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The Provita company offers adsorption dryers with cold and hot regeneration of its own production. Industrial installations are equipped with high-quality components that ensure reliability and long service life. They are capable of operating at a pressure of 4 to 16 bar and are drained to a TRD (dew point under pressure) of -70 ° C. Working pressure: 4 — 16 bar Dew point: -20 to -70°C Capacity: from 50 to 5000 m3/hour

The generators are designed to supply analytically clean air to flame ionization detectors and gas analyzers. They are available in two versions depending on performance and output pressure. Thanks to the presence of a system of catalytic purification of air from hydrocarbons, the generator can significantly improve the accuracy and sensitivity of chromatographic analyses. Technical specifications Air capacity reduced to normal conditions is not less than 1.2 l/min Outlet air pressure is 355 ± 5% kPa(3.5 ati) Output pressure stability at constant flow rate is not worse than ± 5 kPa Stability of the output pressure when the flow rate changes from 0.3 l/min to the maximum value is not worse than ± 7 kPa Output concentration of hydrocarbons is not more than 0.1 ppm The concentration of water vapor at 20°C and 100kPa, is no more than 10 ppm Ready time after switching on is no more than 30 min Power consumption is not more than 150 VA Overall dimensions of the generator (width x depth x height) are not more than 230x470x450 mm The mass of the generator is not more than 15 kg Working conditions: ambient temperature, °C from +10 to +35 relative humidity of the ambient air, % 80 power supply from a single-phase network: AC voltage, 220 ± 10% and frequency, Hz 50 ± 1

The GA-400-N nitrogen generator (hereinafter referred to as the generator) is a modification of the GA-400 nitrogen generator and is designed primarily to work with a storage tank (receiver) in which a certain "reserve" of nitrogen can be created. Unlike the GA-400, the GA-400-H generator has a built-in pressure monitoring system for nitrogen accumulated in the receiver, which puts the generator into "standby" mode when the maximum pressure value is reached in the receiver, and restarts the generator when the pressure drops below the minimum value. This work allows you to reduce energy consumption and increase the service life of the compressor feeding the generator. Technical specifications Volume fraction of nitrogen is not less than 99.5% by volume (including impurities of inert gases — argon, neon, helium) Volume fraction of oxygen is not more than 0.5 % vol. Volume fraction of water vapor is not more than 0.002 % vol.(20 ppm) Maximum nitrogen capacity, with nitrogen pressure in the storage tank below 2 ati, is not less than 400 l/hour (6.66 l/min) Nominal inlet air pressure is 6 ati Maximum allowable inlet air pressure is 8 ati Minimum inlet air pressure is 5.5 ati Compressed air consumption, at nominal inlet pressure and maximum flow rate is no more than 3000 l/h (50 l/min) Factory setting of the maximum pressure value in the storage tank is 3.5± 0.2 ati Factory setting of the minimum pressure value in the storage tank is 2.4 ±0.4 ati Power consumption is not more than 100 VA Overall dimensions, (width x depth x height) are not more than 230x580x680 mm; Weight is not more than 35 kg Working conditions: ambient temperature, C°, from +10 to +35 Electric power supply from single-phase AC mains voltage, V, 220± 10% and frequency, Hz, 50 ± 1 Average full service life is at least 6 years The generator for electrical safety meets the requirements of Class 1, type H according to GOST 12.2.025-76

