
INTRODUCTION
The U.S. Solid digital rotational viscometer includes a small-sample adapter and No. 21, 27, 28, and 29 spindles for selecting sample volume and viscosity range by method. Its metal outer housing helps protect internal components during routine laboratory, formulation, and production testing. The included R2 to R7 spindles provide the standard range of 40 to 40,000,000 mPa.s.
FEATURES

- MULTI-SPINDLE KIT: Includes the small-sample adapter and No. 21, 27, 28, and 29 spindles for 7.1 to 13.5 mL samples from 50 to 10,000,000 mPa.s; standard R2 to R7 spindles are also included.
- METAL INSTRUMENT HOUSING: The machine uses a sturdy metal outer housing to help protect internal components during regular setup, adjustment, and testing in laboratories and production quality-control areas.
- CONTROLLED PERFORMANCE: Provides ±1% viscosity accuracy and ±0.5% repeatability for Newtonian liquids under controlled conditions; select the spindle and speed to maintain 10 to 90 percent torque.
- TEST INFORMATION DISPLAY: The 3.0 inch TFT color screen displays viscosity, spindle, speed, torque, temperature, and test time; timer operation and a viscosity curve support repeatable test methods.
- RECORDS AND OUTPUT: Stores up to 10,240 test records for method tracking; RS232 supports connection to a compatible computer or printer, while 100 to 240 V AC input supports use in different laboratory locations.
INCLUDED MULTI-SPINDLE SMALL-SAMPLE KIT
INCLUDED ACCESSORY
This bundled model includes the small-sample adapter and No. 21, 27, 28, and 29 spindles. No. 21 covers 50 to 500,000 mPa.s with 7.1 mL; No. 27 covers 250 to 2,500,000 mPa.s with 10.4 mL; No. 28 covers 500 to 5,000,000 mPa.s with 11.0 mL; and No. 29 covers 1,000 to 10,000,000 mPa.s with 13.5 mL.
WHAT IS ADDED IN THIS BUNDLE?
This bundle expands the standard DV1 RV configuration with a flexible multi-spindle accessory for small-volume sample testing.
STANDARD DV1 RV CONFIGURATION
Includes the R2 to R7 spindle set for the standard viscosity range of 40 to 40,000,000 mPa.s.
THIS BUNDLE ADDS
A small-sample adapter with No. 21, 27, 28, and 29 spindles. Select the spindle that matches the required sample volume and viscosity range.
Added capability: choose from four included small-sample spindles for 7.1 to 13.5 mL samples and 50 to 10,000,000 mPa.s, depending on the selected spindle.
APPLICATIONS

- Laboratory method development and formulation work
- Production quality control of compatible liquid samples
- Oils, lubricants, coatings, adhesives, inks, and other compatible fluids
- Small-volume testing with a selected No. 21, 27, 28, or 29 spindle
SPECIFICATIONS
| Model | USS-DVT20011 | Brand | U.S. Solid |
|---|---|---|---|
| Standard Viscosity Range | 40 to 40,000,000 mPa.s | Standard Spindles | R2 to R7 |
| Accessory | No. 21, 27, 28, and 29 small-sample spindles with adapter | Accessory Range | 50 to 10,000,000 mPa.s, by selected spindle |
| Accessory Sample Volume | 7.1 to 13.5 mL, by selected spindle | Speed Range | 0.1 to 200 rpm |
| Viscosity Accuracy | ±1% | Repeatability | ±0.5% |
| Display | 3.0 in TFT color screen | Record Capacity | Up to 10,240 results |
| Data Interface | RS232 | Input Power | 100 to 240 V AC, 50/60 Hz |
| Recommended Temperature Measurement Range | 0 to 60°C | Temperature Accuracy | ±0.1°C |
PACKING LIST
- Viscometer head x1
- Standard spindle set, R2 to R7 x1
- Small-sample adapter and No. 21, 27, 28, and 29 spindles x1 set
- Power adapter x1
- Base x1
- Lift column assembly x1
- Hex key x1
- Open-end wrench x1
- RS232 cable x1
- User manual x1
FAQ
1. What samples can this viscometer test?
It is intended for compatible liquid samples used in laboratory method development, formulation work, and production quality control.
2. Which ranges are available with the multi-spindle small-sample kit?
No. 21 covers 50 to 500,000 mPa.s with 7.1 mL; No. 27 covers 250 to 2,500,000 mPa.s with 10.4 mL; No. 28 covers 500 to 5,000,000 mPa.s with 11.0 mL; and No. 29 covers 1,000 to 10,000,000 mPa.s with 13.5 mL.
3. How should I select a spindle and speed?
Select the spindle and speed according to the sample and measurement conditions. For meaningful comparison, use consistent spindle, speed, temperature, and test time settings and maintain torque between 10 and 90 percent.
4. How are test records stored?
The viscometer stores up to 10,240 test records. Timer operation and viscosity-curve display help support repeatable testing methods.
5. How can I connect to a computer or printer?
Use the RS232 interface with compatible computer, printer, and software connections.