VACUUM HEATING AND DRYING OVENS Gentle, intelligent and safe

Transcription

1 TT/LW/v3e VACUUM HEATING AND DRYING OVENS Gentle, intelligent and safe Quality Products. Lifetime Care.

2 Our range page vacutherm VT 6060 and 6130 complete flexibility 3 Vacucenter the complete solution 7 VT 6025 ultra compact 8 VT 6000-BL highest safety standards 10 VACUTHERM 6000 USER FRIENDLY AS NEVER BEFORE The intelligent, modular system: three sizes and two types of heating Series 6000 vacutherm equipment uncompromisingly meets all modern demands relating to heat treatment in a vacuum, whether simple routines or complicated processes up to 400 C are involved. Starting with high quality standard equipment, application specific units can be put together through selection from a wide range of equipment options. Vacuum for fast, gentle drying. Conventional methods can be unsatisfactory for many drying tasks. In these situations, drying in a vacuum is often the ideal alternative solution. As a result of their low boiling points, substances which are sensitive to heat or which decompose easily (such as pharmaceuticals, cosmetics, spices, aromatic compounds or plastic granules) can be dried more gently in a vacuum. Liquids trapped in capillaries, threads or undercuts in intricately designed parts can be dried quickly in a vacuum without leaving residue. Drying times are, as a rule, considerably shorter as a result of increased evaporation. By lowering the oxygen content, unwanted reactions can be avoided. Pressure [mbar] vaporization solid liquid Temperature in C gaseous Vacuum methods therefore offer many benefits: Gentle drying of heat sensitive materials Reduced drying times Residue free drying of intricately designed parts Elimination of oxidation problems associated with heat treatment Safe drying of flammable solvents is possible Targeted recovery of degassed products High tech equipment Process safety With heating systems that have been tried and tested for decades, uniform and reproducible drying and heat treatment is ensured. Time saving Direct heating of the inner casing jacket or of the shelves results in reduced heating up times. Heating up times are up to six times faster than in other vacuum drying ovens. Safety tested Kendro has set new safety standards with Heraeus vacutherm 6000 Vacuum Drying Ovens. With the double-pane door made of safety glass, for instance, implosion protection is guaranteed throughout the equipment's working life. The glass cannot become brittle or dull as with plastic. Special features are available for drying applications involving flammable solvents which fully comply with Explosion Protection Guidelines and which have been tested by TÜV Hanover and the VDE. DIN EN ISO 9000 User comfort With the inert gas connection incorporating a precision valve, process gas which, in the simplest case is ambient air is dispensed accurately. Drying times are therefore often reduced and condensate build-up is prevented. Furthermore, the precision valve can safely prevent blowing of powders when the work space is ventilated Cleaning The inner casing which is welded from the inside back to the rear wall has electropolished surfaces and rounded corners, and is easy to clean. Corrosion resistance The inner casings of our vacuum drying ovens are made of high quality stainless steel (1.4571) with outstanding corrosion resistance. Economic viability With their high quality standard features, extreme reliability and state of the art safety concepts, our ovens offer the best price/ performance ratio. 02

