National Institute of Standards & Technology, Acquisition & Assistance Div.,100 Bureau Drive Stop 3572, Bldg. 301, Rm B117, Gaithersburg, MD 20899-3572

68 -- LIQUID HELIUM SOL 53SBNB060008 DUE 102299 POC Paul Cataldo (301)975-6332; Pauline Mallgrave (301)975-6330 WEB: NIST Contracts Homepage, http://www.nist.gov/admin/od/contract/contract.htm. E-MAIL: NIST Contracts Office, Contract@nist.gov. The notice published October 13, 1999 is modified to include the answers to questions submitted by a prospective offeror and to extend the due date for receipt of quotations to October 22, 1999. 1. Q) Is dewar rental included in the price of the gas? 1. A) No. Demurrage charges will start 30 days after receipt at destination and continue until company is notified for pick-up. 2. Q) What are the product specifications for liquid helium? 2. A) 99.998% purity. 3. Q) What is the approximate usage for each dewar? Are one or more sizes used predominantly? 3. A) Each order generally runs from 2-12 dewars, with 2 being very low and 12 high. 9 is probably a good average. The 100 liter dewars are used most often, with 60 liters used the next most frequently, some 30 liters used and 250 liters used rarely. Posted 10/18/99 (W-SN392649). (0291)

Loren Data Corp. http://www.ld.com (SYN# 0224 19991020\68-0002.SOL)