Public Higher Education Bulletin

for a differential scanning calorimeter (Bid # C-02-8327M). Southern Illinois University Carbondale is seeking bids for a research grade differential scanning calorimeter (DSC) to meet the following specifications:

• Must employ power compensation technology to measure energy directly to achieve high resolution
• The DSC must operate in the temperature range of -180 degrees C to 730 degrees C or better and must be equipped with all required accessories for measuremnts down to -180 degrees C
• Must be able to conduct measurements at controlled rates between -180 degrees C and 300 degrees C using He gas as a purge gas
• Liquid nitrogen consumption shall be less than 2 liters/hour with continuous cycling from -150 to 50 degrees C
• Must be able to achieve cooling times of 2 minutes or less for 200 degrees C to -150 degrees C
• Temperature accuracy and precision of DSC must be equal to or better than 0.1 degrees C
• Dynamic range shall be 0.2 uW to 800mW or better
• Sensitivity shall be 0.2 uW or better
• Must have < 1g furnace mass so that controlled heating rates up to 500 degrees C/min could be achieved to monitor certain fast curing reactions
• The system shall use platinum-iridium sensor and platinum resistance thermometer
• Calorimetric precision shall be 0.1% or better
• The DSC shall have two separate heated sample and reference sensors embedded into a constant temperature heat sink
• Must be capable for StepScan DSC mode and be able to analyze samples under pure isothermal conditions and constant heating for direct extraction of reversible specific heat capacity and irreversible kinetic components
• Must be capable of push button cleaning or baking of DSC cell
• Must be capable of automated procedure for temperature and enthalpy calibration
• Electronic voltage: 115V
• Software to be installed on a University provided Dell computer, and iterface the DSC to this computer in order for the software to control the system
• Must be compatible with existing accessories

• Must be capable of simultaneous measurements in thermal gravimetric analysis and differential thermal analysis modes
• Must operate in 50 degree - 15 degree C range or higher simultaneously in both TGA and DTA (DSC) modes
• Must be capable of operation under various gases including air and oxygen, and must be capable of operating under vacuum
• Must be equipped with a separate port for injection of corrosive gases into the furnace tube to insure that corrosive gases do not come into contact with electronics
• Must be equipped with a compressed or forced air cooling accessory to achieve cooling times of less thatn 15 minutes for cooling the system from 1000 to 50 degrees C
• Must have temperature precision of 0.1 degree C or better
• Gravimetric sensitivity to be 0.2 ug or better
• DTA signal sensitivity of 0.06 uV or better
• TGA measurement range of 200 mg or better
• DTA measurement range of +/-1000 uV or better
• Capable of automatic conversion of DTA signal to DSC units

The University reserves the right to accept or reject any and all bids or parts thereof. Vendor may expect payment thirty to sixty days after receipt of invoice, unless otherwise stated in the bid/RFP documents. Contingent on Board of Trustees approval. Bidding documents may be obtained by contacting the Purchasing Office. Illinois Department of Human Rights (IDHR) eligibility number is required on all bid proposals.

(Submitted by Pamela Brandt, State Purchasing Officer.)