Carbon

Designation: E50 – 00 (Reapproved 2005)

Standard Practices for

Apparatus, Reagents, and Safety Considerations for
Chemical Analysis of Metals, Ores, and Related Materials1
This standard is issued under the fixed designation E50; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number inparentheses indicates the year of last reapproval. A superscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.

1. Scope
1.1 These practices cover laboratory apparatus and reagents
that are required for the chemical analysis of metals, ores and
related materials by standardmethods of ASTM. Detailed
descriptions of recommended apparatus and detailed instructions for the preparation of standard solutions and certain
nonstandardized reagents are included. An identifying number
has been assigned each apparatus (see Section 8) and reagent
(see Section 25) for convenience of reference in the analytical
methods. Included also are general recommendations on the
purity ofreagents and protective measures for the use of
hazardous reagents.
1.2 The aim of these recommendations is to present descriptions of such apparatus and reagents as are common to several
ASTM methods, and thus avoid needless repetition. No attempt
has been made to provide a description of every apparatus and
reagent prescribed in ASTM methods for the chemical analysis
of metals. Otherapparatus and reagents that are required will
be found listed or specified in the individual methods of
analysis.
1.3 These recommendations are intended to apply to the
ASTM methods of chemical analysis of metals when definite
reference is made to these practices, as covered in Section 3.
1.4 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses aremathematical
conversions to SI units that are provided for information only
and are not considered standard.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of whoever uses this standard to consult and
establish appropriate safety and health practices and determine the applicability of regulatory limitationsprior to use.
Specific hazards are given in Section 7 and Note 2.
NOTE 1—The use of the verb “shall” (with its obligatory third person

1
These practices are under the jurisdiction of ASTM Committee E01 on
Analytical Chemistry for Metals, Ores, and Related Materials and are the direct
responsibility of Subcommittee E01.20 on Fundamental Practices and Measurement
Traceability.
Current editionapproved May 1, 2005. Published June 2005. Originally
approved in 1943. Last previous edition approved in 2000 as E50 – 00. DOI:
10.1520/E0050-00R05.

meaning) in this standard has been confined to those aspects of laboratory
safety where regulatory requirements are known to exist. Such regulations, however, are beyond the scope of these practices.

2. Referenced Documents
2.1 ASTMStandards:2
D1100 Specification for Filter Paper for Use in Chemical
Analysis3
D1193 Specification for Reagent Water
E1 Specification for ASTM Liquid-in-Glass Thermometers
E70 Test Method for pH of Aqueous Solutions With the
Glass Electrode
E77 Test Method for Inspection and Verification of Thermometers
E100 Specification for ASTM Hydrometers
E126 Test Method for Inspection, Calibration, andVerification of ASTM Hydrometers
E128 Test Method for Maximum Pore Diameter and Permeability of Rigid Porous Filters for Laboratory Use
E145 Specification for Gravity-Convection and ForcedVentilation Ovens
E147 Specification for Apparatus for Microdetermination of
Nitrogen by Kjeldahl Method
E287 Specification for Laboratory Glass Graduated Burets
E288 Specification for Laboratory Glass Volumetric...