3 GENTLE, FAST AND EXTREMELY VERSATILE A well thought-out concept VT 6060 and VT 6130 Series 6000 Vacuum Drying Ovens are user friendly and encapsulate all the benefits of advanced, modular construction. MODEL M, JACKET HEATING Rated temperature of 200 C The large direct contact heating elements are reinforced at the front and therefore compensate natural loss. Homogenous temperatures on the shelves can therefore only be achieved with reinforced elements at the fron. Features Modular construction Two types of heating Temperatures to 200, 300 and 400 C Total volumes of 53 and 128 l Standard features User friendly temperature controller with PD/PID regulation for rapid heating up, minimum temperature deviance and exact temperature control Kelvitron T Microprocessor Controller for jacket heated equipment and Digicon Multi-channel Controller for shelf heated equipment. Adjustable temperature limit controller for optimal equipment and product protection in accordance with DIN protection class 2. Tested equipment safety (GS mark) Inner casing made of stainless steel (1.4571), electropolished and welded from the inside, easy to clean and corrosion resistant. Corrosion protected vacuum fittings, stainless steel tubing and ball valve. Analogue pressure display Rapid ventilation valve for quick ventilation of the work space after completion of processes. Additional precision valve for gentle ventilation. Inert gas connection for controlled dispensing of inflammable gases with the precision valve for exact adjustment of the volume flow (max. 10 l/min). Inert gas access is via the rear connection (ø 4mm). The safety valve prevents the formation of overpressure inside the inner casing. DN 25 measuring connection at the rear of the unit. All fittings are user friendly, being situated in the front panel. Two types of heating Even when evaporating liquids in a vacuum, thermal energy is consumed. This energy must be continuously replaced to prevent drying processes from being interrupted. Since air is not available as a heat transfer medium, the heating system is of particular importance. The vacutherm 6000 series is therefore available with two different types of heating: model M, jacket heating: Heat transfer is from the heated vacuum container via the shelves onto the sample container. model P, shelf heating: The shelves of the Heraeus VT 6060 P and VT 6130 P Vacuum Drying Ovens incorporate heating coils. They are quickly and evenly heated as a result of their special design, which enables heat to be trans- ferred directly to the sample container. Each shelf has its own temperature sensor and its temperature is kept at a constant set value. Each shelf is also equipped with its own temperature sensor for overtemperature protection. This type of technology produces utmost reproducibility and homogenous conditions for tailor made temperature requirements. The benefits of model P The short energy transportation route ensures rapid heating up and processing times a significant benefit. With the shelf heated vacuum drying oven, for instance, Heraeus has reduced the drying time for the humidity calculation of protein powders in production orientated quality management from 3 hours to 30 minutes. vacutherm 6000 Order numbers MODEL P, SHELF HEATING Rated temperature of 300/400 C Rapid heating up times, accurate without overheating Direct heat transfer ensures rapid processing times Separate temperature control and overtemperature protection for each shelf, shared set value Over 70 years of Heraeus experience with this type of technology has been incorporated into an optimum product. Type Total volume Order no. VT 6060 M 53 litres, jacket heating VT 6130 M 128 litres, jacket heating VT 6060 P 53 litres, shelf heating VT 6130 P 128 litres, shelf heating

4 EVERYTHING THAT'S NEEDED Options and accessories for the unique vacutherm 6000 System design for rated temperature of 400 C As a result of modifications to the electrical system, the ovens in the vacutherm 6060 P and 6130 P series with shelf heating can operate at a rated temperature of 400 C. These unique high temperature vacuum ovens are fitted with a safe door without an inspection window. This ensures that the permissible surface temperature is not exceeded even at temperatures above 300 C. If your applications require 400 C operation with inert gas we will, of course, fit your high temperature equipment on request to meet this requirement. VITON door gasket Compared to standard door gaskets, sealing technology using Accessories Viton provides increased resistance to highly caustic substances (e.g. nitrous gases). Inner casing with rounded corners This model has rounded corners not just at the side but also at the rear of the work chamber, making the inner casing even easier to clean. High quality stainless steel (1.4571) is also used. Accessories Trays for heat treatment of powders or granules. These are designed to cover the shelves, thus making full use of the area available. The large sample surface leads to shorter drying times. Accessories for vacutherm 6000 and vacutherm 6000 BL Order no. Support frame, 780 mm height for VT 6060 M/P for VT 6130 M/P Additional shelf (incl. 2 shelf supports) for VT 6060 M for VT 6130 M Tray for VT 6060 M/P made of stainless steel for VT 6060 M/P made of aluminium for VT 6130 M/P made of stainless steel for VT 6130 M/P made of aluminium Stainless steel vacuum connection kit for tubing with a diameter of 10 mm Options Options for vacutherm 6000 M/P VT 6130 with direct measurement of sample temperature Order no. RS 232 computer interface Digital pressure display Pressure controller with solenoid valve VITON door gasket for 6060 M and 6060 P VITON door gasket for 6130 M and 6130 P Daily program timer, mechanical hour timer (20 hrs at 60 Hz) Digital sample temperature display with flexible Pt 100 temperature sensor and socket for external data recorder Microprocessor controlled Thermicon P program controller (for VT 6000 M only) Eurotherm 2404/P4 temperature controller with RS 232 interface (for VT 6000 M only) Eurotherm 2404/P4 temperature controller with RS 422/485 interface (for VT 6000 M only) Digicon S temperature controller with interface 0-20 ma/0-10 V (200 ºC): VT 6060 M and VT 6130 M (300 ºC): VT 6060 P and VT 6130 P (400 ºC): VT 6060 P VT 6130 P Rated temperature of 400 C, door without inspection window for VT 6060 P for VT 6130 P Central monitoring connection Inner casing made of stainless steel (1.4571) with rounded corners also at the rear of the work chamber; stainless steel ball valve for VT 6060 M for VT 6060 P for VT 6130 M for VT 6130 P Temperature recorder with flexible PT 100 temperature sensor (not in combinations with the 400 C version)

