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Moisture Content Determination
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Moisture – What
What is Moisture? Scientifically stated, moisture is defined as the mass
of LIQUID MATTER per unit mass of dry material Simply stated, moisture is Liquid Matter diffused in a
relatively small quantity
Types of Liquid Matter Water Fats Oils Alcohols Organic Solvents Products of Decomposition
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Moisture – Why Measure Contd...
Why measure the Moisture Content? Contd... Positive Attributes of Moisture
Makes material processing possible & adds efficiency
Moisture is used as a binder in bulk material processing & homogenizing
Natural lubrication in organic materials
Negative Attributes of Moisture Dictates shelf life Makes material susceptible
to microbial & fungal activity Causes oxidation & chemical reactions during material storage
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Moisture Analysis
What is Moisture Analysis? Determination of Moisture Content Many users confuse moisture content as
water content, this is not true Moisture content determination does not
make a distinction between water & other
volatile components
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.
Moisture Analysis
THE OHAUS SOLUTION
TO
MOISTURE CONTENT DETERMINATION
MB45 MOISTURE ANALYZER
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Models
Model MB45 MB35
Capacity (g) 45 35
Readability (g) 0.01%/0.001 0.05%/0.005
Temperature
Range
50DC to 200DC with 1DC increments
50DC to 160DC with 5DC increments
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MB45 MOISTURE ANALYZER
HEATING AT THE SPEED OF LIGHT Circular Type Halogen Heating Technology
allows heat to penetrate uniquely from all sides
in to the sample. Uniquely designed GOLD REFLECTIVE interior
test area creates uniform distribution of heat to increase performance while decreasing test
time Precision Heating – temperature controls are
incrementally controlled by the software for test accuracy Lightening Startup – test area reaches full temperature in less than a minute Rapid Results – performs upto 40% faster than
conventional IR methods
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MB45 MOISTURE ANALYZER
MB45 THE ADVANCED MOISTURE ANALYZER Technology : Halogen – 400W Lamp, 4000 Hrs Life Capacity : 45g Readability : 0.001g Repeatability : 0.05% for 3g sample & 0.015% for 10g
sample Moisture Range : 0.01% to 100% Temperature Range : 50º to 200º C in 1º C increments Timer : 1 to 120 minutes in increments of 10 seconds Display : 128 x 64 pixel Graphical Backlit LCD Displays : % moisture, % solids, time, temperature,
weight, test ID & drying curve
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MB45 Menu Setup & Display
MB45 Menu Setup
* Very easy to set parameters
* Ease of use
* Easy to save parameters
MB45 Display
* Best Display in Industry
* Clear Visualization of all
Parameters, Information,
Results & On-Line curve
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MB45 Menu Setup & Display
* On-line Curve is for understanding Behavior of sample analysis- How much moisture loss is happening at time & temp. differentiation.
* This feature also helps to understand sample analysis of unknown
samples.
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MB45 MOISTURE ANALYZER MB45 THE ADVANCED MOISTURE ANALYZER Contd...
Test Library to Store, Edit & Run Tests Powerful – program & recall up to 50 Drying Procedures Easy – once programmed, simply select & run the test Flexible – allows simple test editing to find best test
results
Four selectable automatic drying profiles allow for easy one step drying, simply set the temperature and time, and begin
Enhanced Shut-off options – Timed, Manual, Auto (A30,
A60, A90) & Auto free Statistical function for simple tracking and recording of
standard deviation over time. The MB45 does all the calculations and provides the end result. Great for Quality Control and
Assurance applications
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MB45 Market Segments Pharmaceutical
Excess moisture will adversely affect the product stability, reactivity & effectiveness
Most pharma compounds & molecules are hygroscopic
Bio-technology Excess moisture will adversely affect the product
stability, reactivity & effectiveness Enzymes would loose the enzymatic properties Excess moisture could lead to microbial & fungal
growth Vaccine Manufacturing
Moisture content should be below 3% in lyophilized vaccines – WHO recommendation
Excess moisture will affect efficacy of vaccine, shelf life
induce fungal & microbial growth
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MB45 Market Segments Contd...
Chemical Manufacturers Excess mositure would reduce shelf life of end product Inprocess testing of intermediates essential to ensure quality of end product
Food Moisture content critical to economic losses in commodities due to spoilage Moisture loss is rapid in fruit & vegetables and must be monitored Incorrect mositure content results in loss of vitamins, nutritional value & esthetics
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MB45 Market Segments Contd...
Grain / Feed Applications Moisture influences nutritional contents such as protein in grain & feeds Each grain kernel hosts thousands of bacteria & fungal spores. Mositure above 13.5% activates growth & ultimately spoilage and loss
Plastics Moisture in plastics causes many problems
ranging from cosmetic imperfections to stress induced failure
Thermoplastics Resin must be absolutely dry, even minor surface residue causes problems Moisture in the resin causes voids (bubbles) &
weak knit lines in finished parts
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MB45 Market Segments Contd...
Pulp & Paper Moisture influences tensile strenght,
stiffness & elasticity
Tissue Banks Moisture dictates the shelf life of
lyophilized/freeze dried human allograft
tissues Moisture analysis currently done during
freeze drying process as well as at the end of process Moisture analysis currently done by
conventional
oven method – takes up to 3 to 6 hours