Hach Portable Turbidimeters are supplied with four AA alkaline batteries, one carrying case with insert, StablCal primary standards in 1-inch (20, 100, 800 NTU) sealed vials, a 10 NTU primary check standard, 6 Measuring vessels with screw caps, instrument manual (paper version and CD-ROM), quick start guide, silicone oil and a lubricating cloth.