Here we introduce 3 methods to distinguish between good and bad isogam:
1- The smell of isogam
The easiest way to recognize is through the smell of isogam. In the production of high-quality isogams, polymer or low-quality is used, if in the low-quality sample, mineral powders or non-polymeric materials are used, that is why the low-quality and counterfeit type of isogam has an unpleasant smell similar to industrial diesel (diesel). ) gives.
The sex of isogam
Put your hand on the part of the outer layer of isogam that is not covered, if it is good, nothing will stick to your hand. But if it is of poor quality, small black particles will stick to your hand.
2- Maintenance in the freezer
Cut a small piece of isogam and put it in the freezer, take it out after 2 hours and bend it by hand to an angle of 120 degrees. If the isogam is broken or even cracked when you bend it, the material of the isogam is not good and is of poor quality. But if nothing happened to it, it means that it is a good quality isogam and it is resistant to cold and heat.
Types of isogam
Polymeric isogam using pure bitumen 60-70
The main ingredient in this type of isogam is pure bitumen 60-70 and it has a very high quality compared to blown isogam
Isogam of bitumen It is blown and has a lower quality and a shorter life compared to polymer isogam.
