Shanghai Peiou Infrared Quartz Digestive Furnace SKD-20S3

How to choose a digestive furnace?

The digestion furnace plays an important role in protein detection. How to choose a suitable digestion furnace?

The indicators of the digestion furnace should pay attention to the following points:

*Effective temperature control is necessary. To enable sample nitrification, temperature is required. If there is a temperature control program for the digestion furnace, it can effectively meet the needs of the sample.

*Good insulation measures are required. If the insulation material is weak, it will inevitably cause temperature instability. A thicker insulation layer for the instrument is necessary for temperature stability. Therefore, the thickness and material of insulation materials are important indicators

*The selection of heating element and heat carrier can be based on the user's needs to choose different heat carriers. Next, we will discuss the selection of heating elements and heat carriers. There are mainly two good ways to heat up now

#Infrared heating relies on thermal radiation to heat the sample. The characteristics are: fast heating, small thermal inertia, and accurate temperature control. Generally used for nitration of samples with high requirements. For example, there are high and fast heating and cooling requirements. Programmed heating allows users to choose a heating curve based on the characteristics of their sample, or to select segmented heating, which is more conducive to the digestion of the sample. Thereby eliminating the phenomenon of sample wall hanging and greatly improving the nitrification efficiency of the sample

#Aluminum ingot heating relies on the aluminum ingot to transfer heat to the sample. Characteristics: Slow heating, large thermal inertia, stable temperature, and good temperature consistency between each sample well due to the good thermal conductivity of aluminum ingots. Widely used as a heat carrier in digestion furnaces, but it should also be noted that even a thin aluminum ingot cannot maintain a constant temperature. Therefore, when choosing an aluminum ingot digestion furnace, the thickness of the aluminum ingot is also an evaluation indicator.

#Graphite heating relies on the conduction of graphite to the sample volume. Characteristics: Large thermal inertia, slow heating, poor thermal conductivity of graphite (compared to aluminum ingots), resulting in uneven temperature between sample pores, which can easily lead to prolonged nitration time between samples. However, due to the low cost of graphite, graphite digestion furnaces are cheap and have a certain appeal to some low-end users.

In addition, attention should be paid to the protection functions of the digestion furnace: temperature stability and uniform protection, overcurrent, leakage, and short circuit protection.

Brief Introduction

Infrared quartz programmed heatingDigestion furnacecharacteristic

1The heating element (module) adopts infrared heating, quartz tube radiation, strong acid and alkali resistance, anti explosion, and long service life2The furnace hole temperature and rate are continuously adjustable, with fast heating speed and no wall hanging

3The heating area of the digestive tract is large, the temperature difference is small, and the consistency of sample digestion is good

4The instrument has overcurrent protection and leakage protection

5Adopting dual switches, the power supply and heating element are controlled separately, making it easy to set safety parameters

6The instrument comes with a stainless steel drain cover as standard, which prevents the generation of pollutants during the digestion processSO2Wait for harmful gases to be discharged through the sewage pipe and suction pump, effectively suppressing the escape of harmful gases

*Eliminate wall hanging*
1、 Overview:
Infrared quartz digestion furnace20S3Can be used in agriculture, forestry, environmental protection, geology, chemical engineering, food and other departments, as well as in higher education institutions and research departments for nitrification of plants, seeds, feed, food, soil, minerals, etc
2、 Technical indicators:
Infrared quartz digestion furnace
modelSKD-20S3

*control mode liquid crystal display(at regular time+nStep program heating stage

*Heating method Infrared heating, quartz radiation
Number of furnace holes 20hole
*Temperature Control Range Room temperature -680℃

heating rate 20Minutes（400℃Preheating)
Temperature fluctuations ±1

Double insulation layer Silica cotton and air double-layer insulation
electricity pressAC220V
* work rate1.95KW

Digestive tract size and material300*42mmQuartz digestive tract
3、 Characteristics:
1 The standard anti riot device prevents wall hanging, the temperature is controllable, and the sample has good reproducibility.

2、The instrument comes standard with a stainless steel drain cover, a lifting frame, an anti-corrosion tray, and is designed to handle the waste generated during the digestion processSO2Wait for harmful gases to be discharged through the sewage pipe and suction pump, effectively suppressing the escape of harmful gases

3、 The heating element (module) adopts infrared heating, quartz tube radiation, strong acid and alkali resistance, and anti explosion, Long lifespan, in line withCEstandard
4、 The furnace hole temperature and heating rate are adjustable, with fast heating speed and no wall hanging
5、 The digestive tract has a large heating area, small temperature difference, good consistency in sample digestion, and high thermal efficiency

6|The instrument has overcurrent protection and leakage protection
7、 Adopting dual switches, power and heating are separately controlled for easy safety parameter setting and energy conservation.
8、 Adopting a new generation LCD temperature controller, the temperature rise curve is displayed in real-time,PIDControl technology, high temperature control accuracy