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GCHA-120 nitrogen generators are designed to produce in laboratory conditions nitrogen of the highest purity that is used to power analytical instruments, boxes with an inert atmosphere. 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 % by volume (including impurities of inert gases — argon, neon, helium) 99.999 Volume fraction of oxygen is not more than, % vol. 0.0005 (5 ppm) Volume fraction of water vapor is not more than, % vol. 0.0007 (7 ppm) 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) Maximum nitrogen capacity is at least 120 (2.0 l/min), l/h Nominal nitrogen output pressure (with the throttle open) is 4 ati The time of setting the operating mode for single-shift operation is no more than 45 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, l/h, 3600 (60 l/min) Power consumption is not more than, VA, 100 Overall dimensions, (width x depth x height) are not more than, mm, 230x580x680; Weight is not more than, kg 32 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 nitrogen adsorption generator is a special equipment designed to produce nitrogen gas from atmospheric air by the method of short-cycle non-heating adsorption. Capacity:1.8—1000 m3/h Purity: 99.99—99.9999 % Pressure: 4-450 bar

A membrane nitrogen station is a set of equipment for the production and supply of nitrogen under high pressure obtained from atmospheric air by the method of membrane separation. Unlike the membrane nitrogen plant, the membrane nitrogen station is equipped with additional equipment: a booster compressor that creates the necessary pressure. Put the squeeze on the pump. Composition of a typical membrane nitrogen station: 1. Air compressor 2. Dehumidifier 3. Main filter block, including coal column 4. Air receiver 5. Membrane nitrogen generator 6. Nitrogen receiver 7. Nitrogen booster compressor putting the squeeze on

Adsorption nitrogen plant is a set of equipment for the production of nitrogen from atmospheric air by short–cycle heat-free adsorption at a pressure of up to 13 bar. The adsorption nitrogen plants of the Provita company allow to produce nitrogen with a purity of up to 99.9999%. The capacity of the plants ranges from several liters per minute to hundreds of cubic meters per hour. The basis of the installations are nitrogen adsorption generators developed and manufactured by our company. A carbon molecular sieve with a developed microporous structure is used as an adsorbent. The gas generator requires dry compressed air with a pressure of at least 6 bar to operate, so the installation includes an air compressor, as well as a dehumidifier and an air receiver (if they are not part of the compressor). The source air must be cleaned of dust and oil, which is carried out by the main filters included in the installation or directly by the nitrogen generator. The nitrogen receiver is used for the accumulation of production gas.

Provita Company designs and manufactures nitrogen compressor stations based on sea containers (10, 20, 30, 40–feet) and sandwich panel block boxes with standard dimensions and fasteners, which allows them to be transported by road, rail and sea transport. A mobile compressor unit can be carried out on an automobile chassis or on a sled for transportation to remote hard-to-reach regions. The nitrogen compressor station can be supplied in various climatic versions: northern (ambient temperature up to -55°C) standard (from -45 to +45°C) tropical (up to +55°C)

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

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 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

An analogue of GCHA-21, but equipped with a built-in system of catalytic purification of the resulting nitrogen from hydrocarbons. GCHA-21D nitrogen generators are designed to produce nitrogen of the highest purity in laboratory conditions. The warranty period of operation of the generator is 18 months from the date of sale by the manufacturer. 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, % vol. (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 concentration of methane in the supply air not more than 5 ppm)* 0.00001 (0.1 ppm) Maximum nitrogen capacity is not less than 21 liters/hour (350 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 Nominal inlet air pressure is 6 ati Maximum allowable inlet air pressure is 7 ati Minimum inlet air pressure is 5 ati Compressed air consumption, at nominal inlet pressure is no more than 300 l/h (5 l/min) Power consumption is not more that 110 VA Overall dimensions, (width x depth x height) are not more than, mm 230x425x510 Weight, not more than, kg 25 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

It is intended for obtaining nitrogen of the highest purity and zero air in laboratory conditions. The warranty period of operation of the generator is 18 months from the date of sale by the manufacturer. 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) The volume fraction of hydrogen in nitrogen is not detected 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 21 liters/hour (350 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 72 liters/hour (1200 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 Nominal inlet air pressure is 6.0 ati Maximum allowable inlet air pressure is 7 ati Minimum inlet air pressure is not less than 5.5 ati Compressed air consumption, at nominal inlet pressure is no more than 480 l/h (8 l/min) Power consumption is not more than 150 VA Overall dimensions, (width x depth x height) are not more than 230x525x510 mm Weight is not more than 28 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

Designed for laboratory production of nitrogen of the highest purity that are used to power analytical instruments (chromatographs, express analyzers of hydrogen content in metals, organic carbon concentration meters, sample evaporators, etc.), boxes with an inert atmosphere.

The nitrogen adsorption generator is a special equipment designed to produce nitrogen gas from atmospheric air by the method of short-cycle non-heating adsorption. Capacity:300-10000 m3/h Purity: 90-99.9999 % Pressure: 4-450 bar