What type of hoses should not be used for draining, filling, or sampling Askarel?

The correct answer, indicating that rubber or plastic hoses should not be used for draining, filling, or sampling Askarel, is based on the properties of these materials in relation to their chemical compatibility with Askarel. Askarel is a synthetic insulating fluid that can be detrimental to certain types of hoses.

Rubber and many types of plastic can deteriorate or degrade when in contact with Askarel due to chemical reactions, leading to the release of harmful substances or the weakening of the hose itself. The flexibility and permeability of rubber and plastic can also increase the risk of leaks or contamination during the draining or sampling process.

Metal hoses, on the other hand, are generally resistant to chemical reactions and provide a durable and safe option for handling fluids like Askarel. Silicone hoses, while they can have limitations, are known for their higher resistance to various chemicals compared to standard rubber or plastic hoses. Similarly, glass hoses are inert and resistant to many chemicals, making them a safer choice as well.

Therefore, the recommendation to avoid rubber or plastic hoses when dealing with Askarel is crucial for ensuring safety and maintaining the integrity of equipment and the substance being handled.