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    Digital Rotational Viscometer, 1-6000000 mPa.s

    5 out of 5 based on 4 reviews | Write a review
    Featuring high accuracy and good repeatability, the digital rotational viscometer comes with 4 spindles (1#, 2#, 3#, 4#) and 9 different rotating speeds (0.1/0.3/0.6/1.5/3/6/12/30/60 rpm). Offering the viscosity measurement up to 6,000,000 mPa.s, accuracy ±2% and repeatability ±0.5%. Wide input voltage of 110-230V 50Hz/60Hz for continuous operation, easy-to-read LCD display with high resolution 0.01mPa.s, ideal for industrial and research applications.
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    Delivery date: 6-12 days

    The rotational viscometer has 9 selectable rotational speeds and a set of standard spindles 1#, 2#, 3#, 4# to provide a wide range of viscosity measurement from 10 to 6,000,000 mPa.s, with high accuracy, reliability and favorable price.


    • The digital rotational viscometer can measure the viscosity of a Newtonian liquid or the apparent viscosity of a non-Newtonian liquid.
    • LCD display shows the measurement data directly, easy to read.
    • Adopt the advanced micro-computer drive technology and stepper motor, accurate and stable rotating speed.
    • The horizontal display unit is at the front of the viscometer, convenient to adjust.
    • The measuring range and viscosity value can be accurately display with resolution of 0.01mPa.s.
    • With timing measurement function, it is practical for measuring the non-Newtonian liquid.
    • With automatic scanning, the viscometer can automatically recommend a preferred combination of rotor and speed.
    • The viscosity measurement range of the selected rotor and rotating speed is automatically displayed.
    • With the printing interface, a micro-printer can be connected to print various data.


    Model ATO-SNB-2
    Measuring Range 1*~6000,000 mPa.s
    Rotating Speed (r/min) 0.1, 0.3, 0.6, 1.5, 3, 6, 12, 30, 60
    Resolution 0.01 mPa.s
    Rotor 1#, 2#, 3#, 4# (Standard, for measuring viscosity more than 10 mPa.s)
    0# (Optional, for measuring the ultra-low viscosity less than 10 mPa.s)
    Sample Consumption 250mL-400mL
    Measuring Accuracy ±2% (full range)
    Repeatability ±0.5%
    Display LCD display
    Timing Measurement Function Yes
    Auto Scanning Function Automatically recommending the optimal combination of the rotor and rotating speed according to the sample viscosity.
    Measuring Range Display Function Automatically displaying the maximum viscosity value measurable for the selected rotor and speed combination.
    Data Output Interface Yes
    Power Supply 100-240V, 50/60Hz
    Net Weight 7kg
    Size 300*300*450mm
    Standard Packing List Viscometer main machine
    Rotor 1#, 2#, 3#, 4#
    Rotor protective frame
    Triangular base and column
    Aluminum alloy carrying case
    Power adapter
    Optional Accessories Rotor 0#, Temperature probe, Software, Mini printer


    * The rotor 0# is required when the measuring viscosity is lower than 10 mPa.s.


    The digital rotary viscometer is widely applied in the fluid & semi-fluid manufacturing, scientific research institutes, universities or laboratories for viscosity measurement of oils, greases, paints, coatings, pulp, textiles, food, pharmaceuticals, adhesives and cosmetics, etc.

    Rotational Viscometer Applications

    Tips: How to Use the Rotational Viscometer?

    1. The rotational viscometer must be kept in a horizontal state.

    2. When the rotor is put into the sample, bubbles should be avoided, otherwise the measured viscosity value will be reduced. The way to avoid this is to put the rotor tilting into the sample, and then install the rotor which cannot touch the wall and bottom of cup. The sample to be measured cannot pass the specified scale.

    3. When the rotational viscometer is used for measuring different samples, the rotor must be kept clean and dry. If there are other samples on the rotor or remaining water after cleaning, the accuracy of measurement will be affected.

    4. The maximum acidity (PH) should not exceed 2. If the acidity is too high, a special rotor should be selected. If used for ultra-low viscosity, it needs determine the sample volume.

    5. The viscosity standard liquid should be chosen according to scope of the measuring viscosity. To ensure the accuracy of the measurement, verify the viscometer or rheometer each time you use this instrument, or check on a regular basis.

    6. When connecting the rotor, gently lift and hold the mandrel with the left hand (on the viscometer main machine) and rotate the rotor with the right hand. This operation is to protect the mandrel and gossamer in the viscometer, so as to extend the service life of the instrument.

    7. Get the readout when the value is relatively stable, otherwise there will be a large error in the obtained value.

    8. When choosing the rotor, it should check which rotor has a closest measuring range with the sample to be measured, and then choose that one.

    Existing reviews of Digital Rotational Viscometer, 1-6000000 mPa.s
    Buying a viscometer responds well
    We have purchased this item and ATO is very quick to answer any questions or issues. The quality of the viscometer itself is good compared to the price and the operation is simple.
    From: Rolando | Date: 24/10/2022
    Was this review helpful? Yes No (0/0)
    A well-made viscometer
    The packaging is very good, no damage after receiving, the viscometer with aluminum case is very convenient to carry, the supporting gadgets are very complete, I am very satisfied with the product and service.
    From: Finn | Date: 02/06/2022
    Was this review helpful? Yes No (0/0)
    The viscometer is very good to use
    Measurement of viscometer sensitivity is very high, stability is very strong, easy to use, recommended, I have been using the pointer model, this digital display type of viscometer is very good to use.
    From: jesper | Date: 02/06/2022
    Was this review helpful? Yes No (0/0)
    My requirement for digital rotational viscometer
    I am looking at purchasing one of your viscometers. I work in a university lab and my team was wondering if you offer any sort of academic pricing or academic discount on your products?
    I have questions regarding the digital rotational viscometer, 1-2000000 mPa.s. I am trying to decide what motor I would need. Our viscosity range Is 0.1-10 cP.
    I would also like to know what sample consumption means. From my understanding, its how much of the sample is required for the viscometer to work. I'm concerned about the volumes that you have listed. In our lab, we are working with small quantities and I wonder if the sample consumption is the number that is required.
    From: Sanchez | Date: 02/07/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    For your inquiries in the other email, here are the answers:
    1. The minimum measurement accuracy is only 1 cp of the unit, so it can only measure ranges of 1-10 cp, and we recommend to use 0# rotor.
    2. For sample consumption, it means the minimum amount of sample that can be consumed to meet the normal operation of the device. And the minimum volume for 0# rotor is 21mL at least.
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