Polymer viscometers for advanced characterisation
Our polymer viscometer series is designed specifically for polymer process plant laboratores, compounders, and quality labs. Intrinsic viscosity determination in dilute solutions (ASTM D4603/ISO 1628) provided with automation.
Optimise polymer quality whether you are certifying product, checking incoming raw or safeguarding your proces.
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RPV Polymer Viscometers
High-performance polymer viscometers for intrinsic viscosity testing
Consistent. Compliant. Effortless.
PSL Rheotek polymer viscometers are purpose-built for measuring intrinsic viscosity (IV) in dilute polymer solutions—especially in PET, rPET, PBT, and polyamide testing workflows. Designed to simplify compliance with ASTM D4603 and ISO 1628, our systems reduce operator workload while delivering traceable, reproducible results.
Built for polymer quality control
● Compliant with global standards All viscometers meet ISO 1628 Parts 1–5 and ASTM D4603 for intrinsic viscosity testing in polymers.
● Fast, repeatable testing
Automated or semi-automated options allow reliable testing of PET pellets, fibers, and plastic resins using industry-approved solvents such as phenol/1,2-dichlorobenzene.
● Precision flow timing
Integrated timers or optical flow sensors eliminate human error and variability in drain time measurement—critical for accurate molecular weight determination.
● Fully calibrated with ISO 17025 certificates
Every instrument is factory-calibrated with traceability to primary viscosity standards, supporting
What’s the difference between intrinsic and kinematic viscosity tests?
Intrinsic viscosity relates to polymer molecular weight in dilute solution (ASTM D4603/ISO 1628), while kinematic viscosity measures fluid flow time—ideal for oils, monomers, or heavy polymers.
What solvents and temperatures are supported?
Our polymer viscometer is compatible with common solvents, e. g. Phenol TCE, Chlorform, THF, Metylene Chloride, Acetone, Formic Acid and many more. Corrosive solvents, e. g. sulphuric acid and DCA accommodated in units with anti-corrosive coating. Temperatures from 25 degrees C and up to 135 degrees C.
Is data logging supported?
All polymer viscometers include secure software with timestamps, sample IDs, individual run data, and export to CSV, PDFs, or LIMS.
Can we validate against published methods?
Yes—our systems comply with the test protocols of ASTM D4603, ISO 1628 (parts 1–5), and IP. Certificates and method compliance documentation included.
How long does it take to measure a sample?
Approximately 15 minutes after loading the sample, the IV result is available.