The GA-200-N nitrogen generator (hereinafter referred to as the generator) is a modification of the GA-200 nitrogen generator and is designed primarily to work with a storage tank (receiver) in which a certain "reserve" of nitrogen can be created. Unlike the GA-200, the GA-200-H generator has a built-in pressure monitoring system for nitrogen accumulated in the receiver, which puts the generator into "standby" mode when the maximum pressure value is reached in the receiver, and restarts the generator when the pressure drops below the minimum value. This work allows you to reduce energy consumption and increase the service life of the compressor feeding the generator. Technical specifications Volume fraction of nitrogen is not less than, % by volume (including impurities of inert gases — argon, neon, helium) 99.4 Volume fraction of oxygen is not more than, % vol. 0.6 Volume fraction of water vapor is not more than, % vol. 0.002 (20 ppm) Maximum nitrogen capacity, with nitrogen pressure in the storage tank below 2 ati is at least 200 l/hour (3.33 l/min) Nominal inlet air pressure is 6 ati Maximum allowable inlet air pressure is 8 ati Minimum inlet air pressure is 5.5 ati Compressed air consumption, at nominal inlet pressure and maximum flow rate is no more than 1800 l/hour(30 l/min) Factory setting of the maximum pressure in the storage tank is 3.5± 0.2 ati Factory setting of the minimum pressure value in the storage tank is 2.4 ±0.4 ati Power consumption is not more than, VA, 100 Overall dimensions (width x depth x height) are not more than, mm, 230x525x510; Weight is not more than 27 kg. Working conditions: ambient temperature, C°, from +10 to +35 Electric power supply from single-phase AC mains voltage, V, 220± 10% and frequency, Hz, 50 ± 1 Average full service life is at least 6 years The generator for electrical safety meets the requirements of Class 1, type H according to GOST 12.2.025-76

The characteristics of the device are similar to the GCHA-18D-K model. The difference is the generator capacity of 15 liters /hour. An oil-free compressor is also built into the generator, which ensures complete autonomy of the device. The warranty for the device is 18 months, for the built–in compressor - 12 months from the date of sale. Technical specifications The grade of nitrogen produced according to GOST 9293-74 is high purity, grade I Volume fraction of nitrogen is not less than, % vol. (including impurities of inert gases: argon, neon, helium) 99,999 Volume fraction of oxygen is not more than, % vol. (ppm) 0.0005 (5 ppm) Volume fraction of water vapor is not more than, % vol. (ppm) 0.0007 (7 ppm) Volume fraction of hydrogen is not more than, % vol. (ppm) 0.0002 (2 ppm) Volume fraction of the sum of carbon-containing compounds in terms of methane is not more than, % vol. (ppm) (with a concentration of methane in the supply air not more than 5 ppm)* 0.00001 (0.1 ppm) Maximum nitrogen capacity is not less than 15 liters/hour (250 ml/min) Nominal output pressure of nitrogen is 4 ati The time of setting the operating mode for single-shift operation is no more than 45 min Noise level generated by the compressor is no more than 45 dB Power consumption is not more than 200 VA Overall dimensions, (width x depth x height) are not more than, mm 230x470x510 Weight is not more than, kg 23 Working conditions: Ambient temperature, °C from +10 to +35 Electric power supply from a single-phase AC network with a voltage of 220 ± 10% and a frequency of 50 ± 1 Hz Average full service life is at least 6 years The generator for electrical safety meets the requirements of Class 1, type H according to GOST 12.2.025-76

They are designed for purification of nitrogen (BOV-1A) and air (BOV-1) from hydrocarbons Technical specifications Maximum nitrogen inlet pressure is not more than 410± 5% kPa (4 ati) Maximum allowable nitrogen consumption is no more than 350 ml/min The concentration of hydrocarbons in terms of methane in the input nitrogen is not more than 0.0025 %(25 ppm) The concentration of hydrocarbons in nitrogen at the outlet of the device at maximum flow is not more than about 0.00001 % (0.1 ppm) Ready time after switching on at a flow rate not exceeding the maximum value is no more than 30 minutes Power consumption is not more than 50 VA Overall dimensions, (width x depth x height) are not more than 185x310x310 mm Weight is not more than 5.0 kg Working conditions: ambient temperature, °C, from +10 to +35 relative humidity of the surrounding air, %, no more, at 35 °C 80 Electric power supply from a single-phase AC network with a voltage of 220 +10% -15% and a frequency of 50 ± 1 Hz

