RPV-3 Polymer Viscometer

RPV-3 Polymer Viscometer

PA, PET, PVC, PAN, PLA, PB, PC, PE, PP, pulp, cellulose, MCC, electrical papers

The Rheotek Polymer Viscometer RPV-3 provides a reliable and precise method for measuring the dilute solution of polymers.

In this very operator-sensitive test, automation using the RPV-3
minimizes the variability of results.

Reported results include:
Relative Viscosity
Specific Viscosity
Reduced Viscosity
Viscometer Number
Inherent Viscosity
Intrinsic Viscosity

Methods: ASTM D789, D871, D1243, D1795, D2857, D4603, ISO307, ISO 1628. ISO 5351, Tappi T230, IEC 60450, USP 911


The RPV-3 consists of two main modules, a Constant Temperature Bath and a Viscometer Control Module.

  • The EVS TCB Viscometer Bath provides a very stable temperature critical for viscosity testing.
  • The AC-DC switching power supply provides continuous temperature control.
  • A built-in solid-state re-circulating chiller provides ambient cooling at set points 20, 25, 30, and 40°C.
  • The bath is designed with a flat top lid to accommodate a Viscometer Control Module.


The RPV Viscometer Measurement and Cleaning Module include pneumatic valves as well as embedded electronics and firmware.

A control module can be configured with one or two measuring positions, each position with two or three cleaning solvents.

Test methods
ASTM D789, D871, D1243, D1795, D2857, D4603, ISO307, ISO 1628. ISO 5351, Tappi T230, IEC 60450, USP 911

Diluting polymers in acids, organic solvents, and water. Diluting pulp, cellulose, and MCC in Cuene

Range of results
Flow times, kinematic viscosity, relative viscosity, specific viscosity, reduced viscosity, Viscometer Number, inherent viscosity, intrinsic viscosity, K value, degree of polymerization & custom results

Bath filling volume
10L (1 to 3 positions) or 20L (1 to 5 positions) (depending upon model)

Coolant filling volume

Temperature set-points
20, 25, 30, 40°C and custom

Number of Viscometer Positions
1 or 4 (depending upon system configuration)

Heating power

Cooling power

Power requirements
100 to 240V AC

(combined bath and control module)
400mm (wide) x 536mm (deep) x 700 mm (high)
16” (wide) x 22” (deep) x 30” (high)

2 or 3 cleaning solvents
Reaction block for sample dissolution