate in a stand alone mode. The menu driven input isself-explanatory and intuitive for system operation.• SAMPLE HANDLING SYSTEMA precise swivel robot arm, in combination with a spring mountedneedle loop and an inert 10 mL syringe, transfers the liquid withinthe system. There are four solvent paths possible that allow forapplication flexibility and efficient system rinsing functions. Thesample loop is set to 5 mL (other volumes are availableupon request).HeatingBathExtremely accurate, sealed evaporationchamber with laser control.