cryogenics including cryogenic cooling,liquid nitrogen storage,storage of biological samples,cold traps,cryostats and nlk apparatus

Cryostats


LN2 bath cryostats (Dewar flasks) are made from DURAN borosilicate glass 3.3 in compliance with DIN/ISO 3585 and have been designed for use with liquid nitrogen. They are used either as a single cryostat or as an LN2 cooling shield for liquid-helium cryostats. Cryostats are made to order. Changes as to the dimensions, connections or volumes can usually be made at no extra charge. The standard LN2 cryostats come with opposing viewing strips. The cryostats can also be delivered with one viewing strip or fully silvered. Standard cryostats are available in pure glass. For a small additional charge, they can be equipped with a bottom cap or with a aluminum protective cover and viewing strip

LHe bath cryostats (Dewar flasks) are made from DURAN borosilicate glass 3.3 in compliance with DIN/ISO 3585 and have been designed for the use of liquid helium. Glass cryostats must be designed so that they can be re-evacuated, as DURAN borosilicate glass 3.3 is not helium tight. The standard vacuum connection used is an NW25 glass flange with clamp and O-ring, The helium cryostats are made to order. Changes as to the dimensions, connections or volumes can usually be made at no extra charge.

cryostatLN2 bath cryostats (Dewar flasks) are made from DURAN borosilicate glass 3.3 in compliance with DIN/ISO 3585 and have been designed for the use of liquid nitrogen. They are used either as a single cryostat or as an LN2 cooling shield for liquid-helium cryostats.
Cryostats with Schott Flange . The top flange of the cryostats is a Schott flange with an O-ring groove. The standard LN2 cryostats come with opposing viewing strips. The cryostats can also be delivered with one viewing strip or fully silvered
Cryostats with a reduced Diameter LN2 bath cryostats (Dewar flasks) are made from DURAN borosilicate glass 3.3 in compliance with DIN/ISO 3585 and have been designed for the use of liquid nitrogen. They are used either as a single cryostat or as an LN2 cooling shield for liquid-helium cryostats

 

 


liquid helium cryostat LHe bath cryostats (Dewar flasks) are made from DURAN borosilicate glass 3.3 in compliance with DIN/ISO 3585 and have been designed for the use of liquid helium. Glass cryostats must be designed so that they can be re-evacuated, as DURAN borosilicate glass 3.3 is not helium-tight. The standard vacuum connection used is an NW25 glass flange with clamp and O-ring, which makes it possible to establish the connection to the vacuum pump using small flange components made from metal.

 


cryostat for lheCryostat for LHe with Schott flange

LHe Cryostats with reduced diameter are similar to the LN2 versions with a reduced diameter and with a vacuum port for re-evacuation of the insulating space

Cryostats for LHe with reduced diameter and Schott flange

 

 

cryostat with ln2 cooling Cryostats for LHe with LN2 Cooling LHe bath cryostats Type KGZ are made from DURAN borosilicate glass 3.3 in compliance with DIN/ISO 3585 and have been designed for the use of liquid helium. The cryostats have an LN2 cooling shield to reduce the heat load on the liquid helium. Glass cryostats must be designed so that they can be re evacuated in the area of the LHe tank, as DURAN borosilicate glass 3.3 is not helium-tight. . The top flange of the cryostats is a Schott flange with an O-ring groove.

Cryostat Accessories Clamps, Seals Blind Flanges and Stop Cocks




 




Cryogenic Cooling


KALTGAS is a tempering system that utilizes the very low temperature of liquid nitrogen as a cooling agent. The jet vaporizes the liquid nitrogen in a cryogenic container, producing a steady cryogenic gas flow. The LN2 vaporizer jet can be adjusted to minimize liquid nitrogen consumption and to adjust both the cooling rate and the gas flow. The cryogenic gas flow is then piped through a vacuum insulated flexible metal line to the object to be cooled.

A KALTGAS system needs only a few minutes to produce a cold gas flow with a temperature as low as -180°C (-292°F). In most cases, this KALTGAS system is only used to produce a cold gas flow. The volume of the gas flow is adjusted with the safety control unit. Since the controlled system operates without a heat exchanger, it is not possible to maintain precise temperature stability. To achieve good temperature and control stability, a post-heating module or heat exchanger is installed. This module can be connected directly to the line, or installed in a chamber adjacent to the cold gas flow. The heat exchanger is designed to heat the cold gas flow to the desired temperature. The final product, a clearly quantified gas flow exiting the heat exchanger at a defined temperature, is ready for use as a cooling agent.

