ALTANA Liquid Color Standards Manual - Manual (Page 3)

Description
The instrument consists of a sturdy rack in which
eighteen tubes of colored fluids are inserted into
numbered positions. Empty spaces between these
positions allow the placing of a tube filled with
sample solution between two adjacent standards
to assist in comparing colors. A panel of frosted
glass behind the tubes provides a background
of diffuse white light when viewing the tubes.
Sunlight from a window or a source of indoor
light is usually sufficient for using the regular
Liquid Color Standards (Catalog # CL-6724). The
illuminated Liquid Color Standards are provided
with their own source of cool white fluorescent
light behind the frosted glass panel.
Use of this standard light source allows for
comparison of evaluation. The catalog number of
the Illuminated rack alone is CG-6410.
WARNING! This manual cannot address all of the
safety consideration associated with its use. It is
the responsibility of the user to consult this manual
and establish appropriate safety practices for use
with this equipment and the individual materials
being used.
The colors of the Gardner Scale range from almost
colorless „water white“ through shades of yellow
and range to rusty red. Standards 1 through 8 are
solutions of potassium chloroplatinate; they are
light in value and have a very slight greenish hue.
These standards are most often used in testing
preparations that have not been heated during the
manufacturing process. Standards 9 through 18
are solutions of ferric chloride and cobalt chloride;
they are darker and are used to test varnish, oil
and resin preparations which have reached full
color development through heating.
Description
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