The Solid Phase Monitor (SPM20) solubility system is an important tool for observing phase behavior and solubility of materials under high pressure conditions.

The equipment features a variable volume viewcell body with a piston. The system is rated up to 689* bar (10,000 psi) and 1500 C. The high-pressure motor driven stirrer allows the user to achieve high stirring rates in the viewcell. The viewcell body also incorporates a pressure transducer, thermocouple, rupture disc assembly and process ports. The CCD camera and illumination source with two sapphire windows mounted 900 apart in the body provide the capability to view inside the viewcell. The viewcell body is uniformly heated using embedded heaters for temperature control.

System package includes:

• Phase monitor with pressure and temperature sensors, swivel stand, CCD camera, light source, rupture disc assembly (400 bar, 6,000 psi), temperature display & control, digital pressure display, inlet and outlet 1/16” valves and TV/VCR combo.
• Video overlay kit (VOK) allows the user to process pressure and temperature conditions using a processing module and overlay on video image for display and recording on TV/VCR combo.
• Stirrer kit includes high-pressure motor driven stirrer with impeller and speed controller.

We do not supply TV/VCR combo for PAL or 220V systems.

Applications include:

• Observing liquid-liquid, liquid-gas miscibility under pressure and temperature
• Solubility conditions for compound of interest with solvents or carbon dioxide or mixtures for Supercritical Fluid Extraction (SFE) or Pressurized Solvent Extractions
• Swelling of polymers with gases
• Solubility of natural product mixtures in carbon dioxide and solvents.
• Dissolution, precipitation, and cloud points
• Solvents and CO₂ phase behavior 
• Extraction optimization
• Chromatography optimization
• Solubility studies for particle design
• Reaction conditions

A simple lever operated mechanism allows the user to increase pressure in the viewcell and precise valve to decrease pressure. A unique stand assembly allows viewcell rotation up to 1800 that allows inversion and viewing of different phases if present. The mounting mechanism also facilitates easy cleaning with minimal disconnection of fittings or removal from stand. For additional pressure control capability, a syringe pump can be coupled with the system to achieve wide range of pressures without using viewcell piston for ressurization.

Other features include:

• 20 mL viewcell, 5 mL dead volume
• High resolution piston displacement
• 316 SS construction for wide compatibility
• Cell rotation capability from 0 - 1800
• Motor driven high pressure stirring
• Built-in pressure and temperature sensors
• Uniform heating
• CCD camera and light source for viewing
• Video output for recording
• Display of pressure and temperature
• Video overlay of process conditions
• User-friendly design

The system includes phase monitor with pressure and temperature sensors, swivel stand, CCD camera, light source, rupture disc assembly (400 bar, 6,000 psi), temperature display & control, digital pressure display, inlet and outlet 1/16” valves and TV/VCR combo.

Phase Monitor 110V NTSC camera system

Phase Monitor 110V PAL camera system

Phase Monitor 220V NTSC camera system

Phase Monitor 220V PAL camera system