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The characteristics of the device are similar to the model GVCH-12A (GVCH-25A). The difference is the generator capacity of 36 liters / hour, the purity of the produced hydrogen is lower (99.998% vol). Technical specifications Purity of hydrogen in terms of dry gas is about 99.998 % Concentration of water vapor at 20OC and 3 atm is no more than 7 ppm Total hydrogen capacity reduced to normal conditions is 36 l/h The range of the specified output pressure of hydrogen is from 3.0 to 6.1 ati Stability of the output pressure of hydrogen is not worse than ± 0.03 ati The time of setting the operating mode, with the output turned off is no more than 30 min Volume of distilled water to be poured is 1.0 l Distilled water consumption is no more 0.06 l/hour Water consumption is 1.6 g/l of hydrogen The average life of a replaceable deionization filter cartridge (at maximum performance and single-shift operation) is at least 0.5 years Average pump life (for single-shift operation) is at least 0.5 years Power consumption: in stationary mode is no more than 250 VA maximum (at startup) is no more than 280 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 18 kg Operating conditions: ambient temperature, °C, from +10 to +35 powered by single-phase AC voltage, V, 220 (+10 -15)% and frequency, Hz, 50 +1 The generator for electrical safety meets the requirements of Class 1, type H according to GOST 12.2.025-76

Water purification in the device is carried out by passing it through a composition of deionization resins and sorbents. Resins and sorbents are located in filter elements placed in a replaceable cassette. The distilled water to be cleaned is poured into the feed tank, the filler neck of which is placed on the upper plane of the device and hermetically sealed with a screw cap. Technical specifications: The specific conductivity of the resulting water, not more than, mkSxcm 0.20 Capacity, at least, l/h 6 Operating time of the replaceable cassette (total volume of purified water), not less than 700 liters Volume of refilled distilled water, l. 1 Power consumption, not more than, VA 20 Overall dimensions (width×depth×height), mm 180×450×380

The characteristics of the device are similar to the GVCH-12D model; the difference is in the absence of a reactor to remove traces of oxygen and the capacity, respectively, is 25 liters/hour (416 ml/min). Technical specifications Purity of hydrogen in terms of dry gas about 99.998% The concentration of water vapor at 20 OC and 1atm is not more than 10 ppm In the output pressure stabilization mode The range of the specified output pressure of hydrogen is from 1.5 to 6.1 ati Stability of the output pressure of hydrogen is not worse ± 0.02 ati Maximum hydrogen capacity, reduced to normal conditions is 25 l/h The time of setting the operating mode, with the output turned off is no more than 20 minutes In the performance stabilization mode: The range of the specified hydrogen performance is from 0 to 25 l/h Maximum developed pressure in performance mode is 5.0 ati Volume of distilled water to be poured is 1.0 l Distilled water consumption is not more than 0.04 l/hour Water consumption is 2.4 g/l of hydrogen The average life of a replaceable deionization filter cartridge (at maximum performance and single-shift operation) is at least 0.5 years Average power consumption: in stationary mode is no more than 200 VA maximum (at startup) is no more than 250 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 16 kg Operating conditions: ambient temperature, °C, from +10 to +35 powered by single-phase AC voltage, V, 220 (+10 -15)% and frequency, Hz, 50 +1 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 GVCH-12D model; the difference is in the absence of a reactor to remove traces of oxygen and the capacity, respectively, is 6 liters/hour (100 ml/min). Optionally equipped with a reactor for using hydrogen as a carrier gas. Technical specifications Purity of hydrogen in terms of dry gas is about 99.995% Concentration of water vapor at 20 °C and 1 atm is no more than 5 ppm In the output pressure stabilization mode The range of the specified output pressure of hydrogen is from 1.5 to 6.1 ati Stability of the output pressure of hydrogen is not worse than ± 0.02 ati Maximum hydrogen capacity reduced to normal conditions is 6 l/h The time of setting the operating mode, with the output turned off is no more than 20 minutes In the performance stabilization mode: The range of the specified hydrogen performance is from 0 to 6 l/h Maximum developed pressure in performance mode is 5.0 ati Volume of distilled water to be poured is 1.0 l Distilled water consumption is no more 0.01 l/hour Water consumption is 1.6 g/l of hydrogen The average life of a replaceable deionization filter cartridge (at maximum performance and single-shift operation) is at least 1 year Average power consumption: in stationary mode is no more than 80 VA maximum (at startup) is no more than 100 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 Operating conditions: ambient temperature, °C, from +10 to +35 powered by single-phase AC voltage, V, 220 (+10 -15)% and frequency, Hz 50 ± 1 The generator for electrical safety meets the requirements of Class 1, type H according to GOST 12.2.025-76