5 THOUGHT THROUGH IN THE FULLEST DETAIL vacutherm 6000 regulation and control modules Pressure controller with solenoid valve permits set pressure range to be recorded and constantly maintained. Digital pressure display from 1 to 1200 mbars Pressure range is controlled via two pre-selected switching points with a solenoid valve made of stainless steel Pressure control range is adjustable from 5 to 1200 mbars Signal for driving external actuators with floating contact via a socket at the rear of the oven (230 V, max. 0.5 A) Documentation of pressure pattern via recorder connection 0...1V Microprocessor controlled temperature controller Eurotherm 2404/ P4 for models M with RS 232 or RS 485 computer interface, connection via sub-d plug Temperature program with a maximum of 16 program steps Temperature recorder for models M to register the internal temperature Continuous record on thermal paper No ribbon or ink required 9.2 m paper roll sufficient for 14 days continuous use Can be switched on and off as required 24 hour timer For on/off switching of the unit within 24 or 20 hours (not in combination with sample temperature display for VT 6060) Digital sample temperature display Temperature measured directly at sample Pt 100 temperature sensor enters the vacuum chamber via a connection at the rear If necessary, easy installation and removal of temperature sensor via a plug connection It is possible to switch over to a Pt 100 recorder Microprocessor controlled temperature controller Thermicon P for models M with Integrated timer for on/off switching up to 99 hrs 59 mins. Defective temperature sensor indicator Temperature program with a maximum of 9 program steps Floating contact Connection of the oven to a central monitoring system, max. 250 V/3 A Signal for external monitoring unit when temperature monitors are switched on Central monitoring of multiple ovens is possible Ectronic analog temperature controller with analog interface Digicon S for models P and M Accurate digital display of set or actual temperature values Controller with PD/PID-action for rapid heating of the oven, minimum overshoots and control variation Analogue interface for Digicon External setting of preset value ma External temperature registration V Connection via a plug in accordance with DIN

6 VACUTHERM 6000 TECHNICAL DATA Dimensions vacutherm 6000 jacket heating shelf heating VT 6060 M VT 6130 M VT 6060 P VT 6130 P Total volume l vi (l) Front view of model VT 6060 Front view of model VT 6130 Side view of models VT 6060 and VT 6130 Internal dimensions mm bi hi ti hi hi hi Vacuum suction sockets mm Bv Hv Vacuum measuring sockets mm Hm Bm External dimensions mm Ba Ha Ta Feet height Hf Door handle depth Tr Control box width Bs Control box depth Ts Distance for options Tw Tw with inert gas connection Tw Inert Tw with models for flammable solvents Tw bl Temperature 2) Rated temperature 3) C / /400 Spatial temperature deviation 4) at 200 C ± C ± 4 ± 6 ± 3 ± 4 at 300 C ± C ± 6 ± 6 at 400 C ± C ± 7 ± 7 Temperature deviation over time with electronic controllers C = < 0.5 = < 0.5 = < 0.5 = < 0.5 Heating up time to 98 % of 2)4) 200 C min C min C min Electrical protection Protection class I I I I Protection type IP 20 IP 20 IP 20 IP 20 Vacuum Vacuum connection with DN tube shaft Ø 20 mm Measuring connection DN Max. final vacuum mbar (hpa) 1x10-2 1x10-2 1x10-2 1x10-2 Leak rate mbar x l s <1x10-2 <1x10-2 <1x10-2 <1x10-2 Shelves no. 2 (max. 4) 3 (max. 5) 2 (max. 2) 3 (max. 3) Usable area mm w/d 400/ / / /417 1) Other voltages on request 2) The values stated apply to the empty oven and vacuum operation in acc. with DIN 12880, part 2) 3) Control range M: electronic controller from T ambient + 10 C; control range P: electronic controller from T ambient + 15 C 4) Measured on the shelves 5) In line with heat transfer to the location 6) Distributed load Weight (empty) kg Permissible total load kg Max. load of shelf 6) kg Electrical input power Voltage (V~) 50/60 Hz 1) 230±10% 230±10% 230±10% 230±10% Power W Heat transfer to environment at 200 C Wh/h 5) at 300 C Wh/h 5)

