Brewster LF/LFC
The Brewster is a hybrid instrument measuring the fat and/or
casein content in milk. The system is designed for use in
the dairy production area as both a standardizer and pipette
sample tester. The Brewster LF is designed for fluid milk
applications measuring butterfat only. The Brewster LFC is
designed for cheese milk applications measuring butterfat
and casein.
Using patented
laser light scattering technology, the Brewster LFC
discriminates between component particle size to obtain fat
and casein measurements without interference from other milk
components. A closed-loop control system then modulates the
various product flow rates based on fat and casein readings
from the instrument by controlling throttling valves to
achieve the desired C/F ratio in the final cheese milk.
Features and Benefits
Automatic
Adjustment – With a continuous sampling process, the CFS
automatically adjusts for silo composition variations,
saving valuable ingredients and providing product
consistency.
Sample
Pipette – Seamlessly transition from pipe to pipette
with the system’s two sample inlets. This allows for process
standardization and individual sample testing from the same
instrument. Eliminate excessive trips to the lab for
analysis.
Systems
Integration – Seamlessly integrate via Ethernet to
network resources and SCADA applications.
Integrated
Display – Eliminates the need for a dedicated operating
PC.
Automatic
Cleaning – Automated rinse routines provide cleaning of
the instrument, reducing the potential for operator error.
Easy to
Maintain – All common maintenance tasks can be completed
by your operator. A common cleaning agent maintains a low
cost of analysis and eliminates hazardous waste disposal.
Casein
versus Protein – Research shows that casein as a
percentage of protein in milk changes based on many factors
including herd, geography and seasonal variations.
Production based on a direct casein measurement ensures
higher accuracy and profitability.
Technical Specifications
|
Analytical
Range: |
|
|
Fat |
0% -
10% |
|
Casein |
0%
- 8% |
|
|
|
|
Repeatability (%Cv)
|
<
0.50% |
|
Accuracy
(%Cv) |
< 1.0%
|
|
Purging
efficiency |
> 99%
|
| |
|
|
Repeatability (%Cv) |
<
0.50% (raw milk) |
|
Accuracy
(%Cv) |
< 1.0%
(raw milk) |
|
Purging
efficiency |
> 99%
(raw milk) |
Note: Cv
(Coefficient of variation) is equal to the SD (Standard
Deviation) divided by average of reference results
multiplied by 100. Reference methods used are: Röse Gottlieb
for fat, Kjeldahl for protein, and Polarimetry for lactose.
|
Sample
Volume |
10 to
15 ml typical |
|
Sample
Speed |
< 60
seconds per sample |
|
Sample
Temperature |
15 –
40° C |
|
|
|
|
Power
Supply |
120-240 VAC, 50/60Hz |
|
Power
Consumption |
0.5 k
Watts (Maximum) |
|
|
|
|
Other
Utilities |
Compressed Air @ 100 psi |
|
|
De-ionized Water Supply |
|
|
|
Intellectual Property
|
US
Patents: 6407813, 6795183 (others pending)
|
Brewter LF/LFC
Metron's Brewster Analysis
Method |
