SCK-300P With Micro Vacuum Pump
Recently we noticed a number of eBay listings for new low-cost (~$40 – $55), micro vacuum pumps which look like they might work with the SCK-300P. Typically, such small pumps do not have the required air-flow/vacuum pull (>10L/min), however, the specification of those suggested they do. After ordering a few units from China, and two weeks waiting, our testing indicates they actually work OK. A standard 75 mm x 25 mm microscope glass slides is held firmly at speeds up to 5,000+ rpms for 10+ minutes. That performance should fine for most spin coating work.