203.102j

203.102z

Pyrometer indicators. Calibration of each additional dial of a multi-
dial instrument (reference junction compensator counting as a
dial) or of each additional range of each dial or scale of a multi-
range instrument___

Calibration of a thermocouple and pyrometer indicator as a unit will be charged for as if the thermocouple and indicator were separately calibrated.

For special tests not covered by the above schedule, fees will be charged
dependent upon the nature of the test..

(*)

*For current fees, see Appendix C.

22 Also published as NBS Monograph 37, International Practical Temperature Scale of 1948, Text Revision of 1960. Price 10 cents. Available from Superintendent of Documents, U.S. Government Printing Office, Washington, D.C., 20402 (see p. 135 for order form).

203.103 Resistance thermometers.

Resistance thermometers will normally be tested only if they may reasonably be expected to meet the requirements as a standard on the International Practical Temperature Scale. In general, this requires a four-lead resistor of very pure platinum hermatically sealed in a protecting tube.

Item

Description

Fee

203.103a

Standard platinum resistance thermometers-calibration at the ice,
steam, and sulfur points. Table will be furnished with entries at
1-degree intervals..

(*)

203.103b

Standard platinum resistance thermometers-calibration under 203.-
103a and at the oxygen point. Table will be furnished with entries
at 1-degree intervals.

(*)

203.103c

203.103d

203.103e

Calorimetric type platinum resistance thermometers-calibration at
the ice and steam points and at approximately 5 °C. Table will be
furnished with entries at 1-degree intervals.

Capsule-type platinum resistance thermometers-comparison calibra-
tion over the range from 12 to 90 °K. Results will be in the form of
a table with entries at 0.1-degree intervals. Additional tables are
not available unless requested at the time of test. See item
203.103f____

Determination of the average temperature coefficient of electrical
resistance over the interval 0 to 100 °C. Minimum length, 16 in.
Samples must have a resistance of at least 0.1 ohm per foot at the
ice point__

See footnote at end of table.

784-291 0657

(*)

(*)

(*)

203.103f

Each additional table expressing the results of test under items 203.103
a, b, or c____

Additional tables under 203.103d are not available unless requested at the time of test.

(*)

203.103g

Item 203.103f if requested at the same time as the test of the ther-
mometer under items 203.103a, b, c, or d_ _ _ _

(*)

203.103h

Capsule-type platinum resistance thermometers—mounting this type
of thermometer for test under items 203.103 a or b. Not appli-
cable to item 203.103d_--_

(*)

203.103y

When instruments submitted are found to be unsuitable for test or
unreliable, a charge will be made to cover the cost of the work done.

203.103z

For special tests not covered by the above schedule, fees will be
charged dependent upon the nature of the test_ _ _

*For current fees, see Appendix C.

203.105 Optical pyrometers and ribbon filament lamps.

(a) Optical pyrometers and ribbon filament lamps submitted for calibration should be accompanied by an order requesting the test and specifying the fee schedule item number. If desired, the calibration points may be specified. A bill will be rendered at the completion of the work.

(b) The calibration of an article will not be undertaken if it possesses such unusual characteristics as to prevent the carrying out of the calibration at a reasonable cost. If, in the course of a calibration, the device is found to behave abnormally, work may be discontinued and a fee covering the cost of the work performed will be charged.

Item

Description

Fee

203.105a

Optical pyrometers: Calibration of one range between 800 and 2400
°C or the first range, between 800 and 2400 °C, of a calibration
involving more than one range; 4 to 12 values.

(*)

203.105b

203.105c

Optical pyrometer: Calibration of ranges in addition to item
203.105a up to 4200 °C; 4 to 12 values in each range, per range_ __
Optical pyrometers: Three or fewer values, 800 to 2400 °C..

(*)

॰

(*)

203.105d

Ribbon filament lamps: Values of brightness temperature (at wave-
length of 0.65μ) versus direct current at 6 to 16 points in the range,
800 to 2300 °C..-

See footnote at end of table.

(*)

203.105e

Ribbon filament lamps: Values of brightness temperature (at wave-
length of 0.65μ) versus direct current at five or fewer points in the
range, 800 to 2300 °C....

(*)

203.105f

Additional interpolated values as per item 203.105a and 203.105b,
per point...

(*)

203.105z

For special test not covered by the above schedule, fees will be
charged dependent upon the nature of the test_.

*For current fees, see Appendix C.