7 ALL IN ONE vacucenter Vacuum Pump Stand the complete solution vacutherm and vacucenter one system for every type of application This fully equipped vacuum pump stand is designed for vacutherm 6060 and 6130 Vacuum Drying Ovens. Three types of vacuum pump are available depending on the area of application (pump in lower cabinet). Central power supply and single mains switch for both vacuum oven and pump (400 V mains connection incl. adaptor for 400 V/230 V mains connection for vacucenter with VT 6060 M, VT 6060 P and VT 6130 M Vacuum Drying Ovens). Separate switch for pump operation. Hours-of-operation counter for keeping track of oil changes for rotary vane pumps. vacucenter is not designed for use with vacutherm 6000 BL (for flammable solvents). Adjustments to suit installation for work with flammable solvents can be made by our project engineers. vacucenter Vacuum Pump Stand Technical Data and Order Numbers vacucenter with pump model HMD 8 HMD 4C HRE 8 Voltage V3N~, 50/60 Hz Max. rated power kw External dimensions (w/h/d) mm 895/650/ /650/ /650/900 Total weight kg Protection type I I I Order no. 1) ) in combination with VT 6060 or VT 6130 READY TO CONNECT Vacuum pumps for vacuum drying ovens: quality, power and a long service life HMD 8 three-step diaphragm pump Standard pump for drying processes involving water and relatively non-caustic vapours. Features: condensate trap and drain cock. 100 % oil free, requires little maintenance. Powerful. Short pump-down times. Suitable for all vacutherm 6000 ovens. HMD 4C three-step diaphragm pump Chemical pump for drying processes involving caustic/corrosive vapours. Fully lined with PTFE and other fluorinated hydrocarbons. Functional design: integrated glass condensate trap, which empties quickly, and an emission condenser with cooling, supplied as standard. We recommend this chemical pump for all vacutherm 6000 ovens in particular the BL model. HMZ 2C two-step diaphragm pump Features and applications as HMD 4C but excluding emission condenser. Due to its low pump volume, we recommend it for the VT HRE 8 one-step rotary vane pump Precision vacuum pump designed for low pressure applications (<1 mbar). Features: condensate trap and drain cock on the suction end, trap with integrated oil filter on the pressure end and permanent gas ballast. Suitable for all vacutherm 6000 ovens in particular for heat treatment without liquids. pressure [mbar] pump-down times [mins] VT 6130 with HMD 8 VT 6060 with HMD 4C VT 6060 with HMD 8 VT 6130 with HRE 8 VT 6130 with HMD 4C VT 6060 with HRE 8 Pump-down times Vacuum pumps Technical Data and Order Numbers Pumps Diaphragm pumps Rotary vane pumps HMD 8 HMD 4C HMZ 2C HRE 8 Rated pumping capacity (Pneurop) m 3 /h Total final pressure without gas ballast mbar Total final pressure with gas ballast mbar <10 <10 <20 6 x 10-1 Water vapour compatibility mbar 40 Capacity of trap ml Weight kg Order no All Heraeus pumps are equipped with the necessary components for connection to Heraeus Vacuum Ovens. 07

