Protein Test Systems
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Protein Testers
Low Cost Protein Test Colorimeters
 

Proven Technology Since 1960

Quick, Easy, Affordable Total Protein Analysis with Non Hazardous Chemicals

 
UDY Advantages:  
  • High Correlation with Kjeldahl, Combustion 99+%
  • Direct Protein Readout (%)
  • Easy Operation
  • System can be Customized to your Needs, Budgets, etc.
  • Non Hazardous Chemicals
  • Modest Cost Per Test
  • Precise, Accurate and Reproducible
  • State of the Art Electronics and Optic System
  • Optional UDY "Assist" Software
  • Uses Proven Dye Binding Technology
  • Applicable to Many Different Commodities
  • 110v or 220v 50/60 Hz Available

    Milk Protein System (MKP)  
    Protein Test
 

Some Typical Applications:
Alfalfa
Alfalfa Haylage
Barley
Beans
Bermuda Grass
Blue Grass
Caseinate-Pwd.
Cheese-Hard
Chickpeas
Corn
Corn Silage
Cottonseed Meal
Cowpeas
Eggs
Fishmeal
Gainesburger
Graham Cracker
Grass Peas
Lentils
Linseed Meal
Malted Barley
Meat - Hi Lean
Meat - Lo Lean
Milk - Fluid Prod.
Milk - Powders
Mungbeans
Mustard Meal
Mustard Seed
Oats
Oat Groats
Orange Juice
Peanut Meal
Peas
Pigeon Peas
Rape Seed/Meal
Rice
Roman Meal Bread
Rye
Safflower Meal
Sesame Meal
Sorghum (Milo)
Soy Beverage
Soybean Hulls
Soybean Meal
Soybeans
Sunfower Meal
Triticale
Urd Beans
Waste Water
Wheat
Wheat-Flour
Wheat Germ Meal
Wheat Gluten
Whey/Milk Based Beverages
Whey-Delactose
Whey-Fresh Pwd.
Whey-Fresh Vat
Whey-Prot. Conc.
Yeast (Torula)
 
Model
Application
Instruments & Main Accessories Needed
Accuracy & Speed
MKP
Protein in milk, soy, OJ & other liquids.
UDY Colorimeter, Syringe Pipet, Electronic Balance.
0.02% Protein accuracy; 30 second analysis*.
MT-DP
Protein in all meats & dairy products.
UDY Colorimeter, Reagent Dye Dispenser, Electronic Balance, Blender & Syringe Pipet.
0.2% Protein accuracy typical; 30 second analysis*.
SSP
Protein in grains, forages, etc. Single sample fast test.
UDY Colorimeter, React-R-Mill, Reagent dye Dispenser, Electronic Balance, Cyclone Sample Mill.
0.2% Protein accuracy typical; 2 minute analysis*.
MSP
Protein in legumes, oilseeds, etc. Multiple sample testing.
UDY Colorimeter, React-R-Shaker, Reagent Dye Dispenser, Electronic Balance, Cyclone Sample Mill.
0.2% Protein accuracy typical; Average time per sample, 1 minute*.
*excluding sample preparation
Main Accessories:
Mills Preservative React-R Reagent Dispensers Balances Assist Software
Mills UDY Pol
Preservative
React-R-Shaker
React-R-Mill
Reagent Dispensers Balances &
Blenders
Optional "Assist" Software
 
Principle of Protein Measurement
Protein measurements are made by mixing weighed samples with known volume of Reagent Dye Solution containing an excess of Acid Orange 12 dye. Proteins in the sample react with the dye to form a precipitate. The remaining unreacted dye concentration is inversely proportional to the protein content of the sample.

The UDY Colorimeter is used to measure the dye concentration and display the percent protein in samples directly. Because a flow-thru cuvet is used, the cuvet does not require washing or rinsing. Sample bottles may be reused without cleaning between samples This measurement does not require calibration with standard samples because Acid Orange 12 dye is easily purified and serves as its own primary standard.

Milk and meat homogenates react in seconds with simple shaking. Dry samples, such as grains, react slowly, but use of the patented React-R-Mill enables a complete reaction to be achieved within one minute. Total analysis time can be as short as 30 seconds for milk and 2 minutes for wheat.

U.S. Patent numbers 3010666, 3010614 / * U.S. Patent number 3754715

 

Basic Steps: Fluid Milk & Other Liquids
Protein Measurement, 3 Easy Steps
Step 1 Step 2 Step 3
1. Aspirate or weigh an aliquot of
milk & transfer into sample bottle.
2. Dispense Reagent dye into
sample bottle. Shake 10 seconds.
3. Squeeze-filter 25-30 drops into colorimeter cuvet and read % Protein Directly.
  
All Meat & Dairy Products Protein Measurement, 4 Easy Steps
Step 1 Step 2 Step 3 Step 4
1. Homogenize sample as
needed using blender.
2. Remove an aliquot of
homogenate with Syringe
Pipet, or Weigh into Bottle.
3. Add Reagent Dye
Solution to Aliquot. Shake
10-15 seconds.
4. Filter into colorimeter cuvet
and read % Protein directly.
  
All Commodities Protein Measurement, 4 Easy Steps
Step 1 Step 2 Step 3 Step 4
1. Weigh out specified
amount of finely ground
sample.
2. Dispense Reagent Dye
into React-R-Tube. Add
sample.
3. Shake for specified time
using React-R-Mill.
4. Filter directly from
React-R-Tube and read %
Protein.