Kjeldahl Nitrogen Analyzer

Introduction

The Kjeldahl method or Kjeldahl digestion in analytical chemistry is a method for the quantitative determination of nitrogen contained in organic substancesplus the nitrogen contained in the inorganic compounds ammonia and ammonium (NH3/NH4+). Without modification, other forms of inorganic nitrogen, for instance nitrate, are not included in this measurement. Using an empirical relation between Kjeldahl nitrogen content and protein content it is an important method for analyzing proteins. This method was developed by Johan Kjeldahl in 1883. The Kjeldahl method's universality, precision and reproducibility have made it the internationally recognized method for estimating the protein content in foods and it is the standard method against which all other methods are judged. It is also used to assay soils, waste waters, fertilizers and other materials. It does not, however, give a measure of true protein content, as it measures nonprotein nitrogen in addition to the nitrogen in proteins.

Application Areas

The Kjeldahl nitrogen analyzer uses the Kjeldahl method to detect the content of ammonia, protein nitrogen, phenol, volatile fatty acid, cyanide, sulfur dioxide, ethanol, etc. in grains, food, feed, water, soil, sludge, sediment and chemicals. . It has a very good price-performance ratio, and only the titration process requires manual operation, which is very suitable for routine testing by laboratories and inspection institutions. It is widely used in the analysis of nitrogen or protein content of food, crops, seeds, soil, fertilizers and other samples.

 

 

 

Specification of Product

 

Model	DW-ATN-100	DW-ATN-300
Picture
Determination of varieties	Food, food, dairy, beverages, feed, soil, water, drugs, sediments and chemicals	Food, food, dairy, beverages, feed, soil, water, drugs, sediments and chemicals
Measuring range	0.1mgN~200mgN	0.1mgN ~240mgN(nitrogen content 0.02% ~95%)
work mode	semi-automatic	Automatic
Determine the amount of sample	Solid ≤ 5g / unit Liquid ≤ 15ml / unit	Solid ≤ 5g / unit Liquid ≤ 15ml / unit
Recovery	better than 99.5%	better than 99.5%
Repeatability	<1%	≤ ±1%
Distillation rate	3 to 7 minutes / sample	3 to 7 minutes / sample
Cooling water consumption	2L / min	1L-2L / min
Power supply	220V 50Hz	220V 50Hz
Power	2000W	1600W
Dimensions	380 * 330 * 820mm	775*380*330*mm
Weight	26kg	28kg

 

KDN-D series digital-display temperature-controllable digestion furnace have models of 4 holes, 8 holes, 12 holes and 20 holes for user to choose, depending on their detection amount. SO2 and other poisonous gas escaping from digestion furnace will be discharged by relevant waste gas absorption system, guaranteeing the safety and cleanness of your lab.

 

Name	Model	Picture	Specification
Digital display temperature controllable digestion furnace	KDN-04D		4 samples/batch
	KDN-08D		8 samples/batch
	KDN-12D		12 samples/batch
	KDN-20D		20 samples/batch

 

 

Product Display

 

 

 

 

Why Choose Us?

1. On-time Delivery

  Our on-time delivery rate is 100%. Delivery time is usually 7-15 working days after payment.

 

2. Rich Export Experience

  Drawell is founded in 1999, and has more than 20 years of exporting experience. We have a professional sales team of around 30 peoples.

Our main markets are South Africa, Middle East, Southeast Asia, Europe, etc. So far, we have established business relationships with more than 100 countries.

 

3. Quick Service

  For the before-order stage, our professional sales team will respond to your inquiry within 24 hours whether it is on working days or not.

  For the order-running process, we will keep track of your order. You don’t have to worry about the quality or production time.

  For the after-sales stage, our technical guidance is free and ready forever. If you have any problems, our after-sales team and engineers will help you solve it, and you will get an answer within 24 hours.

 

 

Order Process of Vacuum Drying Oven

 

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Payment

● More Payment terms could be provided (T/T, PAYPAL, WESTERN UNION)

 

 

Logistics 

 

 

FAQ

1. Are you a factory or trading company?

- We are a factory.

2. What is the MOQ?

- Normally, MOQ is 1 piece

- If there is no stock, the general MOQ are in a big difference between different products. But the quantity still can be negotiated.

3. Can we ask for a sample from your company?

- Sample is available, but we do not provide a free sample.

4. Do you provide OEM service?

- OEM service is available with the customer's brand.

5. Which payment can be acceptable?

- We accept the payment by T/T, Paypal, Western Union, etc.

6. How about your delivery time?

- Generally, it will take 7-15 working days after receiving your advance payment. Depend on the quantity.

7. What after-sales service do you provide?

- We could provide Online instruction; Real-time support by video call or voice chat; During warranty time, we can send product accessories when you need them for free; Technical guidance is free and ready forever. 

8. How long is the warranty?

- 1 year. it can be negotiated if you need an extended warranty.

9. If you have other questions, you can contact us through:

- Email: sales08@drawell.com.cn

- Tel: 008613320353102