INDOMET TETRA Diffusion Pump Oil
Our product INDOMET TETRA is our further development of the well-known diffusion pump oils Dow Corning™ DC 702, DC704. With our 30 years of experience as experts in vacuum technology, coupled with our know-how in the chemistry of phenyl-methyl-polysiloxanes (PMPS), we have been able to continuously develop our silicone oil, so that we can offer to you the highest quality diffusion pump oil available.
INDOMET TETRA has been specially developed for use in diffusion pumps. Our oil is suitable for all types of diffusion pumps. It is designed for a very wide vacuum pressure range. The vapor pressure and backflow are so low that the use of cold traps is not required for most vacuum applications. Ultra-high vacuum up to the 10E-9 mbar range can be achieved with cold traps, without cold traps up to the 10E-8 mbar range.
INDOMET TETRA is REACH registered and GHS and OSHA compliant. For the REACH registration, our oils have been extensively tested by leading laboratories. Excellent physical and chemical properties have been certified and no environmental or health risks have been identified.
Trust in INDOMET, one of the world's leading brands for high-performance diffusion pump oils. First choice in the vacuum industry, not only for end users, but also for manufacturers of systems and pumps. Our oils are used in over 40 countries. Let the advantages of our diffusion pump oils convince you too!
Features
- High molecular propellants for diffusion pumps
- Highest purity - crystal clear & odorless
- Suitable for all types of diffusion pumps
- Replaces all mineral and silicone oils
- Lowest ultimate pressures
- High fore-vacuum resistance
- High pumping speed
- Lowest oil backflow
- Chemically inert, resistant to oxidation
- Safe for health, the environment and transport
- Low operating costs
INDOMET TETRA
| Material / Chemistry: | Methyl-Phenyl-Siloxane |
| Molecular weight: | 484 |
| Density (25 ° C): | 1.07 g/cm³ |
| Ultimate pressure: | < 10E-8 mbar |
| Freezing point: | -20°C |
| Boiling point: | 215°C (0,67 mbar) |
Our Universal Talent
INDOMET TETRA, the universal talent for all diffusion pumps and applications.
Due to the high level of awareness of the silicone oils DC 704 / DC 702 from the past, our INDOMET TETRA is the best alternative on the market. We have further developed and improved the basic chemical poly methyl phenyl siloxane.
INDOMET TETRA is ~ 98% pure and contains only vacuum-effective components. All impurities and inactive ingredients were extracted.
Operating Costs
High-quality oils, such as our INDOMET TETRA, always pay off and guarantee excellent vacuum performance. The best final pressures and the best fore-vacuum stability are guaranteed, as well as no backflow into the process chamber.
Due to our 30 years of experience in high vacuum technology, we know what is important and therefore rely on the highest quality of our products. You should also choose our quality products, as the cost of the oil is insignificant in the total cost of ownership. At the same time, we are continuously working on cost-cutting programs and are proud to be able to offer you a good price-performance ratio with our high-quality products.
We guarantee you the highest quality at a fair price.
INDOMET TETRA >>> highest quality at a fair price
Quality
Good and reliable vacuum generation is crucial for demanding high vacuum applications. The propellant used is particularly important for high vacuum diffusion pumps. The manufacture of our product
INDOMET TETRA starts with a strict quality control of the raw materials. Our multi-stage manufacturing processes are subject to a continuous audit which guarantees the highest purity of our products.
INDOMET TETRA >>> highest purity - crystal clear & odorless
Vacuum Science
High Vacuum System
Vacuum processes take place in a pressure range from 10E-2 to 10E-3 mbar. Before the process can start, all process-contaminating substances must be pumped out. For this purpose, the vacuum chamber is pumped down to a vacuum pressure of 10E-4 to 10E-9 mbar. Only then are process gases introduced and the process pressure set.
The vacuum pumping station of a high vacuum system consists of a multi-stage pumping station. The mechanically operating pumps generate a fore-vacuum. If the fore-vacuum is sufficient, the diffusion pump can be switched on.
Diffusion pumps are often used when high suction capacities are required. Diffusion pumps are cheaper to purchase than comparable high vacuum pumps. However, the operating costs of diffusion pumps are significantly higher. The diffusion pump oil must be continuously heated and then cooled down again. All of the energy is completely dissipated with the cooling water.
Diffusion Pump / Steam Jet Pump
Diffusion pumps are among the high vacuum pumps. The diffusion pumps consist of a cylindrical, water-cooled pump body and a multi-stage nozzle system inside. The boiling chamber with the propellant is located at the bottom of the pump body. The electrical heating elements are located under the floor.
The pumps require a fore-vacuum, which is generated with fore-vacuum pumps.
The oil is evaporated at a fore-vacuum pressure of <0.7 x 10E-1 mbar. The steam flows through the riser pipes in the nozzle system and exits the ring-shaped nozzles at supersonic speed. The steam jet spreads like an umbrella up to the housing wall. The steam immediately condenses on the cooled wall and flows back into the boiler room on the wall. Gases from the recipient are captured by the steam jet and carried away, compressed by the multi-stage nozzle system and finally pumped out by the backing pump.
