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(1) WWVB. This station (antenna coordinates 40°40'28.3" N., 105°02'39.5" W.; radiated power 12 kw.) broadcasts on 60 kHz. Its time scale is the same as for WWV and WWVH, and its frequency accuracy and stability are the same. Its entire format consists of a 1 pulse per second special binary time code giving minutes, hours, days, and the correction between its UTC time scale and UTI astronomical time. Identification of WWVB is made by its unique time code and a 45° carrier phase shift which occurs for the period between 10 minutes and 15 minutes after each hour. The useful coverage area of WWVB is within the continental United States. Propagation fluctuations are much less with WWVB than with high-frequency reception, permitting frequency comparisons to be made to a few parts in 10 11 per day.

(m) Special Publication 432. This publication describes in detail the standard frequency and time service of NIST. Single copies may be obtained at no charge upon request from the National Institute of Standards & Technology, Time & Frequency Services Group, 524.06, Boulder, CO 80303. Quantities may be obtained from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402, at a nominal charge per copy. 8 200.108 Request procedure.

(a) A formal purchase order for the calibration or test should be sent before or at the time the instrument or standard is shipped. The purchase order should provide clear identification of the apparatus being submitted, and give separate instructions for return shipment, mailing of report, and billing. If a customer wishes to minimize the time during which the equipment is out of service, the customer can usually arrange to be notified of the scheduled test date to allow timely shipment. (See $200.110.) Requests from Federal agencies, or from State agencies, for calibrations or tests on material to be used on private or Federal contract work should be accompanied either by purchase order or by letter or document authorizing the cost of the work to be billed to the agency.

(b) The submission of a purchase order for measurement services under

this subchapter shall be understood as constituting an agreement on the part of the customer to be bound by the restrictions on the use of results as set forth in $ 200.113 of this part. Acceptance of purchase orders does not imply acceptance of any provisions set forth in the order contrary to the policy, practice, or regulations of NIST or the U.S. Government. (A statement to the effect that NIST is an agency of the U.S. Government should satisfy other Government agencies with regard to compliance with Government regulations and Executive orders.)

(c) A test number will be assigned by NIST to each instrument or group of similar instruments or standards when the order is accepted. This test number should be referred to in all subsequent communications. Also, each instrument in a group must be uniquely identified, usually by the manufacturer's name and instrument serial number. When the serial number is lacking, an alternative identifying mark should be provided. If none is found, NIST will mark the piece with an NIST identification number. If the apparatus submitted has been previously calibrated by NIST, the serial number or identifying mark should be given on the new order, so that a continuing record of stability history can be established.

(d) Inquiries for measurement services should be directed to the NIST address listed in the various sections of the Appendix to SP 250.

8 200.109 Shipping, insurance, and risk

of loss. (a) Shipment of apparatus to NIST for calibration or other test should be made only after the customer has accepted the estimate of cost and the tentative scheduling. Repairs and adjustments on apparatus submitted should be attended to by the owner, since NIST will not undertake them except by special arrangement. Apparatus not in good condition will not be calibrated. If defects are found after calibration has begun, the effort may be terminated, a report issued summarizing such information as has been found, and a fee charged in accordance with the amount of work done.

(b) The customer should pack apparatus .sent to NIST so as to minimize

the likelihood of damage in shipment and handling. Suggestions on packing and shipping are made in some sections of SP 250. In every case, the sender should consider the nature of the apparatus, pack it accordingly, and clearly label shipments containing fragile instruments or materials, such as glass and the like.

(c) To minimize damage during shipment resulting from inadequate packing, the use of strong reusable containers is recommended. As an aid in preventing loss of such containers, the customer's name should be legibly and permanently marked on the outside. In order to prolong the container's use the notation "REUSABLE CONTAINER, DO NOT DESTROY” should be marked on the outside.

