ASTM D1610-00
(Practice)Standard Practice for Conditioning Leather and Leather Products for Testing
Standard Practice for Conditioning Leather and Leather Products for Testing
SCOPE
1.1 This practice covers the conditioning of all units and specimens of leather and leather products prior to testing and the conditions under which they should be tested. This practice does not apply to wet blue.
1.2 This standard does not purport to address the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D 1610 – 00
Standard Practice for
Conditioning Leather and Leather Products for Testing
This standard is issued under the fixed designation D 1610; 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 in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope reliable comparisons to be made among different leather and
leather products, and among different laboratories.
1.1 This practice covers the conditioning of all units and
specimens of leather and leather products prior to testing and
6. Apparatus
the conditions under which they should be tested. This practice
6.1 Room, in which the standard atmosphere is automati-
does not apply to wet blue.
cally maintained.
1.2 This standard does not purport to address all of the
6.2 Psychrometer—Either a sling psychrometer, or a sta-
safety concerns, if any, associated with its use. It is the
tionary type psychrometer having the air circulated over the
responsibility of the user of this standard to establish appro-
thermometer bulbs.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
NOTE 1—It is preferable to draw air over the thermometer bulb rather
than blow air, from a fan source, over them. Heat from the fan may cause
2. Referenced Documents
errors in the readings.
2.1 ASTM Standards:
6.3 Thermometers—The thermometers should conform ap-
D 1517 Terminology Relating to Leather
proximately to the following requirements: range 0 to 52°C (32
E 337 Test Method for Measuring Humidity with a Psy-
to 122 °F); graduation 0.2°C (0.5°F). They should be matched
chrometer (The Measurement of Wet-Bulb and Dry-Bulb
to within 0.1°C (0.25°F) throughout the range used.
Temperatures)
NOTE 2—Under ordinary conditions, an error of 1 % in relative
humidity corresponds to an error of approximately 0.1°C (0.2°F) in the
3. Terminology
wet-bulb depression.
3.1 Definition:
3.1.1 For definitions of leather terms used in this practice,
7. Calibration
refer to Terminology D 1517.
7.1 Thermometers—The thermometers used for the deter-
3.1.2 standard atmospheric conditions—for leather and
mination of the wet- and dry-bulb temperature shall be
leather testing, a temperature of 23 6 2°C (73.4 6 3.6°F) and
calibrated against a certified standard thermometer and any
a relative humidity of 50 6 4%.
corrections found necessary shall be applied to the readings.
4. Summary of Test Method
NOTE 3—Test Method E 337 may be used for reference.
4.1 The conditioning prescribed in this practice is designed
7.2 Relative Humidity—Use either the sling or the station-
to obtain reproducible test results on leather and leather
ary psychrometer to determine the relative humidity of the
products by the standardization of the relative humidity and
conditioned atmosphere. In both cases, air circulation rate
temperature conditions to which the leather or leather product
around the thermometer bulbs should be not less than 10 ft (3
is subjected prior to and during testing.
m)/s and the exposure not less than 60 s before readings are
taken. When using the sling psychrometer, readings, especially
5. Significance and Use
of the wet bulb, shall be taken as quickly as possible after
5.1 Temperature and relative humidity have an influence on
bringing it to rest.
many of the physical properties of leather. Depending on
7.2.1 Using the wet- and dry-bulb readings, determine the
environmental conditions the moisture content in leather may
relative humidity from psychrometric tables.
vary significantly. Standardized conditioning in part allows for
NOTE 4—The wet-bulb temperature, T , in degrees Celsius correspond-
w
ing to a relative humidity of 50 % at a given a
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