CL’s 1 & 2 Ton E-Z™ Presses feature a unique laboratory press design combined with the same unibody construction and other features common to our E-Z™ Press line. We have redesigned these laboratory presses to maximize the sensitivity of the press for exact reproducibility of applied force. Normally, hydraulic lab presses use a pump to apply pressure to the piston of the hydraulic cylinder. The hydraulic fluid pump found in standard lab press designs increases the pressure of the hydraulic fluid in spurts which causes the force being applied by the press to jump in increments which are difficult to control with precision. In addition, there is some backflow of hydraulic fluid during the pumping process which amplifies the lack of reproducibility of force levels.
Many applications for low pressure laboratory presses such as intrinsic ingredients dissolution analysis require the application of highly reproducible force levels, and 12 ton hydraulic presses are inherently unsuited to these applications. By removing the pump and sealing the hydraulic cylinder, we have created a press which enables application of very small increments of force levels which can be reproduced with a high degree of precision from sample to sample and without pressure drops. The force is applied to the sealed cylinder by turning the lead screw assembly against the platen on which the die is seated, similar to the manner that a wine press operates.
Since the force levels are very low, very little effort is required to turn the lead screw. These lab presses are equipped with clamps which allow them to be anchored to any bench top and easily moved to different locations within the lab and they can also be bolted to a lab bench using the fixtures provided with the press. When used with ICL’s intrinsic dissolution analysis dies or ICL’s Macro-Micro dies, the dies are automatically centered in the press. Note that special short profile Macro-Micro dies are required for this press. The 1 and 2 Ton E-Z™ Press can also be used with ICL’s 2mm, 4mm and 7mm die sets and die centering inserts are available for the smaller die sets. Also available in high profile version for applications such as Wood apparatus intrinsic dissolution testing.
The 2 ton high profile E-Z Press™ incorporates the same wine press design as our standard 1 and 2 ton laboratory presses (0012-7417 & 0012-7760), but it also has a larger 5 ¼” daylight opening and a larger sample compartment to enable use of the press with Wood apparatus intrinsic dissolution dies and other applications requiring a larger daylight opening. This lab press has a 4 ½”diameter stainless steel platen. A centering fixture is available to properly hold and center the 4”X 4” square base of any standard Wood apparatus intrinsic dissolution die set on the platen of the press. The High Profile 2 ton E-Z Press™ lab press can be converted to a 20 ton press with a modular insert.
ICL’s new patented E-Z Press™ hydraulic lab presses feature a unique lightweight ergonomic design. All E-Z Press™ laboratory press models weigh less than 90 pounds due to ICL’s patented unibody construction. The 12 ton E-Z Press™ laboratory press weighs a mere 51 pounds! The 15 and 20 ton E-Z Press™ will handle a variety of lab applications, including pressing KBr pellets for FTIR spectroscopy and briquetting samples for XRF spectroscopy.
Ports in the walls of the lab press frame allow access for vacuum lines and electrical cords to the area between the platens, which enables use of the press with evacuable dies and heated platens. The 15 and 20 ton E-Z Press™ can also be used for making thin films with ICL’s Precision Thickness Film Maker and Heated Platens. Automated versions or our laboratory presses are available (see Air-EZ™) which are driven by pneumatic motors powered by your lab’s compressed air supply.
The newest additions to the E-Z Press™ laboratory press line are ICL’s new 1 and 2 ton E-Z Presses™. The 1 and 2 ton units offer sensitivity at low pressure levels in applications where precise control of the load on the sample is required, such as pressing pellets of intrinsic pharmaceutical ingredients for dissolution rate analysis.
All E-Z Presses™ lab presses feature built in polycarbonate safety shields with solid brass hardware. There are die centering depressions in the round bottom platens. Each press comes with a standard stainless steel filling disc to flatten the platen. The bottom platen of the 2 and 12 ton E-Z Press™ automatically centers ICL’s 13mm Macro-Micro die. The bottom platen of the 15 and 20 ton E-Z Press™ has a 4″ diameter depression and optional donut shaped inserts are available to automatically center ICL’s 13mm, 20mm, 32mm, 35mm and 40mm die sets. Optional extra long handles are also available for all presses for extra leverage.
- Built in Polycarbonate Safety Shields
- Adjustable Overhead Lead Screw
- Access Ports for Vacuum and Electrical Lines
- Unibody Construction
- Ergonomic Design
- Automatic Die Centering
The Digital Load Cell E-Z Press™ provides real time calibrated force readings displayed in a large, bright digital readout. These laboratory presses are available in 1000 and 5000 pound versions. They are useful for low force applications where a reliable calibrated force measurement is desirable, such as intrinsic dissolution testing. Force is measured in most hydraulic lab presses by interpolation.
The pressure of the hydraulic fluid in a standard lab press is piped to a gauge and the gauge is marked to correspond to the rated force of the hydraulic cylinder at a known hydraulic fluid pressure. This method of measurement, while reasonably accurate, is neither calibrated nor is it a direct measurement of force. Furthermore, standard presses cause the force to increase in spurts as a pump forces hydraulic fluid against the piston of a hydraulic cylinder.
The Digital Load Cell E-Z press functions like a wine press. The load is applied by turning the lead screw on top of the press against a sample which is mounted directly on top of a calibrated load cell with a digital readout. Force application by this method is more linear and allows for finer gradations in force selection. The load cell is built into the press and is located beneath the 4.5” diameter stainless steel platen on which the sample is mounted. The load cell is factory calibrated using NIST traceable instruments and standards to an accuracy of +/- 0.5% for linearity, repeatability and hysteresis combined.
The digital load cell press can be used with either of ICL’s intrinsic dissolution apparatus models (0012-7825 or 0012-8404), as well as with ICL’s heated platens (0012-6664). The load cell is highly sensitive, so expansion or contraction of the press frame will be detected by the load cell when a sample is clamped within the press. An optional cooling coil (0012-8403) is available for use with heated platens which will limit the expansion and contraction of the press body caused by temperature changes.