With a USB port for easy data export, sample identification for traceability, and self-diagnostics for quality assurance, Hach ® makes it easy to Be Right. What's included TL2310 Turbidimeter, silicone oil, oiling cloth, 1-inch sample cells (30 mL) with caps (6x), Gelex secondary turbidity standardization kit, Stablcal calibration kit, power supply, power cord, dust cover