Principle and how to use graphite digester

The sample and digestion solution are placed in a digestion tube and digested at a constant temperature, so that the sample can be used for various instrumental analysis and chemical analysis after digestion
.

Digestion sample range: product samples, various water samples, biological samples (blood, urine, hair), cosmetics,
etc.
1.
Digestion of food samples: (1) Move the digester into the kitchen and set it to heat to 120°C.
(2) Absorb 1-10.
0ml of liquid samples (such as liquor, purified water, natural water, etc.
) , add three glass beads) Put the digestion tube on the digestion apparatus and heat it to near dryness at 120℃, add 1.
0ml (the digestion solution is digested to near dryness at 240℃ at constant temperature, remove it and let it cool, and determine the volume).
(3) General Food (such as colored wine, beverage, fruit candy, granules, pasta, porridge, etc.
) Weigh 0.
500-1.
000g sample into the digestive tube, add three glass beads, add 10.
0ml digestive juice, and put the digestive tube into the digestion apparatus Digest at 160°C for about 1-3h) until the digestive juice is clear, digest at 240°C at a constant temperature, remove to cool, and make up to volume for measurement.
(4) Foods containing a lot of fat and sediment (such as meat, sausages, etc.
, soybean oil, milk powder, toffee, chocolate, etc.
) Weigh 0.
300-0.
500g of sample into the digestive tube, add three glass beads, add 10ml of digestive solution, put the digestive tube into the digester at 160 °C for digestion for 3h, if the solution is clear 240 ℃ constant temperature digestion to nearly dry, remove and let cool, make up to volume for measurement.
2.
Digestion of water samples: 1.
00-10.
0ml sample is put into the digestion tube, add three glass beads, and put the digestion tube on the digestion apparatus at 120 ℃ Heat to near dryness, add digestive agent (add 0.
50 ml of digestive agent to clean water, and add 2 ml of digestive agent to sewage), digest at 240°C until it is nearly dry, remove it and let it cool, and measure the volume at constant volume.
3.
Sample digestion: Weigh 0.
200g of Add three glass beads to the digestion tube, add 5.
0ml of digestion solution, and digest on the digestion apparatus at 160°C for 30min.
Digest at 240°C until it is nearly dry, remove it and let it cool, and set the volume to volume for measurement.
4.
Cosmetic digestion: take 0.
100-0.
200g Put cosmetics into the digestive tube, add three glass beads, add 5-10ml of digestive solution, digest at 160°C for 1-2h until the solution is clear, digest at 240°C until it is nearly dry, remove it and let it cool, and measure the volume with constant volume.
The use of graphite constant temperature digestion instrument Matters needing attention: 1.
Please wipe the working surface clean before use, no water droplets, dirt, fouling and other foreign matter residues are allowed on it
.

2.
Place the sample tube
.

3.
Turn on the power, turn on the power switch, the indicator light is on, (set the required temperature value), the instrument is in working state
.

4.
When the instrument is in working state, there should be a special person to take care of it
.

5.
After the work is completed, turn off the power switch and cut off the power supply
.

6.
After the working surface is cooled, handle it as required
.

7.
In order to ensure safety, use a safety power supply with three eyes and a ground wire! 8.
The sample in the test tube should not be too much, so as not to boil over and damage the instrument
.

9.
Cut off the power supply when not working to avoid accidents!