APPLIED BIOSYSTEMS 785A PROGRAMMABLE ABSORBANCE DETECTOR...THIS WAS SURPLUS FROM A UNIVERSITY.....I COULD ONY TEST TO POWER ON.....NO FURTHER TESTING DONE.....THEREFORE LISTEF IN PARTS NON WORKING ONLY DUE TO NO WARRANTY..NO RETURNS...BUYERS PAYS 65.00 S/H TO LOWER 48 STATES...THANKS FOR LOOKING.