No, but using a little heat (warm 50-60 degrees) will help. to dissolve easily and fasterIn part B, does it need heat to dissolve both substances?
Yes, yes. or warm in part B together Use a short heat, do not need to be long and do not heat more than 60C, it's okay.If we need to use heat in part B, can I use activated resocinol in the last step?