(d) Shipping and insurance coverage instructions should be clearly and legibly shown on the purchase order for the calibration or test. The customer must pay shipping charges to and from NIST; shipments from NIST will be made collect. The method of return transportation should be stated, and it is recommeded that return shipments be insured, since NIST will not assume liability for their loss or damage. For long-distance shipping it is found that air express and air freight provide an advantage in reduction of time in transit. If return shipment by parcel post is requested or is a suitable mode of transportation, shipments will be prepaid by NIST, but without covering insurance. When no shipping or insurance instructions are furnished, return shipment will be made by common carrier collect, but uninsured.

(e) NIST will not be responsible for the risk of loss or damage to any item during shipment to or from NIST. Any arrangements for insurance covering this risk must be made by the customer. Return shipment will be made by NIST as indicated in paragraph (d) of this section. The purchase order should always show the value of the equipment, and if transit insurance is carried by the customer, this fact should be stated.

(f) The risk of loss or damage in handling or testing of any item by NIST must be assumed by the customer, except when it is determined by NIST that such loss or damage was occa

sioned solely by the negligence of NIST personnel.

(g) When a test number has been assigned prior to shipment to NIST, this number should be clearly marked on the shipping container. When a test number has not been assigned, an invoice, copy of the purchase order, or letter should be enclosed in the shipment to insure proper identification. The original purchase order should be forwarded as appropriate to:

Office of Measurement Services, National Institute of Standards & Technology, Washington, DC 20234; or to Measurement Services Clerk, National Institute of Standards & Technology, Boulder, CO 80303.

(h) The calibrations listed in SP 250 are performed at Boulder, Colorado and Gaithersburg, Maryland. 8200.110 Priorities and time of com

pletion. Schedule work assignments for calibrations and other tests will generally be made in the order in which confirmed requests are received. However, Government work may be given priority. On the regular services, the workload is usually such that the turnaround interval, between the date a customer's apparatus is received and the date it is prepared for return shipment, will be not more than 45 days. Some types of instruments may require considerably longer, particularly if their abnormal behavior requires reruns to check reliability. The customer who can spare the instrument for only a short time can usually arrange by letter or telephone call for shipping it to NIST just as the assigned starting date approaches. A notice will be sent acknowledging receipt of the tomer's standard and/or purchase order. If both a confirmed purchase order (or equivalent) and the apparatus have been received, estimates of the completion date and the calibration fee will be sent upon request. 8200.111 Witnessing of operations.

NIST welcomes scientists and engineers who may wish to visit its laboratories and discuss its methods. Ordinarily visitors will not be permitted to witness the actual carrying out of highly precise measurements because their presence introduces distraction


that may lead to errors or delays. This policy may be waived in those cases where NIST determines that the visitor can be of service in setting up apparatus of a new or unusual nature, in the case of referee tests, or in other cases in which the legal validity of the result may require the presence of duly authorized witnesses.

tice. However, even in such instances, when practical and meaningful, SI and customary units may be given in parallel. Users of NIST calibration services may specify the units to be used in the calibration, especially for commercial devices and standards using customary units or units having some legal definition.

8200.112 Reports.

(a) Results of calibrations and other tests are issued to the customer as formal reports entitled, “National Institute of Standards & Technology Report of Calibration," "National Institute of Standards & Technology Report of Test,” or “National Institute of Standards & Technology Report of Analysis," as appropriate. Copies are not supplied to other parties except under applicable Federal law. Whenever formal certification is required by law, or to meet special conditions adjudged by NIST to warrant it, a letter will be provided certifying that the particular item was received and calibrated or tested, and identifying the report containing the results.

(b) NIST reports of calibration generally include in sentence form a statement of the uncertainty attached to the numerical values reported. Limits of uncertainty usually comprise an estimate of systematic error plus a value of imprecision. Details on how these estimates are arrived at are in many cases included in the calibration report. Additional information may be found in SP 250.

