Portafilter baskets - how are they measured / sized

[G-Dog]

Hi All,

I'd like to try a slightly larger basket on Isomac Tea, and am wondering how the sizes are calculated. I have put my empty double basket on a scale, zeroed the scale, then filled with ground coffee to my normal level, and weighed it as 21g of coffee. How do I work out what the actual size of my basket is?

Thanks

[onewheel]

I'm guessing that would make it a double. Based on precision basket sizing, 21 grams sounds like an overdosed 20 gram basket. Kinda hard to determine what you mean by "normal level". A triple basket would be 22 grams.

[G-Dog]

Thanks. The basket came with the machine as the double basket, so 20g sounds right. My "normal level" is probably slightly overdosed. I'll look for a triple.