Shanghai Peiou Infrared Quartz Digestive Furnace SKD-20S2

Scope of application: Can be used in agriculture, forestry, environmental protection, geology, chemical industry, food and other departments, as well as in higher education institutions and research departments for digestion of plants, seeds, feed, food, soil, ores, etc. Features: 1. Temperature control, elimination of digestion wall hanging phenomenon, good sample reducibility

model	SKD-20S2
control mode	single-chip microcomputer
Heating method	Infrared quartz heating tube
Number of furnace holes	20hole
Temperature Control Range	room temperature-680℃
heating rate	20Minutes（400℃ unloaded)
Temperature fluctuations	±1℃
voltage	AC220V
power	1950W
Digestive tube size	42mm*300mm

quartzPrinciple of structural heating

Our company uses pearl milk white quartz tubes with electric heating materials to provide excellent and reliable far-infrared radiation characteristics for our far-infrared quartz heating elements,After power on,Infrared and visible light emitted by hot materials97%Blocked by the milky white tube, absorption causes the temperature of the tube wall to rise, resulting in vibration of silicon oxygen bond molecules and far-infrared radiation,This makes97%Visible light and near-infrared light can be converted into far-infrared radiation. Overcoming the drawbacks of using only transparent quartz glass to transmit visible and near-infrared light,Thus effectively converting electrical energy into far-infrared radiation..

2. Infrared quartz programmed heatingDigestion furnacecharacteristic

The far-infrared quartz heating element uses a milky white quartz tube as the infrared radiation source,No coating, no pollution, no harmful radiation, good chemical stability, high resistance warm,Diverse shapes, long-term use without deformation, good thermal stability, and feasible heating temperature selection. Long term use of radiation performance does not degrade. And it has a long service life, a reasonable structure, minimal thermal inertia, and is easy to use.

Attachment: Precautions for Choosing a Digestive Furnace

Precautions for choosing a digestion furnace

The digestion furnace plays a very important role in protein detection, and choosing a suitable digestion furnace is a prerequisite for accurate detection. Several points should be noted for the indicators of the digestion furnace:

1 The temperature should be constant, with minimal fluctuations, and each batch of samples should have consistent digestion time,

2 The temperature difference between each sample well should be small to avoid significant differences in sample digestion time, which may cause differences in digestion.

3 Can effectively control the process of temperature changes to avoid sample wall sticking during digestion.

4 Effective insulation measures to improve the stability of temperature inside the furnace chamber

* Effective temperature control enables digestion to be controlled as needed, and if there is program temperature control, it can effectively achieve the desired temperature.

* A good insulation measure, 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

5 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.

*Infrared heating relies on thermal radiation to heat the sample, characterized by fast heating, low thermal inertia, and accurate temperature control. Generally used for digestion of samples with high requirements. For example, there is a faster rate of heating and cooling. Program heating allows users to choose a heating curve or segmented heating based on the characteristics of the sample, which is beneficial for the digestion of the sample and reduces the phenomenon of sample wall hanging, greatly improving the accuracy of sample digestion

* Aluminum ingot heating relies on the conduction of heat energy from the aluminum ingot to the sample. Its characteristics include slow heating, large thermal inertia, stable temperature, and good temperature consistency between each sample well due to the good thermal conductivity of the aluminum ingot. 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 heat from graphite to the sample. Its characteristics include high thermal inertia and slow heating. Due to the poor thermal conductivity of graphite (compared to aluminum ingots), the temperature between sample pores is uneven, which can easily cause a large difference in digestion time between samples. Some samples have too long digestion time, while others have too short digestion time. Affects the accuracy of data. However, due to the low cost of graphite materials (compared to aluminum ingots) and the cheaper cost of graphite digestion furnaces, it has certain appeal to some low-end users. The imported Kaishi digestion furnace does not use graphite as heat conduction.

Attention should be paid to the protection function of the digestion furnace: heating control and parameter setting should be controlled differently, with overcurrent, leakage, and short circuit protection.