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ASTM E 617 Document Information:
Title
Standard Specification for Laboratory Weights and Precision Mass Standards
ASTM International
Publication Date:
Nov 10, 1997
Scope:
This specification covers weights and mass standards used in
laboratories, specifically classes 0,
1, 2, 3, 4, 5, 6 and 7. This specification replaces National Bureau of
Standards Circular 547,
Section 1, which is out of print.
This specification further recognizes that International
Recommendation R111 exists, that describes
classes E1, E2, F1, F2, M1, M2 and M3. Users may choose to reference
either R111 or this
specification, depending on requirements.
This specification contains the principal physical characteristics and
metrological requirements
for weights that are used.
For the verification of weighing instruments;
For the verification of weights of a lower class of accuracy; and
With weighing instruments.
Tolerances and design restrictions for each class are described in
order that both individual
weights or sets of weights can be chosen for appropriate applications.
The values stated in SI units are to be regarded as the standard.
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