Metrohm^® 763 PVC Thermomat

Automatic determination of the thermal stability of PVC plastics

The 763 PVC Thermomat, a fully PC-controlled instrument for the determination of the thermal stability of PVC plastics, features data storage and archiving into a database as well as automatic evaluation of the curves.

Two heating blocks allow you to analyze eight samples at one or two different temperatures. Increase your analysis capacity to 32 samples at up to eight different temperatures by connecting up to four PVC Thermomats to a PC. The Windows®-based software makes operating the Thermomat quick and easy. Enjoy total flexibility with control and management of each individual sample and heating block.

With the 763 PVC Thermomat, the determination of the thermal stability of PVC-type polymers takes place at a highly sophisticated level! With the disposable sample reaction vessels, the cleaning procedure is reduced to a minimum. Determination of the thermal stability of PVC-chlorinated plastics is a three-step process:

• PVC decomposes at elevated temperatures and releases gaseous HCl
• The gaseous HCl is then moved by a stream of inert nitrogen into the measuring cell filled with distilled water
• The thermal stability of the PVC materials is determined by measuring the conductivity of the aqueous HCI solution

Applications:

• Quality control in PVC industry
  • Determination of PVC stability times of PVC resin, blended PVC and PVC products
  • Examination of PVC additives (stabilizers, plasticizers)

Features:

• Two heating blocks per Thermomat allows eight sample measurements at two different temperatures
• Connect up to four Thermomats per PC—increase analysis to up to 32 samples at up to 8 different temperatures
• Fully PC-controlled
• Wide temperature range (50°C to 220°C)
• Individual start of each channel
• Disposable reaction vessels
• Database archive with sorting, filtering and data export
• Automatic evaluation with additional, computer-supported manual evaluation using the tangent method
• Temperature extrapolation: conversion of the results to other temperatures, e.g., storage temperature
• Integrated validation features

The 763 PVC Thermomat meets the following standards:

• Certified GLP set for exact calibration of the instrument: National and international standards
• DIN 53381 part 1: Determination of the thermostability of PVC
• DIN VDE 0472 part 614: Examination of insulated cables—thermostability
• ISO 182-3: Plastics—Determination of the tendency of PVC-based polymers to evolve
• HCl at elevated temperatures—part 3: conductometric method

The measuring block of the 763 PVC Thermomat consists of two heating blocks each with four sample positions

For more information, contact your local Brinkmann Sales Representative.