Review on 🔬 INTLLAB Analytical Peristaltic Liquid Aquarium by Eduardo Reyes

They work great if you use them within a few weeks of receiving them and keep using them. I have found that if you leave them on for too long the rollers will permanently squeeze the silicone hose and the only way to open it again is to push something through the hose with considerable force or just swap out the silicone hose. In terms of accuracy, reproducibility, and reliability, I've found them all to dispense around 1mL per second while running at 12V, within the range of around 0.2mL. Pumps tend to be fairly constant, so that someone pumping 1.2 ml per second almost always pumps between 1.1 and 1.3 ml per second. I should note that I'm using a graduated syringe and an Arduino script as my measurement, so take those numbers with a grain of salt. If you need less than 1mL accuracy, be sure to evaluate the performance of each pump and calibrate the dosing schedule accordingly.