NDJ-4 Analog Rotational Viscometer, 1-2 × 10^6 mPa·s (CAT#: STEM-BC-4019-ZJF)

The NDJ-4 is an analog rotational viscometer designed for measuring liquid viscosity and viscous resistance. It is applicable to oils, coatings, plastics, food products, medicines, adhesives, and related fluids. The wider measuring range supports testing of low- to high-viscosity materials. A pointer-type display provides straightforward reading of measurement results. The lifting mechanism uses a helical rack and gear to support controlled movement of the measuring head. A universal joint at the rotor interface improves rotor positioning and connection stability. High-performance engineering-plastic gears provide wear resistance during speed adjustment. The supplied rotors are precision-machined from imported 304 stainless steel. Eight selectable rotor speeds provide flexible testing across different sample viscosities.

Power supply: AC 220 V ±10 V, 50 Hz ±10%
Rated power: 0.2 W
Display: Analog pointer
Viscosity range: 1-2 × 10^6 mPa·s
Standard rotors: No. 1, 2, 3, and 4
Optional rotor: No. 0 for 0.1-10 mPa·s
Rotor speeds: 0.3, 0.6, 1.5, 3, 6, 12, 30, and 60 rpm
Measurement accuracy: ±5% for Newtonian fluids
Repeatability error: ±2% for Newtonian fluids
Rotor material: 304 stainless steel
Net weight: 3.5 kg
Product dimensions: 270 × 230 × 490 mm

Extended 2 × 10^6 mPa·s range
Eight selectable rotor speeds
Analog pointer indication
Smooth vertical adjustment
Durable wear-resistant gears
Universal-joint rotor connection
Precision 304 stainless-steel rotors
Suitable for process quality control

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