With an optimized temperature controller a temperature stability of ±0.1°C can be achieved. With the standard safety control unit, a temperature stability of better than ±0.2°C can be achieved at a steady state. Apart from the high cooling speed, another advantage of KALTGAS systems is their modular design. By swapping out individual modules such as the N2 gas line, the LN2 vaporizer or the heater, it is possible to change the cooling speed, LN2 consumption as well as the application. The basic modules, including the LN2 container, the vacuum pump and the safety control unit, remain unchanged.

cryogenic cooling T-G50 Kaltgas Cryogenic System, Vacuum Pump, SL1 Control Unit Complete system with vacuum pump for cold gas tube, including single channel gas control unit SL1; no USB interface nor LN2 container.
T-G50FV Kaltgas Cryogenic System, Evacuated Tube, SL1 Control Unit Complete system cold gas tube, including single channel gas control unit SL 1 no USB interface nor LN2 container.

 

kaltgas TG-DD Kaltgas Cryogenic System with Vacuum Pump Complete system with cold gas tube, waste gas tube, single channel temperature control unit SC3 with USB interface, LN2 level Controller, working stainless steel Dewar, without LN2 container.

 

 

cryogenic cooling T-GM5 Kaltgas Cryogenic Cooling System Complete system including 5 liter LN2 container and rotating vacuum insulated glass delivery tube.

T-GM10 Kaltgas Cryogenic System, Complete system including 10 liter LN2 container and rotating vacuum insulated glass delivery tube

 

 

cooling system TG-L63-50 Kaltgas Cryogenic System, Vacuum Pump,SC3 Control Unit The TG-L63-50 KALTGAS system includes a temperature controller with current value/set point display, a safety controller, a KF-NW 50 siphon with an LN2 vaporizer (jet), a flexible, evacuateable N2 gas line with an integrated post heating module (heater), a PT100 temperature sensor and a vacuum pump with accessories.

TG-L63-100 Kaltgas Cryogenic System, Vacuum Pump,SC3 Control Unit The TG-L63-100 KALTGAS system includes a temperature controller with current value/set point display, a safety controller, a KF-NW 50 siphon with an LN2 vaporizer (jet), a flexible, evacuateable N2 gas line with an integrated post heating module (heater), a PT100 temperature sensor and a vacuum pump with accessories.

TG-LKF63-50 Kaltgas Cryogenic System, Vacuum Pump,SC3 Control Unit The TGL63-50KF KALTGAS system includes a temperature controller with current value/set point display, a safety controller, a KF-NW 50 siphon with an LN2 vaporizer (jet), a flexible, evacuateable N2 gas line with an integrated post heating module (heater), a PT100 temperature sensor and a vacuum pump with accessories TGLKF63-100 Kaltgas Cryogenic System, Vacuum Pump,SC3 Control Unit

TG-L63-100KF KALTGAS system includes a temperature controller with current value/set point display, a safety controller, a KF-NW 50 siphon with an LN2 vaporizer (jet), a flexible, evacuateable N2 gas line with an integrated post heating module (heater), a PT100 temperature sensor and a vacuum pump with accessories TG-L63-50KKK Kaltgas Cryogenic System, Vacuum Pump,SC3 Control Unit

TG-HD40-50 Kaltgas Cryogenic System, Vacuum Pump,SC2 Control Unit The TG-DH-40/50 KALTGAS system includes a temperature controller with current value/set point display, a safety controller, a KF-NW 50 siphon with an LN2 vaporizer (jet), a flexible, evacuateable N2 gas line with an integrated post heating module (heater), a PT100 temperature sensor and a vacuum pump with accessories, USB interface, no LN2 container.

sc4 control unit SC4 Single Channel Control Unit Safety control unit with control of the temperature of JET and heater, with temperature-control-unit type JUMO, 2 a PT 100 temperature probe connection and USB interface with KALTGAS Software.

 

gas control unit GR1 Gas Regulator Unit The gas regulation unit for gas stream of 10 to 100 liters per minute, connector for the cold gas tube, one flow meter, one manometer,one pressure balance, safety switcher and one air filter.
GR2 Gas Regulator Unit The gas regulation unit for gas stream of 40 to 200 liters per minute, connector for the cold gas tube, one flow meter, one manometer,one pressure balance, safety switcher and one air filter
SL1 Single Channel Gas Control Unit Safety control unit is for manual control of the gas stream and automatic control of the temperature of JET.

 

Containers for Storage & Transport of Biological Materials


Manufactured by KGW-Isotherm in Karlsruhe, Germany, these are special vacuum insulated containers for storage of biological materials that are to be kept at very low temperatures. Used with liquid nitrogen (LN2) the containers can keep pre frozen materials at temperatures around -195° C for long periods. Before transporting these containers you are advised to check with the transport supplier (Airline, Bus, Train) that the transport of containers with LN2 is permitted For details on liquid nitrogen, its properties and handling Liquid Nitrogen (LN2) Data

 

arpege biological materiials ln2

Arpege Large Insulated Containers for Biological Material Canister made of plastic or stainless steel All containers comply with international regulations applicable to the transport of hazardous goods by road or rail. Lightweight aluminum container with compound materials in the neck range Low evaporation rate Super insulation foil in the vacuum space Handle, Safety vacuum valve, Stainless steel racks.

