User requirement specification for Gas Chromatography (GC)

·       All temperature and time functions are microprocessor controlled and are shown on the touch-screen display.

·       Software selectable coolant time-out and coolant cut-in temperatures.

·       There are up to 12 PPC zones configured as 2 carrier (2 zones each), 2 detector (2 zones each) and 4 auxiliary channels

·       PPC or manual pneumatics are available for all injectors

·       PPC provides direct setting of split flow rates and ratios

·       Pneumatic program rates: 0-100.0 psi/min 0-100.0 mL/min 0-200.0 cm/sec or ballistic

·       PPC provides direct setting in mL/min

·       PPC provides direct setting in mL/min, psig or kPa

·       Auxiliary PPC zones compensate for variations in ambient temperature for maximum stability

·       All control is accomplished through the keyboard or by a data system.

·       Up to two injectors may be installed and operated with independent temperature control.

·       Adapter for on-column injection to wide-bore capillary columns

·       50 °C to 450 °C in 1 °C increments

·       1/8-inch fitting

·       1/4-inch column adapter available

·       Manual pneumatics – choice of flow controller with headpressure gauge, or flow controller with head-pressure gauge and digital display of flow

·       PPC pneumatics – programmed flow or pressure includes readout which displays pressure or column flow.

·       Charcoal trap in split vent prevents contamination of split valve and lab air

·       Two choices of liner: 2-mm and 4-mm internal diameter

·       50 °C to 450 °C in 1 °C increments

·       Manual pneumatics – pressure regulator (0-60 psig) for digital display of column head pressure. Automatic control of split vent solenoid valve

·       PPC pneumatics – four software configurable modes: programmed flow, programmed pressure, programmed velocity or constant flow. Vacuum compensation software selectable

·       PPC pneumatics include  automatic control of split vent by split flow or split ratio

·        50 °C to 500 °C in 1 °C increments

·       Heating rate of 1 °C/min to 200 °C/min or ballistic

·       Cools down from 380 ˚C to 50 ˚C in less than 6 minutes, while the oven is cooling in the same temperature range and with an FID at 380 ˚C

·       1/16-inch fitting

·       Manual pneumatics – choice of flow controller with head-pressure gauge, or flow controller with head-pressure gauge and digital display of flow

·       PPC pneumatics include readout which displays pressure and column flow

·       Large-volume injection of up to 50 µL with autosampler, 150 µL manually

·       Three-ramps temperature program

·        Split ratio easily adjustable for a wide range of analysis conditions

·       Three choices of liner available: 1-mm and 2-mm i.d. and on-column

·       Charcoal trap in split vent prevents contamination of split valve and lab air

·        50 °C to 500 °C in 1 °C increments

·        Cools down from 380 ˚C to 50 ˚C in less than 5 minutes, while the oven is cooling in the same temperature range and with an FID at 380 ˚C

·       Heating rate of 1 °C/min to 200 °C/min or ballistic

·        1/16-inch fitting

·        Manual pneumatics – pressure regulator (0-60 psig) for digital display of column head pressure. Automatic control of split vent solenoid valve

·       PPC pneumatics – four software configurable modes: programmed flow, programmed pressure, programmed velocity or constant flow.

·       PPC pneumatics include automatic control of split vent by split flow or split ratio

·       Can assist users in removing unwanted sample residue from columns after analysis or switching between injectors and detectors for analytical flexibility

·       Easy setup configuration change, without requiring service information

·       Available only with PPC pneumatics

·       Includes injector and detector restrictors

·       To  prevents higher boiling components or residues from going through the column and the detector

·       Enhanced large-volume injection (ELVI) mode isolates the column and detector from the effects of high levels of solvent.

·       Isolation mode allows a septum change without interrupting carrier flow.

·       Mode to eliminate contamination by preventing heavy components in the sample from reaching the expensive and retentive chromatographic column. Allows back flushing during chromatographic run.

·       Mode to allow changing of columns without cooling and venting.

·       Keyboard controlled

·       1/16- or 1/8-inch fittings

·       Every detector is available with PPC or manual pneumatics.

·       1/8-inch fittings; also includes 1/16-inch capillary adaptor

·       Manual pneumatics – pressure regulator for hydrogen, needle valve for air

·       PPC pneumatics – software flow control of hydrogen and air

·       “Flame out” warning and ready interlock

·       Automatic ignite on units installed with PPC

·        Real-time graphic display of chromatogram

·       Injection countdown for manual injections

·       Column pressure/flow/velocity calculator

·       More upgradable firmware

·       Preventative maintenance counter

·       Password protection

·       Graphical display of temperature and pneumatic programs

·       Status-summary screen

·       Log file • Resolution: 240 x 320

·       256-color display

·       Meaningful error/alarm messages

·       Standard 9mL or 22mL sample vials can be used and up to 40 vials can be loaded into the removable vial magazine for automated analysis.

·       Overlapping thermo statting of up to 12 vials in Constant Mode for maximum productivity.

·       Automatic system and vial leak checks performed before analysis provide assurance of precision and sensitivity.

2.     Operating of machine should user friendly

3.     All parts should be easily assemble and easy to remove.

4.     All parts should be easy to clean.

5.     Supplier should provide support in case of any breakdown.

6.     The supplier should install the equipment and provide the necessary training to the user for operation and cleaning.

7.     The Supplier should provide all required documents.