Capacity, l/h 5.0 (-10%) Purpose preparation of distilled water of type 2 according to GOST 52501-2005 "Water for laboratory analysis" FS.2.2.0019.18 "Water for injection" Heating elements Heating element 3.5 kW 220V (stainless steel) – 1 pc. The quality of the produced water GOST 52501-2005 "Water for laboratory analysis", FS.2.2.0019.18 "Water for injection" Type of current, frequency, voltage alternating single-phase, 50 Hz, 220 V Power consumption, kW 3,6 Overall dimensions (L×W×C), mm 424x417x454 Weight, kg 20,0

Capacity, l/h 15,0 (-10%) Purpose preparation of distilled water of type 2 according to GOST 52501-2005 "Water for laboratory analysis" FS.2.2.0019.18 "Water for injection" Heating elements Heating element 3.0 kW 220V (stainless steel) – 3 pcs. The quality of the produced water GOST 52501-2005 "Water for laboratory analysis", FS.2.2.0019.18 "Water for injection" Type of current, frequency, three-phase alternating voltage, 50 Hz, 380 V Power consumption, kW 9,1 Overall dimensions (L×W×C), mm 550x500x625 Weight, kg 39.0

Nitrogen generators are designed to create an inert atmosphere, fill low-pressure tanks, "rinse" 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 % by volume (including impurities of inert gases — argon, neon, helium) 99.6 Volume fraction of oxygen is not more than, % vol. 0,4 Volume fraction of water vapor is not more than, % vol. 0.002 (20 ppm) Maximum nitrogen capacity is at least 200 (3.33 l/min), l/h Maximum nitrogen outlet pressure is not less than 3.5 ati The time of setting the operating mode for single-shift operation is no more than 30 min Nominal inlet air pressure is 6 ati Maximum allowable inlet air pressure is 8 ati Minimum inlet air pressure is 5 ati Compressed air consumption, at nominal inlet pressure and maximum flow rate is no more than, l/h, 1200 (20 l/min) 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 26 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

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

It is intended for obtaining in laboratory conditions from distilled especially pure (deionized) water used for the preparation of solutions, chromatographic samples, refueling of electrolytic hydrogen/oxygen generators and other purposes. Technical specifications The specific conductivity of the resulting water is not more than 0.20* mkSxcm Capacity is at least 6* l/h Metal ion content is not more than: Fe, Pb, Ni, Co 5*mcG/l Zn, Cd, Cu, Mn 1*mcG/l The optical density of ammonia relative to bidistilled water is no more than D - 0.01* Operating time of the replaceable cassette (total volume of purified water) is not less than 700 liters. Volume of refueled distilled water is 1 l Overall dimensions are 440x200x430 mm The mass of the refilled device is not more than 9.5 kg Working conditions: ambient temperature from +10°C to +35°C Power supply from single-phase AC 220 V., 50 Hz The power consumption is not more than 20 VA.

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. The warranty for the device is 18 months, for the built–in compressor - 12 months from the date of sale. Technical specifications Volume fraction of nitrogen is not less than 99.5 % vol. (including impurities of inert gases — argon, neon, helium) Volume fraction of oxygen is not more than 0.5% vol. (ppm) Volume fraction of water vapor is not more than 0.002 % vol. (ppm) (20 ppm) Maximum nitrogen capacity is not less than 400 l/hour (6.66 l/min) Nitrogen outlet pressure is 4±0.2 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 60 db Power consumption is not more than 800 VA Overall dimensions, (width x depth x height) are not more than 360x680x550 mm Weight is not more than 46 kg Operating conditions: ambient air temperature, oS from +10 to +35 electric power supply from single-phase AC voltage, 220 ± 5% frequency, Hz 50 ± 1 Average full service life is at least 6 years The generator for electrical safety meets the requirements of GOST 12.2.025-76. class 1, type