above bottles labeled 1 NTU, 10 NTU, 100 NTU and 1,000 NTU show actual
concentrations in Nephelometric Turbidity units of formazine in
turbidity-free water. As you
can see, the human eye can barely see the difference between
concentrations of 1 and 10 NTU. McNab
turbidity measuring devices are so sensitive they can detect the
difference between these two concentrations in 1000-part increments.
photo to the right illustrates how McNab instrumentation can measure
concentration as found in an actual process situation.
The human eye is unable to detect light passing through this
organic fibrous concentration. McNab turbidimeters can not only see through it, but also
quantify its concentration, thereby allowing plant personnel to have an
immediate evaluation of the constituents passing through the pipe.
The example shown here has a concentration of 106,000 ppm (10.6%)
by weight; by volume concentration is
700,000 PPM (70%.)
is critical that you evaluate process changes and variations in key
materials as they occur.
color and particle concentration are major considerations when it comes to
your customers acceptance of your product.
is important to minimize product rejections and still meet your customers'
instruments are important to your company's operation.
They solve concentration and color problems from inspection of
in-process material to final quality assurance, providing you with
substantial cost savings and documentation for QA programs such as ISO
9000 and others.
turbidity instrumentation provides across-the-pipe measurement without
sampling, in real-time and under actual process conditions. These devices
successfully perform with centrifuges, separators, filters, heat
exchangers, decanters, reactors, microfiltrators, demineralizers,
thickeners, scrubbers, collectors, precipitators, reverse osmosis units or
particle blending techniques in both pilot and full-production plants.