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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.

Technical specifications: Limit of detection of the control substance (phenol) in water, mg/dm3, no more 0,005 Measurement range of the mass concentration of the control substance (phenol) in water, mg/dm3 from 0.01 to 25 Measurement range of the directional transmission coefficient, % from 5 to 100 Limits of permissible absolute error of measurements of the directional transmission coefficient, % ± 2 Warm-up time, min, no more than 30 Continuous operation time, h, at least 8 Overall dimensions, mm, no more than 305x320x110 Weight, kg, no more than 6.5 AC power supply: - AC power supply voltage, V - frequency, Hz (220 ±22) (50 ±1) Power consumption, In × A, no more than 36 Time to failure, h, not less than 2500

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

Technical characteristics: NIP, G150 Discreteness, g0,001 Calibration,self-calibration The size of the scale bowl / platform, mm116 The smallest weighing limit, g0.02 The price of the verification scale division, mg10 The limits of the permissible error during the initial verification, mgot 0.02g to 50 g incl. ±5; sv. 50g to 150g incl. ±10 in accordance with GOST OIML R 76-1-2011 Accuracy class according to GOST OIML R 76-1-2011II is high The adjustment weight is built-in The time of setting the readings, s, no more than ~3 7 years warranty

The plasmatron is designed for direct atomic emission spectral analysis of powder samples. The excitation of atoms occurs in a DC argon arc plasma. Weak matrix effects and low detection limits make it possible to use this excitation source for the analysis of various samples, both with mineral and organic matrix.

The analyzer allows you to determine the content of sulfur and nitrogen in oil and petroleum products (diesel fuel, gasoline, kerosene, gas oil and any distillate petroleum products), hydrocarbon gas, liquefied petroleum gas (LPG), natural gas, liquefied natural gas (LNG), chemical synthesis products, biological materials by ultraviolet fluorescence and chemiluminescence. The analyzer is a proprietary development of NPO "SPEKTRON". The device is manufactured in St. Petersburg mainly from domestic components. There is a conclusion of the Ministry of Industry and Trade on the production of products in the territory of the Russian Federation. The analyzer is designed to determine: - mass fraction of sulfur in accordance with GOST ISO 20846-2016, GOST 34712-2021, GOST R 56866-2016, GOST 34237-2017, ASTM D5453-19, ASTM D6667-21, ASTM D7551-15, ISO 20729-17 ; - the mass fraction of nitrogen in accordance with ASTM D4629-17. A wide range of concentrations: from ultra-low to high. Modular principle: Each detector is a separate module. The device is equipped individually for each specific task. The possibility of simultaneous determination of sulfur and nitrogen in the analysis process. The principle of operation of the analyzer is to burn the test sample in an oxygen-enriched atmosphere or air at a temperature of 1050 ° C. The sulfur dioxide (SO2) and nitrogen oxide (NO) formed during combustion are transferred by carrier gas to the detection units with preliminary removal of water vapor, on the desiccant, and soot, on the filter. Determination of sulfur is carried out by ultraviolet fluorescence. Determination of nitrogen by chemiluminescence.

The characteristics of the device are similar to the GVCH-12M1 model. The difference is the generator capacity of 16 liters /hour. Technical specifications Purity of hydrogen in terms of dry gas is about 99.9999% The concentration of water vapor at 20 ° C and 1 atm is not 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 16 l/h The time of setting the operating mode, with the output turned off is no more than 30 min In the performance stabilization mode: The range of the specified hydrogen performance is from 0 to 16 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 than 0.025 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 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 installation is designed to excite atomic emission spectra of powder samples in an electric arc by the spillage-injection method. It provides high performance of routine analyses, has a low consumption of graphite electrodes and is used in conjunction with any spectral devices – "Grand", STE-1, DFS-458, MFS-8, PGS-2, etc.

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

Vacuum spectrometers are designed for rapid analysis of alloys based on iron, copper, aluminum and other metals in factory and research laboratories, including the determination of elements having analytical lines in the field of vacuum ultraviolet (VUV) (for example, S, P and C in steels).

Technical specifications: Output of results to digital display board, RS485, RS232; current loop 4-20 mA (0-20) mA The pressure in the flow is 0.1-10 atm. The range of detectable concentrations is 20-200 g/l Version B4, P1, N1 according to GOST 12997-84 Category of climatic performance UHL4 according to GOST 15150-69 Relative humidity at + 25 °C 80 % Display modes NORM, ALARM, LIMIT The temperature of the analyzed flow is from +0.5 to +25 °C Ambient temperature from +5 to +35 °C Atmospheric pressure 87-107 kPa The warranty period of operation is 1 year Average service life of at least 3 years Dimensions - electronic block - optical unit no more than 300x400x150 mm no more than 120x90x90 mm Weight - electronic block - optical unit no more than 10 kg not more than 2 kg Power supply 187-242 V, 50 ± 1 Hz, from an autonomous source, 12V Power consumption 100 W

The spectrometer is designed to perform quantitative and qualitative spectral analysis of various substances and materials (powders, metals, solutions) in factory and research laboratories. The spectrometer is compact due to the vertical arrangement of the Paschen-Runge optical system. It consists of two MAES analyzers with 10 lines of photodiodes installed on a circle with a radius of 520 mm, a non-classical concave diffraction grating, a special table with a built-in computer and a spectrum excitation source.