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The NV-800 SR is a large specialized laboratory table with a damping concrete slab on a sand cushion. It is designed to accommodate sieves and other devices that vibrate strongly during operation. Dimensions when sssembled: 860×860×750 mm. The table has a reinforced metal frame. The main countertop has a built-in drawer open from above, which contains a sand cushion. It is closed with a heavy concrete slab, which is attached to a second, smaller countertop. The sand cushion and the concrete base of the second countertop provide good protection against vibrations. The size of the anti-vibration countertop: 660×660 mm. Like the main countertop, it is made of chipboard, and visually they do not differ from each other. The metal frame is painted with white powder paint. The side laminated panels (chipboard with a thickness of 16 mm) are edged with a durable PVC edge with a thickness of 2 mm, which increases their impact resistance and mechanical strength. The legs of the table are adjustable in height within two centimeters, allowing you to place it even on a rather uneven floor.

The device is equipped with an automatic regeneration system of fine filters, which reduces the maintenance of the device to a minimum. In terms of the totality of technical characteristics and ease of operation, it has no equal among similar laboratory hydrogen generators. The hydrogen capacity is 12 liters/hour (200 ml/min). Technical specifications Purity of hydrogen in terms of dry gas is about 99.9999% Concentration of water vapor at 20OC and 1 atm is not more than 5ppm Total hydrogen capacity, reduced to normal conditions is not less than 12 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 ± 0.02 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 0.02 l/hour Water consumption is 1.6 g/l of hydrogen The average life of the replaceable cartridge of the deionization filter (at maximum performance and single-shift operation) is not less than 1 year Average power consumption: in stationary mode is no more than 180 VA maximum (at startup) is no more than 220 VA Overall dimensions of the generator, (width x depth x height) is 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 220 V(+10 -15)% and frequency 50 +1 Hz The generator for electrical safety meets the requirements of Class 1, type H according to GOST 12.2.025-76

Interleukin 2 is a cytokine that has pleiotropic properties and regulates several functional responses of target cells. It induces T cell proliferation (acting as a growth factor) and effector T cell synthesis of cytokines, thus providing an effector response. IL-2 is also a key factor in the development, expansion and maintenance of regulatory T cells, which plays an important role in balancing and regulating the immune response and preventing autoimmune diseases. Interleukin 2 is also capable of activating a number of other cells (B-lymphocytes, NK cells, neutrophils), triggering the processes of autivation and expression of receptor genes in them, the synthesis of effector molecules, and phosphorylation pathways for many intracellular proteins.

The digital contact thermometer TK-5.11S is designed to measure the temperature of various materials, relative humidity by direct contact of the probe with the measuring object. The thermometer TK-5.11S is a two-channel device that provides for the operation of two measuring probes simultaneously. The contact thermometer consists of an electronic unit and replaceable probes. Thermoelectric converters (TP) with NSH according to GOST R 8.585 are used as thermosensitive elements in the probes . Capacitive humidity sensors are used as a measuring element in relative humidity probes.

The calibrator is capable of operating both independently and as part of automated measuring systems with interfaces such as RS-232 and ETHERNET. Technical specifications Ranges of reproduction of quantities: - constant electrical voltage from 500 MV to 1000 V - alternating electric voltage in the frequency range from 40 Hz to 2.5 kHz from 1 mV to 1000 V - the power of direct electric current from 10 µA to 50 A - the power of alternating electric current in the frequency range from 40 Hz to 2.5 kHz from 100 µA to 50 A - frequency of alternating electric voltage from 40 Hz to 2.5 kHz Errors in reproducing quantities: - constant electric voltage ± (0.02 – 2.4)% - alternating electric voltage in the frequency range from 40 Hz to 2.5 kHz ± (0.03 – 2.1)% - constant electric current ± (0.03 – 0.25)% - alternating electric current in the frequency range from 40 Hz to 2.5 kHz ± (0.04 -0.25)% - frequency of alternating electric voltage ± 0.02% The value of the phase shift between voltage and current with simultaneous ignition ± 2 ° General characteristics: Operating temperature range from 5 to 40 °C AC power supply 220 V, 50 Hz Power consumption, no more than 1000 VA Overall dimensions, mm 455x198x463 Weight, not more than 20 kg

Specialized vacuum electric furnace for high-temperature soldering of large-sized products

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

Basic properties: Wide frequency range; Sufficiently large output power; High level of suppression of side harmonics of the input signal; Low value of phase noise; Relatively simple technical solutions: - synchronization and frequency stabilization, - stabilization and adjustment of the output power level, - implementation of amplitude and frequency modulation modes; Do not require external bias diodes. Operating conditions: Operating temperature range from minus 10 to 50 ° C; The relative humidity of the air is up to 98% at a temperature of 25 ° C. Technical characteristics Input/output frequency range, GHz 12,93-18,75 / 25,86-37,5 Losses (max.), dB 13 Input power level, dBm 15-21 Unevenness of output power (Rvh. = 20 dBm), dB ± 1.5 The level of parasitic harmonics of the input signal at the output (min.), dBn 20 Output VSWR (max.) 2.0 Connector type: • Input Coax. 3.5/1.5 mm (socket) • Output Waveguide 7.2x3.4 mm Overall dimensions, mm 29x24x24 Weight, g 60