Wide Compatibility --- Specifically designed to fit NDJ-series viscometers including NDJ-5S, NDJ-8S, and NDJ-9S, serving as perfect replacement or spare rotors for your viscosity measurement equipment.
All-in-One Kit with Protective Storage Box --- Includes 4 essential rotors (1#, 2#, 3#, 4#) plus a dedicated storage box—features foam-lined compartments to prevent scratches, corrosion, or damage during storage/transport.
Precision & Durability --- High-precision machining ensures consistent ±2% measurement accuracy; made of corrosion-resistant, wear-resistant materials, with clear 1#-4# markings on the shank for quick identification.
Easy Installation & Use --- Tool-free setup—simply tighten clockwise (from above) for installation and rotate counterclockwise for removal. No extra tools needed, plus smooth rotation without wobbling when properly attached.
Versatile Application --- Covers a broad viscosity range when paired with different speeds of compatible viscometers, ideal for measuring absolute viscosity of Newtonian fluids and apparent viscosity of non-Newtonian fluids like oils, paints, plastics, medicines, and detergents.