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Quality Control
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At New Directions we firmly believe that Quality Control is of utmost
importance and it is imperative that the most meticulous tests are carried
out for every product in our range. Uncompromising quality is a responsibility,
which we take seriously. New Directions' commitment to quality is coordinated
by our in-house aroma therapist, chief chemist and quality control chemist.
The most rigorous processes are implemented to determine the purity and
potency of sourced oils. By maintaining this intense level of quality
control and developing new methods and techniques, New Directions can
ensure superior products.
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GLC
TESTING : One of the most sophisticated methods of testing, Gas
Liquid Chromatography ensures that the most irregular types of adulterants
can be found. Every batch of essential oil received must pass this analysis
before reaching you.
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VISUAL
AND SMELL TESTS : Sensory tests are the initial tests conducted.
The translucency, colour, viscosity, solubility and smell of the oil have
been tested to maintain the quality of an optimum-grade essential oil.
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SPECIFIC
GRAVITY TESTS : Specific gravity is the density of a substance
divided by the density of water. Since water has a density of 1 gram/cm3,
and since all of the units cancel, specific gravity is the same number as
density but without any units.
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REFRACTIVE
INDEX TESTS : The ratio of the velocity of light in a vacuum to
its velocity in a transparent specimen. The index of refraction is related
to the physical structure of the medium through which light is passing.
For this reason, the index of refraction is a characteristic of substances
that can be employed in identifying unknowns. The higher the refractive
index, the greater the amount of dispersion, which increase the brilliance
of a material.
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ACID
VALUE TESTS : The amount of free acid present in fat as measured
by the milligrams of potassium hydroxide needed to neutralize it.
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HYDROXYL
VALUE TEST : A measure of hydroxyl (univalent OH) groups in an
organic material.
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IODINE
VALUE TEST : Also called Iodine Number, a measure of the degree
of unsaturation of an oil. The amount of iodine, in grams, that is taken
up by 100 grams of the oil. A low iodine value implies a high degree of
saturation.
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SAPONIFICATION
VALUE TESTS : The saponification value is the amount of alkali
necessary to saponify a definite quantity of the sample. It is expressed
as the number of milligrams of potassium hydroxide (KOH) required to saponify
1 gram of the sample.
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HEAVY
METAL TESTS : Lead, mercury and arsenic are tested to be free of
detectable levels of these heavy metals.
Combining these tests ensures that the physical & chemical parameters
of the oils are thoroughly examined. The thorough and continuous liaising
between in-house chemists and aromatherapist ensure that oils that fail
these stringent tests are discarded immediately. The result of these tests
guarantee that our customers obtain the greatest level of confidence in
New Directions and receive only the highest quality products. We welcome
our clients to visit our laboratory and see our quality control systems.
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CLEAN
ROOM : Products are filled in dust free evironment
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