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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

The TDS-3 includes a heating column with a sorption tube, which is installed on the evaporator of the chromatograph and a control unit located on a special bracket on the right side panel of the chromatograph Technical characteristics of TDS-3 Desorption temperature (column heating), 0C to 400 Heating speed, 0C/min at least 500 The cooling time when moving to a cold zone is no more than 10 seconds. Cooling time from 300 0C to 50 0C, min. no more than 10 Continuous operation mode Power consumption, W not more than 250 Dimensions of the sorption tube, (Ø, length), mm. Material glass, stainless steel 5/110, 5/114, 6/115, 6.35/89 Electric power supply from 187 to 242 V, 50 Hz. The display of the measured temperature and the setting of the temperature on the display is The discreteness of setting the desorption temperature, 0C 0.1

To switch the nozzle columns, conventional taps (reverse purge, 6-, 8- and 10-port) are used, which, however, are not suitable for switching capillary columns. An alternative way to switch capillary columns is to change the flows in the capillary columns, which is produced by the so-called "Dins switches" (PD). TECHNICAL CHARACTERISTICS of PD The switching time setting range is from 0.1 to 999 min. Switching time is 0.1 s. The dead volume of the crane is less than 1 µl. The temperature of the tap is no more than 350 °C. The pressure in the crane line is not more than 0.4 MPa. Electric power supply — 5 V.

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 FGH-1-2 chromatographs have retained the main advantages of the FGH-1 model – mobility and ease of operation and maintenance. At the same time, FGH-1-2 has all the advantages of a modern multichannel chromatograph – the ability to reliably identify and accurately determine the concentrations of various pollutants of environmental objects. The additional use of automatic identification in the processing of chromatograms simultaneously through both channels makes FGH-1-2, in fact, a universal selective gas analyzer of organic substances using the chromatographic separation method. In FGH-1-2, as well as in FGH-1, all methodological problems have been solved: all measurement methods (MI) used are certified, the devices are equipped with sampling devices prescribed in MI, the devices are graded according to the required substances, independent control of the stability of calibration characteristics and measurement errors is provided.

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

GC and MS interface Capillary direct interface, independent temperature control (50-300 0 S) The filament of the cathode (filament) is a double filament for electron ionization (EI), the maximum current is 300 µA. Double thread increases the service life. Two independent switchable cathodes Temperature of the ion radiation source Independent heating and temperature control, maximum value 350 0 C (adjustable) Transparent polymer window on the front panel there is no visual control of the state of the cathodes Ion radiation source Lenses made of ceramic and with a patented coating enhance the focusing effect, which significantly increases the efficiency of ionization, an electrode with a patented reflective surface improves focusing Tubular lenses enhance the focusing effect, which significantly increases the ionization efficiency, an electrode with a patented reflective surface improves focusing Energy ionization 10-100 eV The mass analyzer is a high-precision quadrupole with a filter that reduces the contamination of the main quadrupole and eliminates the influence of photonic noise on the analysis High-precision molybdenum quadrupole with prequadrupole (replaceable), which reduces the contamination of the main The detector is an electronic multiplier with a high-voltage secondary emiting electrode (dinode) of high energy 3D geometry to improve sensitivity. The amplifier of weak voltage signals effectively reduces network noise, improves the signal-to-noise ratio during electron ionization and provides a large linear dynamic range. It is possible to install an additional detector Mass range 2.0-1200 a.e.m. 1.5-1050 a.e.m. Mass stability Less than 0.1 a.e.m. for 48 hours Signal ratio noise At least 1500:1 with mass to charge (m/z) 272 At least 150:1 with mass to charge (m/z) 272 (with signal filtering 500:1) Linearity Not less than 107 Not less than 106 Precision < 5% RSD 9n=7, SIM, 100 fg OFN) no System sensitivity IDL < 10 fg (SIM mode, OFN according to m/z 272) no Maximum scanning speed 20000 a.m./s 11000 a.m./s Operating modes Scap, SIM, Scan/SIM, MicroScan and the innovative Flexible-SIM algorithm for finding trace amounts of components no Setting Automatic setting MSD on the PFTBA spectrum and m/z control of oxygen, nitrogen and water no Pumping pump Oil plate-rotor vacuum pump with a pumping speed of 66 l/min Oil plate-rotor vacuum pump with a pumping speed of 165 l/min Turbo pump Turbo molecular pump with magnetic levitation, with a pumping speed of 85 l/s (can be replaced by 300 l/s) Turbo molecular pump with magnetic levitation, with a pumping speed of 71 l/s (possible replacement by 260 l/s) RF detector power Allows you to use three points for calibration in the entire mass range and get good linearity in scanning mode Software Rus./ Eng. The ability to search and extract structural, graphical formulas. Library of 240,000 spectra. The ability to isolate individual components from overlapping peaks. In addition to spectra and compounds, the library contains the element name, formula, molecule structure, molecular weight, CAS number, analysis conditions, synonyms, and estimated or measured retention readings. The NIST EI library contains: drugs, metabolites and poisons, pesticides and fungicides, organic substances present in soil, water and air, amino acids, di- and tripeptides, common sample pollutants, common analytical derivatives, etc. Ethernet interface, remote access function implemented Touch screen Display of parameters and monitoring of system status no Built -in power supply Allows you to turn off the detector in normal mode if there is no power supply violation

It is used to determine hydrogen, oxygen, CO and combustible hydrocarbon gases, and its sensitivity to these compounds is higher than the sensitivity of an accident. The most widespread TCD was obtained for the analysis of hydrogen and oxygen, tk. its sensitivity to them is almost an order of magnitude higher than that of an accident. The principle of operation is based on fixing the thermal effect of catalytic combustion of the sample on the surface of the platinum filament. Technical characteristic: 1.8*10`10 g/ml of hydrogen