Some of you wanted me to look at IMS filters in my last post. So here is a VST precision vs IMS competition filter in both a light optical and electron microscope :
Amazon.com: IMS Competition E-61 Precision Filter Ridgeless Basket 18/22 gr - B70 2TC H28.5 E
Filter Baskets, Tampers, and the Quest for Better Espresso — meticulist
IMS vs Pullman vs VST vs Decent stock basket | Which filter basket should you choose? - YouTube
Baskets IMS v VST | Coffee Forums
Let's talk Baskets IMS, VST, Stock basket pros and cons, your options?? : r/espresso
Do IMS or VST baskets make a difference in the cup on a Classic? And is one better? | Coffee Forums
Stock Breville, VST, DE, and IMS Barista Pro Nanotech Filter Basket Extraction Test. 18.5 grams in 35 grams out. The IMS definitely tasted the best with this specific coffee. Rwanda SO. : r/espresso