Thanks to all who replied directly to me. The majority of answers (11/20) report of charging by 15 min. increments. Eight mention an 1/2 hour minimum charge. Can anyone please send me the address on the Purdue site that has been mentioned by J. Paul Robinson as dealing with such issues? Thank you Ayala ------------------------------------------------------------------- Dr. Ayala Sharp Biological Services, Weizmann Institute of Science, Rehovot, ISRAEL. FAX: 972-8-9344113 E-mail: lssharp@weizmann.weizmann.ac.il
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