Stanford Research SR540 | $995 - Refurbished-Warranty
SponsoredOptical Chopper. Chop frequency: 4 Hz to 400 Hz (5/6 slot blade), 400 Hz to 3.7 kH…Site visitors: Over 10K in the past monthDual-beam experiments · Handles optical chopping · High frequency stability
FRESH. ROASTED. COFFEE. | Direct Trade | Fair Trade
SponsoredIf You Love Coffee Like We Love Coffee, You'll Love FRC. More Than 70 Varieties! …15% off organic coffees · Pure flavor selection