Milk Urea Nitrogen
Milk Urea Nitrogen (MUN) content is related to the protein content of animal nourishment and is used to define an adequate diet. The chemical test of urea concentration in raw milk may help to detect fraudulent additions done to increase the protein content of milk.
Instruments to Use
Reagents
R1 (pre-filled in test tube): phenolic derivatives
R2 (in bottle): alkaline solution
Test method
Test type: End Point
Colour reading at 700 nm
Time of test: 3 minutes
It is possible to carry out several test sessions with a maximum of 14 samples.
Calibration can be performed by aligning the test to reference values.
Test principle
The urea is transformed into ammonia from the urease. The ammonium ions react with a phenolic derivative and form a blue-green coloured complex whose intensity, measured at 700 nm, is directly proportional to the concentration of urea in the sample. CDR innovative method simplifies and speeds up the official procedure and uses a microquantity of milk without any preventive treatment.
Sample
Milk as is.
Reagent Kits
The reagents are provided in sealed bags, each containing 10 test tubes. They have a 12 months duration, starting from the production date. Stocking requirements are described on the bag label.
Reagents do not contain dangerous solvents and are ready for use.
| KIT CODE | SAMPLE VOLUME | RANGE |
| *300000 (100 Test) *300004 (10 Test) |
5 µL | 5 – 100 mg/dL |
| Reagent developed by CDR s.r.l | ||||
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Quality System certified ISO 9001 Ed. 2008 |