The hydrogen generator is equipped with its own microprocessor, with which you can control the operating modes of the device. It is microprocessor control that determines the autonomy of the device. Moreover, this allows you to control the basic and technical parameters of the device (pressure, flow rate, level of water poured into the tank, tightness of gas lines, electrolyzer current). For the manufacture of gas lines, exclusively inert materials are used. Technical specifications:

The device is equipped with a four-button keyboard, which is used to set parameters and control. The generator can operate in continuous mode for a long time. For refueling, especially pure or double-distilled water is used, and refueling can be done without turning off the device, on the go. Their advantage is that they significantly reduce, or even completely eliminate, the use of bottled gases to power chromatographs and gas analyzers. For nutrition, mainly double-distilled water is used, the quality of which must be no lower than grade B water according to OST 11.029.003–80, and the electrical resistivity must be no less than 1 Mohm x cm.

The devices operate from a single-phase AC electrical network with voltage from 187 to 242 W, frequency (50±1) Hz. Maximum safety of devices is achieved due to the absence of such a supply of substance in them, which could fill a chromatograph or laboratory in a short period of time. The performance of the device eliminates the occurrence of explosive situations, so the generator is considered safe to use.

In addition to air compressors of the type "KOV-4", a pure air generator of the type "GCHV" is produced. Our equipment undergoes thorough quality control, which is confirmed by certificates of conformity. The device is used to provide clean air supply to gas analyzers and flame ionization detectors of chromatographs. Technical specifications: Air capacity reduced to normal conditions, l/min, not less than 2.0 Outlet air pressure, 2.5 atm Outlet pressure stability, no more than 0.05 atm Output concentration of hydrocarbons, ppm, not more than 0.1 Concentration of water vapor at 200C and 100kPa, ppm, no more than 10 The value of the power consumption, not more than 200 VA Dimensions (width×depth×height), mm 210×440×360 Weight, not more than, kg 11

The generator is designed to produce nitrogen of the highest purity and zero air in laboratories. Differences from the GCHA-15D-60V: lower air performance; the presence of a built-in oil-free compressor ensures complete autonomy of the device. The warranty for the device is 18 months, for the built-in compressor is 12 months from the date of sale. Technical specifications The grade of nitrogen produced according to GOST 9293-74 is high purity, grade I Volume fraction of nitrogen is not less than 99,999 % vol. (including impurities of inert gases — argon, neon, helium) Volume fraction of oxygen is not more than 0.0005 % vol. (5 ppm) Volume fraction of water vapor in nitrogen is not more than 0.0007 % vol. (7 ppm) Volume fraction of the sum of carbon-containing compounds in nitrogen in terms of methane is not more than 0.00001 % vol. (0.1 ppm) Maximum nitrogen capacity is not less than 15 liters/hour (250 ml/min) Nominal output pressure of nitrogen is 4 ati Volume fraction of water vapor in the generated air is not more than 0.0007 % vol. (7 ppm) The volume fraction of the amount of hydrocarbons in the produced air in terms of methane is not more than, 0.00001% vol. (0.1 ppm), (with a concentration of methane in the supply air not more than 5 ppm) Maximum air capacity is not less than 40 liters/hour (670 ml/min) Nominal output air pressure is not less than 3.5 ati The time of setting the operating mode for single-shift operation is no more than 45 min Noise level generated by the compressor is no more than 50 dB Power consumption is not more than 300 VA Overall dimensions, (width x depth x height) are not more than 230x470x510 mm Weight is not more than 27 kg Operating conditions: ambient temperature, ° C, from +10 to +35 electric power supply from a single-phase AC network with voltage, V, 220 ± 10% and frequency, Hz, 50 ± 1 Average full service life is at least 6 years The generator meets the electrical safety requirements of class 1, type H according to GOST 12.2.025-76

