Fristaden Lab Blog

Overhead Stirrers Explained: RPM, Torque, Viscosity, and Mix Time

If you've ever shopped for an overhead stirrer, you've seen the spec sheet: RPM range, wattage, voltage, torque, viscosity capacity. Most buying guides tell you "higher RPM = faster mixing" and lea...

✅ Setting Up Your Lab: A Core Equipment Checklist

New semester means new experiments and for a lot of programs a fresh look at what's actually in the lab. Whether you're outfitting a full classroom or a single homeschool bench, a handful of core i...

Precision vs. Analytical Balance: Which One Does Your Lab Actually Need?

If you've ever compared prices on lab balances, you've probably noticed something strange: two scales that both claim to weigh "precisely" can differ in price by hundreds of dollars. The reason com...

Magnetic Stirrer vs. Overhead Stirrer: Which One Does Your Lab Actually Need?

Almost every lab, kitchen-lab, or production bench hits the same fork in the road eventually: do you reach for a magnetic stirrer or an overhead stirrer? Both are built to mix liquids, but they sol...