After extensive research to find a single dose grinder that offers stepless adjustment, low retention and at such an affordable price... We think DF64  Grinder is the answer! - 

 

The DF64  has 64mm flat Italmill hardened steel burrs as standard, the retention figures we obtained are very low with total complete exchange at around 1 gram. The Solo comes with a transparent cup which fits exactly into a 58mm portafilter handle avoiding any spillage, the solo will also hold a portafilter handle hands free.

EASY TO USE:-

• Large adjustment dial, it makes it easy to go from the fine to coarse settings.
• Top burr can be removed without tools for exchange clean, although with such a low retention, this is not necessary.
• The bellows make sure any remaining coffee grounds are extracted from the grinder.

Although principally a single dose grinder the DF64 can accommodate approximately a total capacity of 80 grams with 30 grams in the chamber and 50 grams in the bellows.