8 SMALL BUT WAIT AND SEE VT 6025 the compact vacuum drying oven This is Heraeus vacuum technology at its best. The stainless steel inner casing which is welded from the outside is electropolished and therefore exceptionally resistant to corrosion. All parts that come into contact with media are made of stainless steel. The work chamber is ventilated via a rapid valve. The VT 6025 is a low price starter model with a high level of technology. Features Deluxe oven Total volume of 25 l Temperatures to 200 C Compact equipment versions Standard model features Jacket heating Kelvitron microprocessor temperature controller with digital temperature display Analogue pressure display Adjustable temperature limit cut-off (protection class 2 in accordance with DIN 12880) and Stainless steel (1.4571) inner casing Ventilation valve The inner casing which is welded from the outside is made of stainless steel (1.4571) and electropolished, making it highly resistant to corrosion. All parts that come into contact with media, including the ball valve, are made of stainless steel. The work chamber is ventilated via a rapid valve. The VT 6025 therefore provides a low cost entry to vacuum technology at a high level. The deluxe version is designed for applications in chemical-pharmaceutical environments. The inner casing is seamlessly welded from the inside Inert gas connection for precise release of inflammable, nontoxic gases (VDI 2046) with precision valve and overpressure safety valve Deluxe models have a DN 25 measuring connection at the rear Further equipment options Additional equipment options for pressure and temperature documentation are offered to meet documentation requirements (ISO 9000, GLP/GMP). All other features are identical to those of the standard oven. Standard VT 6025 The VT 6025 offers all vacutherm 6000 benefits: Process safety as a result of the proven Heraeus heating design Tested equipment safety (GS mark) Application comfort in a variety of different equipment options Easy to clean work space High resistance to corrosion Best price/performance ratio Work space with two additional shelves 08

9 VT 6025 TECHNICAL DATA Dimensions Total volume l 25 Internal dimensions mm (w/h/d) 300/275/307 Internal height above shelf mm 120 External dimensions mm (w/h/d) 480/600/450 Shelves number 2 Max. number 4 Usable area mm (w/d) 270/250 Weight (empty) kg 58 Total permissible load kg 40 Max. load/shelf 6) kg 20 Electrical power Rated voltage (V~) 50/60 Hz 1) V~ 230 ± 10% Rated power W 1300 Power consumption (empty) at 200 C 5) Wh/h 340 Temperature 2) Rated temperature 3) C 200 Spatial temperature deviation at 200 C 4) ± C ± 4 Temperature deviation time at 200 C ± C 0,5 Heating up time to 98 % of 200 C 4) min <100 Electrical protection Protection class I Protection type IP 20 Vacuum Max. final vacuum mbar (hpa) 1x10-2 Leate rate mbar x l s < 1x10-2 VT 6025 Order Numbers Units Order no. VT 6025 Standard oven VT 6025 Deluxe oven with inert gas connection VT 6025 Deluxe oven with inert gas connection and digital pressure display with recorder output VT 6025 Deluxe oven with inert gas connection and digital pressure display with recorder output and Digicon S temperature controller with interface 0 20 ma/0 10 V VT V standard version VT 6025 front view VT 6025 side view 1) Other voltages on request 2) The values stated apply to the empty oven and vacuum operation (measured in acc. with DIN 12880, part 2) 3) Control range with electronic controller from T ambient + 15 C 4) Measured on the shelves 5) In line with heat transfer to the location 6) Distributed load Options/Accessories for VT 6025 Vacuum Drying Oven Precision control valve (only for order no and ) Additional shelf (incl. shelf supports) RS 232 computer interface