INDOMET TETRA >>> suitable for all diffusion pumps
Propellant
In the last few decades, silicone oils have established themselves as the preferred blowing agent. INDOMET PENTA and INDOMET TETRA are made on the basis of phenyl-methyl-silioxane and have high molecular structures. You can achieve very low vapor pressures and ultimate vacuum pressures. The final pressures and vapor pressures are between 10E-7 mbar and extend into the ultra-high vacuum range of 10E-11 mbar. Our oils are chemically inert and have a very good resistance to oxidation. Even when the vacuum drops, these propellants do not oxidize and can still be used.
Polyphenyl Ether and PerFluoroPolyEther (PFPE) are special propellants for very demanding applications. They can achieve an ultra-high vacuum down to the 10E-11 mbar range and are extremely chemically resistant. There are a variety of products on the market for a relatively small number of uses. These fluids must be selected very carefully to meet the requirements of the plant type and process application. The costs for these fluids are expected to be very high.
Mineral oils (hydrocarbons) are used less frequently as they have considerable disadvantages.
They usually have a poorer vapor pressure and therefore do not achieve such good final pressures as silicone oils. Due to the unsatisfactory oxidation resistance of the mineral oils, they age much faster and have to be changed more frequently. They also harbor considerable risks in the event of vacuum drops. The oil can break down through oxidation and hydrolysis and form components that are harmful to health. In the worst case, it can also cause an explosion in the pump.
INDOMET TETRA >>> replace all mineral and silicone oils
Pre-Vacuum Resistance
The critical pre-pressure is the highest pressure that a pump can tolerate in the backline. If the pressure is higher than the critical pre-pressure, the pump can come to a standstill. The critical pre-pressure depends on the pump design, the performance of the heaters and the diffusion pump oil used in the diffusion pump.
INDOMET TETRA >>> highest fore-vacuum resistance
Suction Capacity / Suction Power
The pumping speed is the volume that flows through the suction port of a pump in a certain time. Diffusion pumps are available in all sizes, with pumping speeds from a few liters per second to over 50,000 liters per second.
The suction power is the mass flow through the suction port of a pump. The suction power is of great importance and should not be confused with the suction capacity. The suction power is important for the design of the backing pumps for a high vacuum diffusion pump.
INDOMET TETRA >>> Guarantee for maximum pumping speed
Ultimate Pressure / Vapor Pressure
The ultimate pressure is the lowest pressure that can be achieved in a vacuum system. This pressure depends on many parameters. From the cleanliness and tightness of the vacuum system, from the gas diffusion of the surfaces, from the pumping speed of the pump and from the vapor pressure of the propellant used in the diffusion pump. A good ultimate vacuum pressure cannot be achieved if the vapor pressure of the propellant is insufficient.
The vapor pressure is the pressure that is established over a medium (fluid) in a closed system at a certain temperature (thermodynamic equilibrium). In a liquid, the particles tend to leave the liquid structure at a temperature> 0 ° K.
INDOMET TETRA >>> low vapor pressure = lowest ultimate pressure
INDOMET TETRA >>> lowest oil back streaming
Oil Back Streaming
Cold caps and / or shell baffles prevent the oil from flowing back into the recipient. Vapor barriers consist of cooled baffles that prevent oil molecules from passing through. To increase the temperature difference, liquid nitrogen (< 77° K) is also used for cooling.
REACH registered and GHS, OSHA, CLP compliant
Industrial chemicals such as diffusion pump oils may only be manufactured within the EU or imported into the EU if the corresponding chemical substance is registered and tested, depending on the quantity, with the European Chemicals Agency. INDOMET TETRA is REACH registered and is GHS, CLP, OSHA compliant. Many companies import silicone oils from other non-EU countries without the required registration. This often makes buyers unknowingly criminal.
For the REACH registration, our silicone oils were comprehensively analyzed by leading laboratories. Excellent physical and chemical properties have been confirmed and no environmental or health risks have been identified. In this way, unlike the many low-quality oils on the market, we can guarantee that our products are reliable, safe and of consistently high quality.
INDOMET is the only provider on the European market who offers you not only real, but also legal security. Our registrations enable you to obtain these high-quality products on the European market in a legally secure manner.
REACH is a regulation (enforced since June 2007) of the European Union. This was issued in order to improve the protection of human health and the environment against the risks that can arise from chemicals (REACH = Registration, Evaluation, Authorization and Restriction of Chemicals). In Europe, the CLP regulation has been aligned with the GHS (Global Harmonized System of Classification, Labeling and Packing of Chemicals). There are also links to REACH legislation.
In the USA, the Hazard Communication Standard (HCS) is also aligned with the GHS. There are also links to OSHA legislation.