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Technical specifications: Operating spectral range, nm from 190 to 360 Limits of permissible absolute error of wavelength setting, nm ± 5 Detection limit of anthracene (wavelength 252 nm), ng/cm3, no more than 1 The limit of the permissible value of the relative mean square deviation of the output signal (n =5), % of the retention time over the peak area of 1.5 2 Limits of the permissible value of the relative change in the output signal (peak area) for 4 hours of continuous operation, % ± 5 Overall dimensions (LxWxH), mm, no more: 270x420x190 Weight, kg, not more than 9.5 Power consumption, V· A, not more than 50

Variants of execution: - silica gel with grafted octadecyl groups (C18, RP, ODS) - for the variant of reversed-phase HPLC (OF HPLC); - unmodified silica gel (SIL) – for normal-phase HPLC (NF HPLC).

It is used for safe drip dosing of acids. It has a slot for a sealed connection with a container with acid. Types:10-19/26

Overall dimensions: 550x230x350 mm Weight (without computer): ~17 kg Power consumption: up to 200 watts Warranty service : 1 year   Detector Two-beam spectrophotometer Spectral range – 190-360 nm Simultaneous detection at 1-8 wavelengths Cell volume – 1.2 µl Noise <0.0001 E.O.P. at 250 nm Drift <0.00005 E.O.P./hour at 250 nm Column Ø2x75 mm stainless steel The efficiency of the column is up to 6000 theoretical plates Thermostat Solid-state electric Set temperature from 35 to 90°C The discreteness of the temperature setting is 1 °C Temperature control error ±0.3°C      Pump Two-pronged, gradient The feed rate is from 5 to 1000 µl/min, the maximum pressure is 70 atm . The gradient is formed from 1 to 20 linear sections Automatic doser Automatic, programmable Number of test tubes – 46 The number of analyses in the series is from 1 to 200 The dosed volume is from 1 to 99 µl Test tubes made of glass with a volume of 200 µl Polyethylene tube stoppers Software OS: Windows® XP/7/10 Milichrome A-02™, Multichrome™, Alphachrome, Alphaspectrum

The metering valve for the analysis of liquefied gas (KDSG) is designed for the introduction of liquefied gas or other liquid under excessive pressure into the evaporator of the chromatograph. KDSG is a 4-way crane, in which a dose of a certain volume is installed. The tap is installed on the evaporator of the chromatograph. A dose of any volume can be installed on the tap. Dose change can be performed by the operator. The amount of the dose volume is indicated on the tag. Technical specifications The dose volume is from 0.25 to 4.0 µl (at the request of the consumer, the dose volume can be increased up to 10 µl). The tap temperature is no more than 150 °C. The pressure in the crane line is not more than 0.48 MPa. The angle of rotation of the crane handle is 90 °C.

The dispenser "DAZH 4000" is designed for automatic insertion of liquid samples into the evaporator of the gas chromatograph, provides: control from the software, setting variable parameters of algorithms for washing and sample entry, storing the operating parameters of the dispenser in the method. Technical characteristics: The number of vials in the carousel, pcs up to 30 The volume of installed vials, ml 0.1-2ml Number of injections from one vial 1-99 Replaceable syringes in volume, ml 10, 100, 250, 500 The volume of the injected sample, ml : from 0.01 to 500 The discreteness of setting the sample volume, µl: from 0.01 to 1 Sampling and insertion rate, µl/s: from 0.01 to 5000 The speed of needle insertion into the evaporator, discret 3 Immersion depth in the vial and evaporator, variable up to the length of the syringe needle, mm 1 – 99 The discreteness of the dive depth setting, mm 0,1 The number of pumping during sampling 0-15 Number of solvent washes 0-15 Needle exposure time in the evaporator, sec 0-99 The discreteness of setting the needle shutter speed, sec 1,0 Sample input modes Simple insertion, Sandwich, Solvent sandwich, Sandwich with internal standard Flushing mode From the vial Supply voltage, V (frequency, Hz) 220 (50) Power consumption, W 154 Weight, kg, no more 2,9 Overall dimensions, mm 175x270x420 Communication with the computer Ethernet

The metering valve for the introduction of gas samples is designed for the introduction of gas under excessive pressure into the chromatograph. Cranes differ in the number of moves (4, 6, 8, 10, 12) and have two provisions "Selection" — "Analysis". In addition to dosing, cranes can be used to switch chromatographic columns, elements of gas circuits, etc. The tap can be installed either on the side panel of the chromatograph, or directly into the analytical module instead of, or together with the evaporator of the chromatograph, while it is used as a back-purge tap or for hot sample entry. Additionally, the tap for hot entry can be equipped with heated pipelines. technical specifications The dose volume is from 0.25 to 5.0 ml (at the request of the consumer, the dose volume can be increased to 10 ml and reduced to 0.1 ml). The maximum temperature of the tap is no more than 160 °C. The pressure in the crane line is not more than 0.48 MPa. The angle of rotation of the crane handle — depending on the number of strokes.

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

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

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

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 2.0 l/min Outlet air pressure is 355 ± 5% kPa (3.5 ati) Output pressure stability at constant flow rate is not worse than ± 10 kPa The stability of the output pressure when the flow rate changes from 0.3 to the maximum value is not worse than ± 10 kPa Output concentration of hydrocarbons is not more than 0.1 ppm Water vapor concentration at 20°C and 100 kPa is no more than 10 ppm Ready time after switching on is no more than 30 min Power consumption is not more than 200 VA Overall dimensions of the generator (width x depth x height) are not more than 230x425x510 mm The mass of the generator is not more than 18 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

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