10 A SAFE BET Vacuum drying ovens for flammable solvents Heraeus vacutherm 6000 BL Vacuum Drying Ovens safely dry samples that contain flammable solvents whose vapours form combustible or explosive mixtures when exposed to air. They offer a unique safety concept which, even in the case of unsupervised operation, provides optimum protection for the user and the environment. Features: Unlimited quantities of materials exposed to solvents Rated temperature of 200 C/300 C TÜV and GS tested Total volume of 53 l and 128 l (25 l on request) Safety concept Meets the requirements of Explosion Protection Guidelines Pressure dependent activation of the heating elements Precision control valve allows inert gas operation Forced inertisation in the case of an inadvertent increase in pressure VT 6060 BL with shelf heating Safe, user friendly operation Our superb safety concept means that users do not have to accept limitations to working temperatures. Awkward calculations to obtain the working temperature due to the composition of solvents are therefore not required. You can even dry solvent mixtures in Heraeus Ovens, as our safety features mean that you do not need to worry about ignition temperatures. The responsibility for the safe operation of this oven is therefore not transferred to the user. Loading of the ovens can take place at internal temperatures of < 50 C. Cooling down to room temperature is not required. Drying can begin without waiting, and there is equally no waiting when finishing. Features A modern temperature controller with PID regulation, an adjustable overtemperature controller and an analogue pressure indicator are supplied as standard. An inert gas connection with a precision valve provides ventilation for the oven and is used for operation with process gases. During ventilation powders are not blown around. All ovens also feature a forced inertisation system which, in the event of an accidental increase in pressure, prevents the formation of explosive mixtures. A further safety feature ensures that the heating elements are only switched on once the pressure has fallen below the minimum ignition pressure level. All parts that come into contact with media, in particular the ball valve, are made of stainless steel. The inner casing, made of stainless steel, is electropolished and therefore highly resistant to corrosion. Processing is not unnecessarily influenced through reductions in temperature. This results in high quality with short processing times. Short processing times A jacket heating system up to 200 C or shelf heating up to 300 C is available, with total volumes of either 53 or 128 litres. In the case of jacket heating, the direct connection of the heating system to the chamber, or the integration of the heating coils directly into the shelves, provides rapid heat transfer, resulting in short heating up times for your load. Available on request Digital sample temperature display Digital pressure display Digital pressure control vacucenter VT 6025 as BL model Technical data The vacutherm 6000 BL technical data is identical to that of the vacutherm 6000 series and can be seen in the table on page 6. 10

11 TECHNICAL FEATURES vacutherm 6000: this much safety is a must 500 Acetone - C H 3 COCH 3 0,5 Ignition temperature in C Heating enabled Alcohol - C 2 H 5 OH Ether - (C 2 H 5) 2 O 0,4 0,3 0,2 0,1 Minimum ignition energy in mjoule Minimum ignition pressure in mbar Pressure dependent start up of heating at < 80 mbar. Forced inertisation of the chamber in the case of accidental increase of pressure above 130 mbar unique! Ventilation of the control area through two independently operating fans, in order to avoid access of solvents. No permanent gas use. Flame filter to separate vacuum oven - vacuum pump. The flame filter prevents the spreading of flames and therefore protects the vacuum oven against sources of ignition. We recommend the flame filter as an accessory for use with solvents at ignition temperatures of < 21 C. sample Double glazed sliding door made of safety glass which, unlike plastic, does not become opaque as a result of demanding laboratory conditions. Tested explosion protection of the double glazed sliding door, in accordance with GS approval. Standard inert gas connection for the ventilation of the oven and for operation with process gases. During ventilation powders are not blown around. vacutherm 6000 BL Order Numbers Units Order no. VT 6060 M-BL 230 V ~, 50/60 Hz, jacket heating, 200 C, 53 l VT 6130 M-BL 230 V ~, 50/60 Hz, jacket heating, 200 C, 128 l VT 6060 P-BL 230 V ~, 50/60 Hz, shelf heating, 300 C, 53 l VT 6130 P-BL 230 V ~, 50/60 Hz, shelf heating, 300 C, 128 l Options Manufacturer's Calibration Certificate Certificate of calibration for 150 C at centre of the work space Calibration at an additional measuring point (max. 2) Accessories Flame filter for solvents Support frame, 780 mm height for VT 6060 M/P-BL for VT 6130 M/P-BL Additional shelves including shelf supports for VT 6060 M-BL for VT 6130 M-BL Tray for VT 6060 M-BL made of stainless steel for VT 6060 M-BL made of aluminium for VT 6130 M-BL made of stainless steel for VT 6130 M-BL made of aluminium Stainless steel vacuum connection kit for tubing with a diameter of 10 mm HMD 4C diaphragm pump

