Does all the HPL oil have that same lack of foaming? Even their cheapest PCMO?
Yes. If it foams it does not ship. These devices also have a camera. Every batch of oil has a video recording documenting foam or lack there of that is associated with the batch number.
We helped the manufacturer of the equipment, develop debug and perfect these devices. They were originally programmed per the method, which is pass or fail. It had 10 minutes To dissipate the allowable 50 mL of foam. All we would get was pass and the instrument would hang. They rewrote the software to give us the amount of foam in the amount of time to get to zero in seconds, not 10 minutes.
David