Intelligent constant temperature digestion instrumentTechnical parameters:

（1）Temperature control range: room temperature-300℃(Special note: Temperature refers to the temperature of the constant temperature block, and the temperature of the digested sample solution is consistent with the boiling point of the digestion solution.).

（2）Temperature stability:≤2℃.

（3）Number of digestive pores:25Hole, aperture:Φ26mm, applicable to outer diameterΦ25mmThe digestive tract.

（4）Heating power:2000W

（5）Temperature control method: microcomputerPIDControl,LEDDisplay, clear and intuitive.

（6）Heating part material: aluminum alloy

Reagents and equipment:

（1）Digestive fluid: acid reducing High acidity（4：1）

（2）Plastic tweezers or bamboo clips: used for soaking glass equipment10%Extract from nitric acid solution.

（3）Digestive tract: outer diameterΦ25×long80（mm）Flat low hard glass, use a digestive tube before digestion10%Soak overnight to remove acid, wash and dry, or use after drying.

Sample digestion method of intelligent constant temperature digestion instrument:

1Food sample digestion:

（1）Move the digestion instrument into the kitchen and heat it up until120℃.

（2）Liquid sample (such as Baijiu,purified water,Absorb natural water, etc1-10.0ml(Sample into digestive tract),Add three glass beads and place the digestive tract onto the digestion apparatus120℃Heat to near dryness,join1.0ml(Digestive fluid)240℃Dissolve at a constant temperature until almost dry,Remove and cool down,Measurement with a fixed volume.

（3）General foods (such as colored wine),drink,fruit candy,Granules,Noodle food,Congee, etc.) weighing0.500-1.000gSample into digestive tract,Add three glass beads,join10.0mldigestive juice,Put the digestive tract into the digestion apparatus160℃Digestive about1-3h）After the digestive juice is clarified, 240℃Dissolve at a constant temperature until complete,Remove until cold,Measure to a certain volume.

（4）Foods containing a large amount of oil and sediment (such as meat products),sausage,soybean oil,milk powder,toffee,Weighing chocolate, etc0.300-0.500gAdd three glass beads from the sample to the digestive tract,join10mldigestive juice,Place the digestive tract onto the digestion apparatus160℃digestion3h,If the solution has been clarified240℃Dissolve at a constant temperature until almost dry,Remove and cool down,Measure to a certain volume.

2Water sample digestion:

1.00-10.0mlSample into digestive tract,Add three glass beads,Place the digestive tract onto the digestion apparatus120℃Heat to near dryness,Add digestive agent (clean water added)0.50mldigestive,Sewage addition2mlDigestive agent)240℃Dissolve at a constant temperature until almost dry, remove and cool,Measure with a fixed volume and volume.

3Sample dissolution:

Weighing0.200gAdd three glass beads from the sample to the digestive tract5.0mlDigestive solution on the digestion instrument160℃digestion30min.240℃Dissolve at a constant temperature until almost dry,Remove and cool down,Measure to a certain volume.

4Cosmetics digestion:

take0.100-0.200gCosmetics into the digestive tract,Add three glass beads5-10mldigestive juice, 160℃digestion1-2hTo clarify the solution240℃Dissolve at a constant temperature until almost dry,Remove and cool down,Measure with a fixed volume and volume.