Water is the most popular solvent – but also there is a possibility of your sample containing organic solvents or acids which requires the -86℃ condenser to trap them.
In this case, -58℃ condenser is not enough to effectively trap organic or acids vapor. Organic or acids vapor condenses when touching a cold surface, which cause vacuum hose, sealing and valves eroded. In order to prolong the life time of your freeze dryer, you should make correct choice by adding your Freeze Dryer an A-assembly and choose a freeze dryer with a -86℃ condenser.
A-assembly includes the following components and features specially designed for handling organic solvents or acids sample:
-86℃ Cold Trap is made of AISI316 stainless steel, which is able to endure organic solvents and acids.
Updated corrosion-resistant vacuum hose, valves so as to keep a perfect sealing effect.
Adding acid and alkali resistant filter at the inlet of vacuum system.
**We strongly recommend a non-corrosive pump or chemistry-Hybrid pump (optional) in case of your sample containing larger amounts of organic solvents or acids.
SYSTEM FEATURES AND BENEFITS
Automatic Programmable Control System
User-friendly programmable control system enables you to preprogram a drying protocol including all segments from drying to defrosting (only for Pilot Freeze Dryer), to start a run quickly, and to realize automatic control of different ramping and segments in order to meet different temperature protocols.
Shelf Heating System
Temperature controlled by forceful circulation of cooling medium inside shelves ensures better temperature uniformity and faster drying speed.
You can pre-freeze your sample in the chamber which avoids cumbersome sample transfer from separate freezer to freeze dryer, more economic and time-saving (for Pilot Freeze Dryer).
Automatic defrosting system for fast defrosting of cold trap makes higher drying efficiency possible.
Automatic Pure Nitrogen Gas Purge System (for biological samples)
Automatic purge system protects samples from contamination of the counter-flow of vacuum pump oil and oxidation of oxygen-sensitive samples by inserting sterilized nitrogen gas once vacuum pump quits working.
Safe Stoppering Device
For the purpose of permanent preservation, sample in vials can be sealed under a vacuum state by integrated capping device, which consists an option guides shelves down, and a rotating sealing device to seal the sample safely and precisely.
High performance Vacuum Pump with vacuum backfilling function
Vacuum backfilling function is a protective interlock system between vacuum pump and automatic purge system. Once vacuum pump quits working, automatic purge system is triggered to prevent vacuum oil counter-flow into vacuum tubing system. High performance vacuum pump speeds up the removal of moisture and enhances the cooling capacity of freeze dryer.
High Capacity Compressor with Start-up Delay Function
High capacity refrigeration compressor maximizes the condensing capability of cold trap. Start-up delay function minimizes damage to compressor and prolongs its working life.
1.5 Km Remote Control
Easy to monitor drying parameters and control freeze dryer from an external
PC in a different room.
Comprehensive accessories accommodating most application demands.
Our comprehensive accessories also contribute to our customer-friendliness. They especially make our instruments very adaptable and their operation economical.
FEATURES OF MAIN COMPONENTS
Two drying modes available: automatic and manual.
Program controlled backfilling system.
Program controlled defrosting system.
* Start-up delay function minimizes damage to compressor and prolongs its working life.
* Protective interlock system between vacuum pump and automatic purge system. Once vacuum pump quits working, automatic purge system is triggered to prevent vacuum oil backfilling into vacuum tubing system.
Build-in computer and large LCD touch screen. Mass memory for safe storage of 5000 programmed or user-defined protocols.
Monitoring system real-time displays processing parameters such as vacuum pressure, cold trap temperature and sample temperature (only for freeze dryer with P controller).
Data Recording system saves data at an interval of one minute. Mass memory can keep a continuous data logging for 730 days and stores up to 5,260,000 memories (optional).
1.5km remote control system, easy to monitor and control all processing parameters. USB port is available, easy to transfer data to an external PC (optional).
Temperature and Vacuum Calibration.
Alarm Output Function.
Automatic nitrogen gas purge system to protect samples from contamination of counter-flow of vacuum pump oil and oxidation of oxygen-sensitive samples by inserting sterilized nitrogen gas once vacuum pump quits working (Optional)