1.summary:

To improve the detection speed of protein content determination, the key is to accelerate the digestion and digestion time of the sample. Digital digestive furnace, with beautiful appearance, lightweight structure, and convenient use. The heating element (module) adopts infrared quartz tube, which is resistant to strong acids and alkalis, anti explosion, and has a long service life. Advantages of the instrument: The digestive tract has a large heating area, small temperature difference, good consistency in sample digestion, high thermal efficiency, and is conducive to sample digestion. The temperature control system adopts a new generation of temperature display instrument, which has accurate temperature control and fast temperature rise. Simultaneously, SO overflowing from the digestive tract₂Harmful gases are collected through the sewage collection pipe on the digestion furnace and discharged into the sewer through a filtration pump, effectively suppressing the escape of harmful gases. It takes about 60-90 minutes to digest a batch of samples (depending on the nitrogen content).

Features: Lightweight, efficient, simple, and safe.

2.Working Principle:

The ammonium ions in organic matter are affected by strong heat, catalysts, and concentrated H₂SO₄ Under the action, nitrification generates (NH)₄）₂SO₄

The reaction equation is: 2NH₂-+H₂S0₄+2H+＝(NH₄)₂S0₄　　

Technical Specifications

1Testing varieties: grains, feed, food, dairy products, beverages, soil, water, drugs, sediments, and chemicals, etc.

2Working mode: semi-automatic.

3Measurement quantity: 4/8 samples working simultaneously (selected according to different models).

4Working time: It takes about 60-90 minutes to digest a batch of samples.

(Depending on the sample and nitrogen content)

5．额定电压： 220V/50Hz。

6. Rated power: 1500W

7Tap water flow rate: 4L/min

Sample configuration

Instruments and reagents:

a.Analytical balance: sensitivity 0.0001g; weighing filter paper

bConcentrated sulfuric acid (H)₂SO₄）Chemical purity, content of 95% to 98%, nitrogen free

cCopper sulfate (CuSO)₄.5H₂O）、 硫酸钾（K₂SO₄）: Analytical Pure

Configuration method:

Weigh 0.20g to 2.00g of solid sample or 2.00g to 5.00g of semi-solid sample, or take 10.00ml to 25.00ml of liquid sample (approximately equivalent to 30mg to 40mg of nitrogen), transfer it into a dry digestion tube, add 0.4g of copper sulfate, 6g of potassium sulfate, and 10-20ml of concentrated sulfuric acid (depending on the sample, appropriate defoamers such as peroxide water may be added).

Complete List