(c) The NIST practice is to express data given in calibration or test reports in the SI or International System of Units. The International System of Units (SI) was defined and given official status by the 11th General Conference of Weights and Measures, 1960. A complete listing of SI units is presented in detail in NIST SP 330. The NIST will express data in SI units unless this makes communication excessively complicated. For example, commercial gage designations, commonly used items identified by nominal dimensions, or other commercial nomenclatures or devices (such as drill sizes, or commercial standards for weights and measures) expressed in customary units are an exception from this prac

8200.113 Use of results or reports.

(a) As the national standards laboratory of the United States, NIST maintains and establishes the primary standards from which measurements in science and industry ultimately derive. It is therefore sometimes desirable for manufacturers or users of measurement standards to make appropriate reference to the relationship of their calibrations to NIST calibrations. The following considerations must be borne in mind, and shall be understood as constituting an agreement on the part of the NIST customer to be bound thereby in making reference to NIST calibration and test reports.

(b) The results of calibrations and tests performed by NIST are intended solely for the use of the organization requesting them, and apply only to a particular device or specimen at the time of its test. The results shall not be used to indicate or imply that they are applicable to other similar items. In addition, such results must not be used to indicate or imply that NIST approves, recommends, or endorses the manufacturer, the supplier, or the user of such devices or specimens, or that NIST in any way "guarantees” the later performance of items after calibration or test.

(c) NIST declares it to be in the national interest that it maintain an impartial position with respect to any commercial product. Advertising the findings on a single instrument could be misinterpreted as an indication of performance of other instruments of identical or similar type. There will be no objection, however, to a statement that the manufacturer's primary standards have been periodically calibrated by NIST, if this is actually the case, or that the customer might arrange to have NIST calibrate the item purchased from the manufacturer.



(d) NIST does not approve, rec- sessed for calibrations which cannot be ommend, or endorse any proprietary completed because of faulty operation product or proprietary material. No of the customer's device. Fees for calireference shall be made to NIST, or to brations or tests include the cost of reports or results furnished by NIST in

preparation of an NIST report. Remitany advertising or sales promotion

tances should be made payable to the which would indicate or imply that

National Institute of Standards & NIST approves, recommends, or

Technology dorses any proprietary product or proprietary material, or which has as its

8200.115 Description of services and purpose an intent to cause directly or

list of fees, incorporation by refindirectly the advertised product to be used or purchased because of NIST test reports or results.

(a) NIST Special Publication 250,

“Calibration and Related Measurement In its own activities as a scientific in

Services of the National Institute of stitution, NIST uses many different materials, products, types of equip

Standards & Technology” is hereby inment, and services. This use does not

corporated by reference, pursuant to 5 imply that NIST has given them a pref

U.S.C. 552(a)(1) and 1 CFR Part 51. SP erential position or a formal endorse

250 states the authority under which ment. Therefore, NIST discourages ref

NIST performs various types of measerences, either in advertising or in the urement services including calibrascientific literature, which identify it tions and tests and charges fees thereas a user of any proprietary product, for, states the general conditions under material, or service. Occasionally, ef- which the public may secure such servfective communication of results by ices, decribes these services in considNIST to the scientific community re- erable detail, and lists the fees to be quires that a proprietary instrument, charged, and sets out the instructions product, or material be identified in an for requesting them in an appendix NIST publication. Reference in

which is reviewed, revised and reissued NIST publication, report, or other doc

semi-annually (December and June). ument to a proprietary item does not

The Director, Office of the Federal constitute endorsement or approval of

Register, approved the incorporation that item and such reference should

by reference on December 28, 1967. not be used in any way apart from the

(b) SP 250 is available at the folcontext of the NIST publication, report, or document without the advance

lowing places: express written consent of NIST.

