Two positions Auto PET polymer system PSL-Rheotek

Two positions Auto PET polymer system PSL-Rheotek

RPV-1 (2) AutoPET with heating/stirring in Auto Sampler

RPV-1 (2) AutoPET Request Quotation

For minimal operator contact with solvents, the PSL Rheotek RPV-1  (2) AutoPET two position AutoPET is your first choice. The viscometer system is configured specifically for fully automating the Intrinsic Viscosity of polyethylene terephtalate (PET) in accordance with ASTM D4603 and/or ISO 1628 Part 5. The AutoPet is the most advanced fully automated viscometer available for polyester.

Auto systems fully integrate sample preparation, sample dissolution & sample loading, as well as flow time measurement, cleaning and reporting of results. One or two heating and stirring zones can be configured to control the dissolution of batches of samples. Both heating temperatures and stirring times are computer controlled and samples are cooled prior to being automatically loaded into the viscometer. Typical sample throughput is 6 to 8 samples per hour with two measuring positions.

Part No. RPV-1 (2) AutoPET

Product Description


The PSL Rheotek RPV-1 (2) AutoPET provides a reliable and precise system for measuring dilute solutions of polymers.
Auto systems not only combine the control of the sample preparation process but also the sample dissolution.
The RPV Auto system controls the heating and stirring times of polymer solutions, as well as cooling prior to
Sample dissolution control is critical in order to ensure that polymer solutions, such as PET, do not degrade prior
to measuring their intrinsic viscosity.
The RPV-1 Auto automates the manual steps set out in standard methods, minimizing the variability of results.

Flow times are measured automatically using ASTM Ubbelohde viscometer tubes supplied with ISO 17025
certificates of calibration.
Cleaning is carried out in-situ utilizing solvents and a safe vacuum system.
The comprehensive RPV-1 Auto software program records all measurement data as well as calculating a wide
range of results.


Standard Practice:
ASTM D2857 Determination of the dilute solution viscosity of polymers.
Test Methods General:
ISO 1628 Part 1 Determination of the reduced viscosity, intrinsic viscosity and K-value of polymers in dilute solution using glass capillary viscometers
Test Methods Poly (Ethylene Terephthalate) PET:
ASTM D4603 Determination of the Inherent Viscosity of Poly (Ethylene Terephthalate) PET
ISO 1628 Part 5 Determination of the viscosity number (reduced viscosity) of  Poly (Ethylene Terephthalate) PET, poly (butylene terephthalate) PBT, poly (cyclohexylenedimethylene terephthalate) PCT and poly (ethylene naphthalate) PEN.
Other Test Methods:
ASTM D445 Standard Test Method for determination of kinematic viscosity
ISO 3104 Petroleum products – determination of kinematic viscosity
IP 71 Section 1 Kinematic Viscosity


Typical RPV Applications And Configurations  
Polymer Test Method Solvent Concentration Temperature RPV Measuring Positions
PET ASTM D4603 Phenol/Tetrachloroethane 0.5% 30°C 1 to 4
PET ISO 1628-5
DIN 53728
Phenol/Dichlorobenzene 0.5% 25°C 1 to 4
PET ISO 1628-5 Dichloroacetic acid 0.5% 25°C 1 to 4

Tube Type: AKV Ubbelohde, RPVm Ubbelohde

Part No. Ordering Information
RPV-1 (2) AutoPET PSL Rheotek AutoPET Polymer Viscometer – two positions complete with integrated sample preparation, sample heating and stirring block and Smart Sampler.
RPV-1 (2) AutoPET/D PSL Rheotek AutoPET Polymer Viscometer – two positions complete with integrated sample preparation, dual zones sample heating and stirring blocks with shared cooling system and Smart Sampler.


Part No. Options
RPVS010 RPV start up kit including glass vials (144 pcs) and plastic caps (500 pcs)
SIL-OIL Silicone bath oil
MIN-OIL Mineral bath oil
ACC-1 Anti-corrosive coating – required for sulfuric acid and DCA applications
TSC-1 Third cleaning option – required for sulfuric acid or custom applications.
SWC/U Split waste upgrade option
STATPACK RPV StatsPack extraction of results to PC or LIMS