Phipps & Bird 960 Model Jar Tester runs in both standard and programmable modes. Features digital readout, stainless steel paddles placed 6 inches apart, regulated variable speeds of all paddles simultaneously, from 1 - 300 rpm, powder-coated steel uniframe chassis, built-in L.E.D. illuminator, anti-glare curtain, and dust cover. The unit holds either round 1000 mL mixing beakers or square 2 L Wagner Floc Jars. Includes 2 L B-Ker² square acrylic jars.