(1) Superintendent of Documents,

Government Printing Office, Wash8200.114 Fees and bills.

ington, DC 20402. (a) In accordance with 15 U.S.C. 271 et

(2) Technical Information and Publiseq., fees are charged for all measure

cations Division, National Institute of ment services performed by NIST, un

Standards & Technology, Washington, less waived by the Director, or the Di

DC 20234. rector's designee, when deemed to be in (3) District Offices of the U.S. Dethe interest of the Government. The partment of Commerce. above-mentioned statutes authorize (4) Federal Depository Libraries. the issuance from time to time of ap- (c) Revisions of SP 250 will be issued propriate regulations regarding the

from time to time by the National Inpayment of fees, the limits of tolerance

stitute of Standards & Technology, standards submitted for

Washington, DC 20234. verification, and related matters.

(d) Further information concerning (b) The minimum fee for any service request accepted by NIST is $10, unless

policies, procedures, services, and fees

may be obtained by writing the Office otherwise indicated in SP 250. If apparatus is returned without testing, a

of Measurement Services, National Inminimum charge of $10 may be made to

stitute of Standards & Technology, cover handling. Charges commensurate

Washington, DC 20234. with the work performed will be as





Subpart A-General Information

Sec. 230.1 Introduction. 230.2 Identification of Standard Reference

Materials. 230.3 New Standard Reference Materials.

8230.2 Identification of Standard Ref.

erence Materials. The SRM's are listed by category in SP 260 and by sequential number in the supplements. The number uniquely identifies a particular SRM. Renewals are indicated by the addition of a letter to the original number. Thus, lla is the first, 1lb the second, and llc the third renewal of SRM 11, Basic Open-Hearth Steel, 0.2 percent carbon. In this way, a particular number or number and letter always represent a material of fixed or approximately fixed composition.

Subpart B-Purchase Procedure

230.4 Ordering. 230.5 Terms and shipping. 230.6 Standard Reference Materials out of


Subpart C-Description of Services and List

of Fees

$ 230.3 New Standard Reference Mate

rials. When new SRM's or renewals of old ones are issued, announcements are made in SP 260, its supplement, and in scientific and trade journals.

230.7 Description of services and list of fees,

incorporation by reference. AUTHORITY: Sec. 9, 31 Stat. 1450, as amended; 15 U.S.C. 277. Interprets and applies sec. 7, 70 Stat. 959; 15 U.S.C. 275a.

SOURCE: 41 FR 8472, Feb. 27, 1976, unless otherwise noted.

Subpart B-Purchase Procedure

Subpart A-General Information

8230.4 Ordering.

Orders should be addressed to the Office of Standard Reference Materials, National Institute of Standards & Technology, Washington, DC 20234. Orders should give the amount number of units), catalog number and name of the standard requested. For example: 1 each, SRM 11h, Basic Open-Hearth Steel, 0.2 percent C. These materials are distributed only in the units listed.

(41 FR 8472, Feb. 27, 1976, as amended at 55 FR 38315, Sept. 18, 1990)

8 230.1 Introduction.

This part states the procedure for ordering Standard Reference Materials (SRM's) issued by the National Institute of Standards & Technology. SRM's are used to calibrate measurement systems, evaluate measurement methods, or produce scientific data that can be referred to a common base. NIST Special Publication 260, “Catalog of NIST Standard Reference Materials,” lists and describes the SRM's issued by NIST. SP 260 is periodically revised to include new SRM's and eliminate those that have been discontinued. Between editions of SP 260, supplements are issued that list new or renewal SRM's not listed in SP 260. In addition, these supplements list the fees charged for available SRM's.

$ 230.5 Terms and shipping.

(a) Prices are given in the SP 260 supplement. These prices are subject to revision and orders will be billed for prices in effect at the time of shipment. No discounts are given on purchases of SRM's.

(b) Payment need not accompany a purchase order. Payment is due within 30 days of receipt of an invoice.

(c) SRM's are shipped in the most expeditious manner that complies with transportation and postal laws and regulations.

(41 FR 8472, Feb. 27, 1976, as amended at 55 FR 38315, Sept. 18, 1990)

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