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VROC®️ initium one plus

Automated Viscometer

Automate your lab with our flagship high throughput viscometer. Measure a 96 well plate of samples with just one touch.

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Retest and retrieve your samples 
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Small Samples
Samples as small as 19 μL
Temperature Control
Conduct temperature sweeps in a controlled environment
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High Throughput
Automatically screen up to 96 samples in 24 hours

Working with smaller volumes?

Check out the m-VROC II for the smallest samples in the industry.

Test with as little as 10 μL of your sample!


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VROC initium one plus is the leading automatic viscometer that measures true viscosity with the highest accuracy and repeatability. Its superior resolution is revolutionizing characterization of Newtonian and non-Newtonian samples

This product can be configured based on your applications and there are multiple chip options you can choose from. Here is the chip selection guide!

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VROC®️ Technology


Understanding Fluid Behavior — Measuring Absolute Viscosity

With VROC® Technology, RheoSense took the standard principles of rheometry and created a dynamic micro-sample viscometer by adding microfluidics while reducing the size of the device with MEMS (micro-electrical mechanical systems) manufacturing. The result was a new platform which offers capabilities that are well beyond the limits of conventional viscometers in not only the sample volumes required, but the measurement range and precision.

VROC Chip & Board
Health care researchers working in lab
"We got excellent data quality and highly repeatable results, thank you so much for your guidance with the method edits!"
Justin HopkinsKBI-Biopharma
  • Sample volume as low as 19 μL
  • Repeatability: 0.5% of reading
  • Shear Rate Range 40 – 140,000 1/s
  • Temperature Range 4 - 70°C
  • Viscosity Ranges: 0.3 – 1,000 mPa-s (with autosampler)
    0.3 - 3,000 mPa-s (with manual syringe)
  • Power: AC 115V/230V~, 50/60Hz, 150W (max)
  • Width: 715 mm
  • Length: 373mm
  • Height: 724 mm
  • Weight: 22 kg
  • CE and UL Certified


Our instruments are fully supported based on service plans. Select the best option for you below.


Our basic support package covers a single chip repair or calibration, an onsite inspection of your instrument, onsite and remote training sessions, and up to $10,000 credit towards repairs to your instrument.


Our mid-tier support package covers two chip repairs or calibrations, an onsite inspection of your instrument, two onsite and remote training sessions, and unlimited mail in repairs to your instrument.

This package also includes 20 hours of dedicated protocol development to help your team get the most out of your instrument every year.