They are designed for purification of nitrogen (BOV-1A) and air (BOV-1) from hydrocarbons Technical specifications Inlet air pressure is not more than 825 ± 5% kPa (8 ati) Output pressure control limits is from 0 to 413 kPa (from 0 to 4.0 ati) Minimum required excess of inlet pressure over outlet pressure is not less than 103 kPa(1 ati) Maximum permissible air flow is not more than 1.0 l/min Concentration of hydrocarbons at maximum flow rate in the outlet air is no more than 0.1 ppm Water vapor concentration at 20°C and 100 kPa is no more than 10 ppm Instability of the output pressure when the flow rate changes from 0 to the maximum value is not worse than ± 7 kPa Instability of the output pressure when the input pressure changes by ± 100 kPa is not worse than ± 7 Ready time after switching on at a flow rate not exceeding the maximum value is no more than 30 min Power consumption is not more than 50 VA Overall dimensions, (width x depth x height) are no more than 185x310x310 mm Weight is not more than 5.0 kg Working conditions: ambient temperature, °C, from +10 to +35 relative humidity of the ambient air, %, no more, at 35 ° C 80 electric power from a single-phase AC network with a voltage of 220 +10% -15% and a frequency of 50 ± 1 Hz

The nitrogen generator is designed to create an inert atmosphere, fill low-pressure tanks, "wash" test tubes with inert gas and other applications that require a large, by laboratory standards, nitrogen consumption with reduced requirements for its purity. Technical specifications Volume fraction of nitrogen is not less than 99.0 % by volume (including impurities of inert gases — argon, neon, helium) Volume fraction of oxygen is not more than, 1.0 % vol. Volume fraction of water vapor is not more than 0.002 % vol. (20 ppm) Maximum nitrogen capacity: at an inlet air pressure of 7 ati is at least 1380 l/h (23 l/min) The time of setting the operating mode for single-shift operation is no more than 30 min Minimum inlet air pressure is 7 ati Maximum allowable inlet air pressure is 8.5 ati Compressed air consumption, at nominal inlet pressure and maximum flow rate is no more than 150 l/min Power consumption is not more than 200 VA Overall dimensions, (width x depth x height) are not more than 230x580x680 mm Weight is not more than 38 kg Working conditions: ambient temperature, C°, from +10 to +35 Electric power supply from single-phase AC mains voltage, V, 220± 10% and frequency, Hz, 50 ± 1 Average full service life is at least 6 years The generator for electrical safety meets the requirements of Class 1, type H according to GOST 12.2.025-76

The characteristics of the device are similar to the GCHA-18-K model. The difference is the generator capacity of 15 liters /hour. An oil-free compressor is also built into the generator, which ensures complete autonomy of the device. The warranty for the device is 18 months, for the built–in compressor - 12 months from the date of sale. Technical specifications The grade of nitrogen produced according to GOST 9293-74 is high purity, grade I The volume fraction of nitrogen is not less than, % by volume (including impurities of inert gases — argon, neon, helium) 99.999 The volume fraction of oxygen is not more than, % vol. (ppm) 0.0005 (5 ppm) The volume fraction of water vapor is not more than, % vol. (ppm) 0.0007 (7 ppm) The volume fraction of hydrogen is not more than, % vol. (ppm) 0.0002 (2 ppm) The volume fraction of the sum of carbon-containing compounds in terms of methane is not more than, % vol. (ppm) (with a methane content in the supply air of not more than 4 ppm) 0.0003 (3 ppm) The maximum volume of nitrogen production is not less than 15 liters/hour (250 ml/min) Nominal output pressure of nitrogen is 4 ati The time of setting the operating mode for single-shift operation is no more than, min,* 45 Noise level generated by the compressor is no more than 45 dB Power consumption is not more than 200 VA Overall dimensions, (width x depth x height), not more than, mm, 230x470x510 Weight, not more than, kg 23 Working conditions: ambient temperature, C°, from +10 to +35 Electric power supply from single-phase AC mains voltage, V, 220± 10% and frequency, Hz, 50 ± 1 Average full service life are at least 6 years The generator for electrical safety meets the requirements of Class 1, type H according to GOST 12.2.025-76