Super budget option for 2L - Amazon kozyvacu 8cfm 2-stage rotary vane for under $200. Advertised at 25micron ultimate vac but it pulls down to single digit micron on my bullseye.
Super budget option for 2L - Amazon kozyvacu 8cfm 2-stage rotary vane for under $200. Advertised at 25micron ultimate vac but it pulls down to single digit micron on my bullseye.