BUCHI KjelDigester K-449 - Manual (Page 35)

6 – 35 Operation Manual KjelDigester K-446/K-449
6 Operation
6 Operation
WARNING
Risk of poisoning from contact with or ingestion of harmful substances
and fumes at use!
Serious injuries or death can result.
1. Before operation, check the device for correct assembling.
2. Before operation inspect sealing, springs glass parts and hoses for good
condition and tightness.
3. Exchange worn out or defective parts.
4. Withdraw released fumes and gaseous substances by a Scrubber or water
jet pump.
5. Dispose condensate in tubings and glassware safely after use.
6. Do not inhale digestion fumes.
CAUTION
Risk of cuts from broken glass and sharp metal parts!
Minor or moderate cuts can result.
1. Handle glass parts with care.
2. Visually inspect every glass part before mounting.
3. Wear protective gloves when touching cracks or bits of broken glass.
6.1 General application information
Typically 15 – 20 mL of H
2
SO
4
is used for a sample amount of approx. 1 g of organic material.
For weighed portions over and above this, approx. 3 – 5 mL of H
2
SO
4
(5 – 10 mL for greases and
mineral oils) must be used additionally for each additional gram of organic material.
WARNING
Risk of burns from corrosives!
Serious injuries or death can result.
1. Observe all MSDS of the used chemicals.
2. Handle corrosives in well ventilated environments only.
3. Always wear protective goggles.
4. Always wear protective gloves.
5. Always wear protective clothes.
6. Do not use damaged glassware.