 

 

bio ln2 container
BIO Vacuum Insulated Containers for Biological Materials
are vacuum insulated lightweight aluminum containers with super insulating material in the vacuum space. They are used both for storage of biological materials at very low temperatures and for transport. The BIO range is equipped with internal racks to hold 2mL or 5 mL vials.

 

 

biosafe BIOSAFE Stainless Steel Container for storage of biological specimens.For staorage of 2ml or 5 ml vials in liquid nitrogen or in the N2 gas phase reliably and economically.available in nominal capacity from 121 to 251 litres optional 420 litres

 

 

 

 

biological specimen transport VOYAGEUR Lightweight Containers for transporting Biological Materials are small aluminum vacuum insulated containers for transport of biological materials. Sizes are from 1.75 liters to 15 liters. The LN2 is absorbed in a porous substance and maintained in the gaseous phase (N2 gas) at low temperature. This means there is no risk of LN2 spillage. VOYAGEUR is delivered with racks for 2ml vials and can be supplied with 5mL racks as an option.

 

 

Cold Traps


Cold traps are used together with vacuum pumps to collect condensate products that arise from humidity or solvent evaporation. Cold traps are used with all types of vacuum pumps from rotary vane pumps to high vacuum turbomollecular pumps. Coolants are either liquid nitrogen or dry ice with acetone. Cold traps are normally contained in Dewar flasks to ensure that the coolant is insulated and remains active for prolonged periods. KGW manufactures a range of cold traps and accessories and cold trap systems mounted on trolleys with connections for vacuum pumps.

cold trap
Cold Traps with Spherical Glass Joints
two sizes are available with 150mL and 250mL condensate capacity. The cold trap finger is fitted with standard S29 spherical glass joints. Supplied with blue coated cylindrical dewar flask and fitting lid. Version is available with top mounted valve for condensate removal.

 

 

 

cold trap
Cold traps with spherical joint and O ring
two sizes are available with 150mL and 250mL condensate capacity. The cold trap finger is fitted with S29 spherical glass joints and a O ring for improved sealing. Supplied with blue coated cylindrical dewar flask and fitting lid. Picture shows version with valve for top condensate removal.

 

 




cold trap Cold Traps with glass screw thread GL 18 and PTFE Hose Nozzles two sizes are available with 150mL and 250mL condensate capacity. The cold trap finger has GL 18 glass screw thread on the connections. The cold trap is supplied with PTFE olives and screw caps. Supplied with blue coated cylindrical dewar flask and fitting lid. Version is available with top mounted valve for condensate removal.

 

 



cold finger Cold Fingers Simple cold traps, or cold finger condensers, are used in standard applications in conjunction with vacuum pumps and the condensation is forced out of the humidity or solvents used in the chemical applications. The cold trap is used to protect the vacuum pump in this case and the specialty of this type of construction is that the user does not need to use a stand to hold the cold trap. The cold trap has a rim, which is hung inside the Dewar-flask's support ring. The cold trap can be changed very quickly without any problems arising. Various sizes and versions are available

 

 

cold trapCold Trap with integrated dewar flask and drain valve cold trap with condensate capacity of 250ml and coolant capacity of 1100 mL. The cold trap has an integrated dewar flask and viewing strips. The unit is fitted with a condensate outlet valve at the bottom and is enclosed in an aluminum cover. Supplied with insulating lid. Full range of cold finger connections.

 

 

 

cold trapTwo Part Cold Traps Cold traps with separate cold fingers and dewar flasks

 

 

 

 

pertinax connectors Cold Traps with Pertinax Connectors Cold traps with glass flanges and supplied with Pertinax connectors Pertinax connectors are designed to make connections between glass flanges or from glass flanges to metal flanges. The design protects the glass flange from chipping or breakage. Sizes are available for standard DN size flanges.

 

 

 

cold trapCold Trap Accessories spare parts for KGW-Isotherm cold traps

 


 


cold trap Chemistry Cold Trap System Trolley mounted systems with two cold traps for use with vacuum pumps. the pump cam be mounted on the trolley and connected to the cold traps. In the event of failure of one trap, the process continues with the second. Available with vacuum gauge. Vacuum pumps are additional

 

 

A comprehensive document is available describing the use of cold traps and the various models available from KGW Isotherm. The document can be downloaded. Download Cold Trap Document

All glass equipment manufactured by KGW-Isotherm is made from Boro-silicate Glass in accordance with ISO/DIN specifications 3585.