ChemSpec

FAST AND ACCURATE DETERMINATION of urea (or MUN) in milk.
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Technical Specifications*

Milk type Cow, goat, sheep, buffalo, …
Analytical range 0-40 mg/dl MUN
0-86 mg/dl Urea
0-1.43 mW/dl Urea
Accuracy Cv < 5%
Repeatability Cv < 1.5%
Speed 150 samples/hour
Sample intake 2.5 mL
Voltage 110/220V | 50/60Hz
Dimensions (DxWxH) 61,2 x 67,6 x 38,4 cm
Weight 23 kg
Connected to the local database and remotely accessible

*Specifications subject to change without any prior notice.

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Automated Urea Analysis

The ChemSpec 150 has been specifically designed for the determination of urea (or MUN) in milk. Accurate, compact, fast & reliable, the ChemSpec 150 is the system of choice for milk urea analysis.

  • Fully automated & compact,
  • Capable of analyzing over 150 samples per hour,
  • Very low cost per sample,
  • Touchscreen operation,
  • Enzymatic methodology,
  • Colorimetric Measuring Principle.
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Technical overview & principle of operation

The ChemSpec 150 utilizes a modified Berthelot reaction to determine the level of urea in milk.

  • A small amount of milk is automatically dispensed in a well thermostated at 40°C. It is then split enzymatically with urease into ammonia and carbon dioxide,
  • After an incubation time, dye and activator solutions are added to form a green complex. The color intensity is proportional to the ammonia concentration which is directly proportional to the urea content in the milk.
  • The green color intensity is measured spectrophotometrically in a trans-reflectance cell.
  • The addition of a catalyst in the dye speeds up the reaction, intensifying the green color development, thus enhancing the sensitivity of the method.
  • The use of a highly precise sample dispenser allows the ChemSpec 150 to bypass a pre-dilution step. The milk is simply diluted in the chemicals used to generate the reactions. This dilution reduces the opacity of the medium, thus improving the spectrophotometric measurement and preventing interference from other milk components.
  • By alternating measurements of natural ammonia and converted ammonia, the ChemSpec implements a two-channel FIA. The difference signal from the two measurements allows the ChemSpec to precisely determine the urea concentration.
  • A carrousel incubator allows analysis overlap, yielding a capacity of 150 samples per hour.
5

Technical Specifications*

Analytical range 0-40 mg/dl MUN
0-86 mg/dl Urea
0-1.43 mW/dl Urea
Milk type Cow, goat, sheep, buffalo, …
Accuracy Cv < 5%
Repeatability Cv < 1.5%
Speed 150 samples/hour
Sample intake 2.5 mL
Voltage 110/220V | 50/60Hz
Dimensions (DxWxH) 61,2 x 67,6 x 38,4 cm
Weight 23 kg
Connected to the local database and remotely accessible

*Specifications subject to change without any prior notice.

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MAINTENANCE & SUPPORT

Customer service has always been a priority for Bentley Instruments. We guarantee our customers prompt assistance for optimum productivity.

In order to guarantee the highest level of productivity, our team of technicians takes care of installation, training and diagnostics remotely and locally.

The FreshDesk platform is available by registering and gives you access to our e-service platform: e-ticket service to ask our engineers about your problems, technical databases (equipment history, technical notes, manuals...), diagnostic tools (problem/solution), worldwide network of production engineers and after-sales service for a quick and interactive assistance at your disposal at any time.

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+33 (0)2 85 52 90 73
Fax : +33 (0)3 20 09 87 12
info@bentleyinstruments.eu

BENTLEY INSTRUMENTS INC.

4004 Peavey Rd Chaska
Minnesota 55318 - USA
+1 952 448 7600
+1 952 368 3355
info@bentleyinstruments.com