Cleaning after the determination

Reaction vessel (6.1429.040, 6.1429.050) and air tube (6.2418.100, 6.2418.120, 6.2418.130)

Stability Oxidation Disposable Glassware
Reaction vessels and air tubes are disposable and should not be cleaned and reused. This is because:
  • Removing sample residue is extremely time-consuming and therefore costly.
  • Cleaning procedures that are typically applied damage the glass. The altered glass surface impairs the reproducibility and accuracy of the results.
  • Poorly cleaned reaction vessels lead to scattered and, in some cases, even incorrect results.

Reaction vessel cover (6.2753.107)

Reaction vessel cover for stability measurement (oxidation or thermal stability)
During the determination, the plastic of the reaction vessel cover is contaminated by both the adsorption and absorption of sample components.

We recommend that you take the following steps when cleaning after each determination:

Step 1
Clean reaction vessel cover with hot water, dishwashing detergent, and a brush. Rinse with water.

Step 2
Clean reaction vessel cover with a solvent (acetone, 2-propanol, or an acetone/ethanol mixture (1:1)) and a brush. Rinse thoroughly with deionized water.
  Step 3
 Heat the reaction vessel cover in a drying oven at 80 °C for at least 2 hours. This step is important for releasing and removing absorbed compounds.
   
Dishwasher-safe
You can also clean the reaction vessel cover in a laboratory dishwasher instead of carrying out steps 1 and 2. Carry out step 3 as described above.

Connection tubing (6.1816.010, 6.1839.000)

Connecting tubing for oxidation and thermal stability measurement in fats, biodiesel, and PVC

During the determination, the plastic of the connection tubing between the reaction vessel and measuring vessel (silicone tubing, Iso-Versinic tubing) is contaminated by both the adsorption and absorption of sample components.

We recommend that you take the following steps when cleaning after each determination:


Step 1
Clean connection tubing with hot water, dishwashing detergent, and a brush. Rinse with water.

Step 2
Clean connection tubing with a solvent (acetone, 2-propanol, or an acetone/ethanol mixture (1:1)) and a brush. Rinse thoroughly with deionized water.
  Step 3
 Heat the connection tubing in a drying oven at 80 °C for at least 2 hours. This step is important for releasing and removing absorbed compounds.
   
Dishwasher-safe
You can also clean the connection tubing in a laboratory dishwasher instead of carrying out steps 1 and 2. Carry out step 3 as described above.

Measuring vessel cover (6.0913.130)

Stability Measurement - Measuring vessel cover

Volatile sample components also get into the measuring cell during the determination. There they adsorb on both the plastic surface of the cover and the conductivity measuring cell.

We recommend that you take the following steps when cleaning after each determination:


Step 1
Remove protection ring. Clean the measuring vessel cover with hot water, dishwashing detergent, and a brush. Also thoroughly clean both steel electrodes. Rinse with water. Proceed with the protection ring in the same way.

Step 2
Clean measuring vessel cover with a solvent (acetone, 2-propanol, or an acetone/ethanol mixture (1:1)) and a brush. Rinse thoroughly with deionized water.
Clamp the protection ring back in place.

   
Dishwasher-safe
You can also clean the measuring vessel cover and the protection ring in a laboratory dishwasher instead of carrying out steps 1 and 2

Measuring vessel (6.1428.107, 6.1428.030)

Measuring vessel for stability measurement (oxidation stability, thermal stability)
Volatile sample components also get into the measuring cell during the determination. 

There they adsorb on the surface of the measuring vessel. We recommend that you take the following steps when cleaning after each determination:

Glass measuring vessel (6.1428.030)


Step 1 Clean measuring vessel with hot water, dishwashing detergent, and a brush. Rinse with water.

Step 2 Clean measuring vessel with a solvent (acetone, 2-propanol, or an acetone/ethanol mixture (1:1)) and a brush. Rinse thoroughly with deionized water.
    Dishwasher-safe
You can also clean the measuring vessel in a laboratory dishwasher instead of carrying out steps 1 and 2.

Polystyrene measuring vessel (6.1428.107)


Step 1 Clean measuring vessel with hot water, dishwashing detergent, and a brush. Rinse with water.

Step 2 Clean measuring vessel with a solvent (ethanol or 2-propanol) and a brush. Rinse thoroughly with deionized water.
Note! Polystyrene is not chemically resistant to acetone. Do not use acetone for cleaning.
    Dishwasher-safe
You can also clean the measuring vessel in a laboratory dishwasher instead of carrying out steps 1 and 2.

Foam barrier (6.1451.010) 

Stability Measurement - Foam barrier 6.1451.010
During the determination, the plastic of the foam barrier is contaminated by both the adsorption and absorption of sample components.

We recommend that you take the following steps when cleaning after each determination:


Step 1
Clean foam barrier with hot water, dishwashing detergent, and a brush. Rinse with water.

Step 2
Clean foam barrier with a solvent (acetone, 2-propanol, or an acetone/ethanol mixture (1:1)) and a brush. Rinse thoroughly with deionized water.
  Step 3
 You can also clean the connection tubing in a laboratory dishwasher instead of carrying out steps 1 and 2. Carry out step 3 as described above..
   
Dishwasher-safe
You can also clean the connection tubing in a laboratory dishwasher instead of carrying out steps 1 and 2. Carry out step 3 as described above.

Oil separator (6.2753.200)

Oxidation Stability - Oil separator
During the determination, the oil separator (body and base) is contaminated by both the adsorption and absorption of sample components. 

We recommend that you take the following steps when cleaning after each determination:


Step 1
Clean body and base with hot water, dishwashing detergent, and a brush. Rinse with water.

Step 2
Clean body and base with a solvent (acetone, 2-propanol, or an acetone/ethanol mixture (1:1)) and a brush. Rinse thoroughly with deionized water.
  Step 3
 Heat body and base in a drying oven at 80 °C for at least 2 hours. This step is important for releasing and removing absorbed compounds.
   
Dishwasher-safe
You can also clean the oil separator (body and base) in a laboratory dishwasher instead of carrying out steps 1 and 2. Carry out step 3 as described above.