12 FAST AND PRECISE SERVICE TO EACH HIS OWN Challenge our Customer Projects Department! In addition to standard features, we offer further options to meet customer specific requirements. As an example, here are some of the options from our vast choice of features: Equipment in acc. with GMP guidelines Measuring, regulation and control accessories at customer request Acid and alkaline solution resistant coatings Explosion protection for sample and personnel Solvent recovery Underbench installation and other versions depending on field requirements Special features for a variety of applications High temperatures (max. 500 C) Vacuum ovens for heat and temperature processes with automatic programming Consult our product engineers for more information. EVT 6130 MB Vacuum Drying Oven for underbench installation Vacuum soldering and vacuum tempering equipment Fast response times, competent solutions: that is our performance promise to our customers all over the world. Our comprehensive service package does Fully and partly automatic vacuum soldering and tempering equipment with directly heated and cooled sample shelves, suitable for soldering under an inert gas atmosphere using a non flammable form gas N 2 /H 2 95/5 % or for heat treatment under vacuum. Customer specific equipment modifications Precise soldering with exact reproducibility Excellent operation and process safety Low oxygen partial pressure Negligible protective gas consumption Small footprint Vacusolder vacuum soldering equipment not only include repairs and maintenance. Your partner For us, service means technological competence, advice on applications and excellent logistics. The basis for all this is our equipment's outstanding quality. For that reason, your decision to work together with Kendro is also the first step towards a reliable and reassuring service partnership. Australia Kendro Laboratory Products Lane Cove DC NSW 2066 Tel. +61 (02) Fax. +61 (02) info@kendro.com.au Austria Kendro Laboratory Products GmbH Wien Tel. +43 (1) Fax +43 (1) office@kendro.at Denmark Kendro Laboratory Products AB Albertslund Tel Fax info@kendro.dk France Kendro Laboratory Products Courtaboeuf cedex Tel. +33 (1) Fax +33 (1) info@kendro-lab.fr Germany Kendro Laboratory Products GmbH Hanau Tel +49 (6181) Fax:+49 (6181) info@kendro.de India Kendro Laboratory Products (India) Pvt. Ltd. New Delhi Tel. +91 (11) Fax +91 (11) kendro.india@vsnl.com Italy AHSI S.p.A. Cavenago Brianza Tel. +39 (02) Fax +39 (02) ahsidue@tin.it Poland Kendro Spólka z.o.o. Warszawa Tel. +48 (22) Fax +48 (22) kendro.warszawa@kendro.com.pl Portugal Heraeus S.A. Cacem Tel (1) Fax +351 (1) heraeus@mail.telepac.pt PR China Kendro Laboratory Products (H.K.) Ltd. Hong Kong SAR Tel Fax @compuserve.com Spain Heraeus S.A. Madrid Tel. +34 (91) Fax +34 (91) heraeus@mx3.redestb.es Sweden Kendro Laboratory Products AB Upplands Väsby Tel. +46 (8) Fax +46 (8) info@kendro.se Switzerland Kendro Laboratory Products AG Zürich Tel. +41 (1) Fax +41 (1) kendro-ag@swissonline.ch Kendro Laboratory Products SA Carouge-Genève Tel. +41 (22) Fax +41 (22) kendro-sa@swissonline.ch U.K./Ireland Kendro Laboratory Products Limited Bishop s Stortford Herts Tel. +44 (1279) Fax +44 (1279) kendro@kendro.co.uk USA Kendro Laboratory Products L.P. Newtown Tel. +1 (800) Fax. +1 (203) info@kendro.com All other International Sales in Europe, Middle East, Africa Kendro Laboratory Products International Sales Hanau Germany Tel. +49 (6181) Fax +49 (6181) info@kendro.de All other International Sales in Asia Pacific, Latin America Kendro Laboratory Products International Sales Newtown USA Tel. +1 (203) Fax. +1 (203) info@kendro.com Canada Kendro Laboratory Products International Sales Newtown USA Tel. +1 (203) Fax. +1 (203) info@kendro.com Internet Kendro Laboratory Products a worldwide company formed by the merger of Heraeus Instruments and Sorvall. Should your country not be included in the address list, please contact Kendro Laboratory Products International Sales in Germany or USA. Subject to change without notice. Printed in Germany 6C 7/99VN 4t Preuß