Cryogenic Physics

203.301 Capsule-type germanium resistance thermometers.

Item

Description

203.301a

Capsule-type germanium resistance thermometer, calibrated be-
tween 2 °K and 20 °K at intervals of approximately 1°___

Fee

204.701 Neutron sources

204.702 Neutron instruments

204.703 Neutron irradiation of foils

Radioactivity+

204.201 Calibration of gamma-emitting radioactive samples that conform to the physical, chemical, and activity level specifications for measurement in the National Bureau of Standards calibrated 4πy-ionization chamber.

Standard reference materials of certified radioactivity are available from the National Bureau of Standards, Washington, D.C., 20234. For characteristics and prices see NBS Misc. Pub. 260, Supp.

204.201a

204.201b

204.201z

(1) 100 to 300 micrograms of radium calibrated in terms of micro-
grams of radium content measured relative to the National
Radium Standard__.

(2) Chemically stable solutions of the following radionuclides in the
specified activity ranges can be measured.

i. 50 to 100 microcuries sodium 22, sodium 24, scandium 46,
cobalt 60, yttrium 88.

ii. 150 to 300 microcuries manganese 54, iron 59, zinc 65,
strontium 85, niobium 95, iodine 131, cesium 137, tanta-
lum 182, gold 198, mercury 203.

iii. 300 to 600 microcuries potassium 42, cobalt 57, cerium 141.
Solutions should be 5 ml in volume and flame-sealed in glass vials or ampoules
of o.d. 16.0±0.5 mm, wall thickness approximately 0.5 mm.

Chemically stable solutions of the following radionuclides in the
specified activity ranges can be measured..

i. 10 to 20 microcuries sodium 22, sodium 24, scandium 46, cobalt
60, yttrium 88.

ii. 30 to 60 microcuries manganese 54, iron 59, zinc 65, strontium
85, niobium 95, iodine 131, cesium 137, tantalum 182,
gold 198, mercury 203.

iii. 60 to 100 microcuries potassium 42, cobalt 57.

Solutions should be 5 ml in volume and flame-sealed in glass vials or ampoules
of o.d. 16.0±0.5 mm, wall thickness approximately 0.5 mm.

For special tests not covered by the above schedule, fees will be
charged dependent on the time involved in making the tests_

(*)

(*)

(*)

*For current fees, see Appendix C.

204.202 Calibration of alpha-emitting radioactive samples that conform to the physical and activity level specifications for measurement in the National Bureau of Standards 2πα-proportional counter

Item

Description

Fee

204.202a

Chemically stable samples that conform to the physical and activity
level specifications listed below can be measured.

(*)

i. Source diameter should not exceed 10 cm.

204.202z

ii. Source thickness should be such that more than 99.5 percent
of the emitted alpha particles have an energy greater than
400 keV.

iii. Emission rate should not exceed 5X103 aps.

For tests not covered by the above schedule, fees will be charged
dependent on the time involved in making the tests.

*For current fees, see Appendix C.

204.203 Calibration of beta-emitting radioactive samples that conform to the physical, chemical, and activity level specifications for measurement in the National Bureau of Standards 278-windowless proportional flow counter, or in the National Bureau of Standards 2TB-ionization chamber.

Item

Fee

Description

204.203a

Chemically stable solutions of the following radionuclides in the
specified activity ranges can be measured in the National Bureau of
Standards 2 TB-windowless proportional flow counter..

(*)

i. 1 to 10 microcuries/milliliter chlorine 36, strontium-yttrium 90.
ii. 2 to 20 microcuries/milliliter thallium 204.

204.203b

204.203z

iii. 5 to 50 microcuries/milliliter calcium 45, promethium 147.

iv. 10 to 100 microcuries/milliliter sulfur 35.

Solutions should be approximately 5 ml in volume and flame-sealed in
glass vials or ampoules.

Chemically stable solutions of the following radionuclides in the
specified activity ranges can be measured in the National Bureau
of Standards 28-ionization chamber...

i. 2 to 20 microcuries/milliliter phosphorus 32. Solution should
be neutral or weak acid with not more than 0.2 mg/ml total
solids.

ii. 2 to 20 microcuries/milliliter strontium-yttrium 90. Solution
should be weak HCl (1N or less) with not more than 0.2 mg/
ml total solids.

Solutions should be approximately 5 ml in volume and flame-sealed in
glass vials or ampoules.

For tests not covered by the above schedule, fees will be charged de-
pendent on the time involved in making the tests.

*For current fees, see Appendix C.

(*)

Radiological Equipment-Gamma-Ray Sources

204.501 X-ray and gamma-ray instruments. NOTE: Calibration of radiation beam within ±2 percent.

Item

Description

Fee

204.501a

Calibration of one x-ray exposure-indicating instrument of one range,
in international roentgens for lightly or moderately filtered x rays
one half-value layer from the following selections.

of

(*)

*For current fees, see Appendix C.