baber/WOPTO huggingface dataset:
Patent DE-19733832-C1 (DE)
Title: Stacking support for sheets in printer
Inventor: GEBEL JENS
IPC: B65H31/38
Filed: 1997-08-05
Granted: 1999-01-21
Abstract: The sheet stack (3) is positioned in a frame with inwardly rotating upper rollers (9,10) having their axes parallel to the opposing sheet edges. The rollers have respective drives (11,12) and can be driven at independent speeds.  The rollers can have gripping outer surfaces such as bristles with the tips defining the outer surfaces. The rollers can be made from modular sectional rollers which can be releasably connected together. The spacing between the rollers can be selected to suit the sheet format.
Patent DE-19740401-C1 (DE)
Title: Process breaks down industrial particulate or gaseous wastes in foam
Inventor: SCHMACK PETER DR
IPC: B01D47/04
Filed: 1997-09-09
Granted: 1999-05-20
Abstract: A process and assembly oxidize pollutants and other organic substances in gases, fluid and matrices of suspended solids especially during the oxidative use of electron beam processes.  The substance that is to be treated is surrendered as a solution, a suspension, or gas, into a body of foam having fine bubbles and liquid, into which a liquid bearing an oxidizing agent has been sprayed. The ratio of liquid to gas is in the range from 3 to 1,000 m<3> and the foam is from 1 to 50 cm thick. The pollutants held in the foam are continually subjected to electron beam radiation at an energy level of between 0.05 and 15 MeV. An oxidizing agent is introduced to the foam while the foam is subjected to the radiation beam. Each electron beam passes through a succession of many bubbles and the enclosed gas, especially oxygen, generates ozone which is immediately and finely distributed throughout the foam. The substance in question is consumed by ozone, and not by other oxidizing substances or other organic or inorganic substances whose removal is required. A suitable assembly consists of:  (I) a reaction chamber (1) (II) with a jet (2)  (III) and with a fluid inlet pipe (3), (IV) a gas inlet (5), (V) a drain (4) to a droplet separator (6), (VI) an electron beam emitter (7) directed at the reaction zone (15),  (VII) pumps (8),  (VIII) blowers (9), (IX) dosing assembly (10) (X) and regulator (11).
Patent DE-19752051-C1 (DE)
Title: Producing dimensionally accurate components with nitrided or nitrocarburized surface layers, and resultant component
Inventor: LIEDTKE DIETER
IPC: C23C8/20
Filed: 1997-11-25
Granted: 1999-11-25
Abstract: The finished components are hardened and subsequently tempered at temperatures of only 200-300  deg  C, contrary to the usual practice. The hardened and tempered components are brought to the required dimensions by further machining, and are then subjected to nitriding or nitrocarburizing.
Patent DE-19801086-C1 (DE)
Title: Aqueous bleaching agent in microemulsion form
Inventor: PI SUBIRANA RAFAEL DR
IPC: C09K23/56
Filed: 1998-01-14
Granted: 1998-12-17
Abstract: The invention relates to novel aqueous bleaching agents in the form of a microemulsion, containing a) hydrogen peroxide and b) a ternary emulsifier mixture consisting of b1) esterquats, b2) alkyl- and/or alkenyl oligoglycosides and b3) alkyl benzene sulphonates. These preparations are not only excellent bleaches and disinfectants but are also stable in storage, even if they contain over 20 wt.% hydrogen peroxide in relation to the non-aqueous part.
Patent DE-19815196-C1 (DE)
Title: Retaining eye for footwear
Inventor: WULF MARKUS
IPC: A43C7/08
Filed: 1998-04-04
Granted: 1999-05-12
Abstract: The eye (3) has two parallel bores (5) extending through it to receive the ends of the laces. The lace is elastic with a smaller diameter when extended and its normal diameter is greater than that of the bores. The laces are inserted when extended and released to lock the eye.
Patent DE-19827848-C1 (DE)
Title: Holder for vibrating quartz plate can even be used at high frequencies greater than 14 MHz, whereby damage to the quartz plate from additional mechanical loads is prevented
Inventor: PIEGENDORFER JOHANN
IPC: H03H9/05
Filed: 1998-06-23
Granted: 1999-11-25
Abstract: The holder has a base plate (2) in which two current conducting pins (6a, 6b) are fixed. in the form of two flat vanes bent outwards at the holder ends and formed into a holder seat (9a,9b) at their free ends.  The vanes have an aperture between the bent region and the seat with the formation of two bridges.  The bridges also have notches (11a, 11b) at the bent edges. An Independent claim is also included for a method of producing a holder.
Patent DE-19856974-C1 (DE)
Title: Verfahren und Vorrichtung zur Erfassung eines Hindernisses
Inventor: NASS THILO
IPC: G01S15/931
Filed: 1998-12-10
Granted: 2000-09-07
Abstract: Bei einer Vorrichtung zum Erfassen der Anwesenheit eines Hindernisses in der Nähe eines Objekts, mit wenigstens einem am Objekt lokalisierten Sender (S1, S2, S3, S4) zum Aussenden eines Signalimpulses, wenigstens einem Paar von am Objekt lokalisierten Empfängern (S1, S2, S3, S4) zum Auffangen eines von zurückgeworfenen Echos des Signalimpulses und einer Auswerteschaltung zum Messen von Laufzeiten der aufgefangenen Echos und zum Feststellen der Anwesenheit eines Hindernisses in einem ersten Umgebungsbereich (3) des Objekts durch Vergleichen der Laufzeiten mit einem ersten und einem zweiten Schwellwert ist vorgesehen, daß die Auswerteschaltung die Anwesenheit eines Hindernisses in einem zweiten Umgebungsbereich (8, 9) feststellt, wenn die Laufzeit zum ersten Empfänger kleiner als ein dritter Schwellwert ist, der größer als der erste Schwellwert gewählt ist, und gleichzeitig die Laufzeit zum zweiten Empfänger größer als ein vierter Schwellwert ist, der größer als der zweite Schwellwert ist.
Patent DE-19917633-C1 (DE)
Title: Propellant charge for shell projectiles or rockets has a core charge with a firing system and a surrounding compact charge with a separate time-delayed firing system to fire it in fractions with the core to accelerate the developed gas vol
Inventor: ZIMMERMANN GERD
IPC: F42B5/08
Filed: 1999-04-19
Granted: 2000-11-23
Abstract: The propellant charge (1), for a shell projectile or rocket, has a conventional core charge with a firing system (4). The core is contained within a compact charge (3) shrouding, with its own firing system (5) of electrical conductors (6,7) with a high electrical energy, with a controlled time delay after firing the core charge. During the combustion of the core charge, the surrounding compact charge is fired in fractions with a regular geometry. The fractions accelerate the gas vol. developed by the combustion of the core charge.
Patent DE-19917767-C1 (DE)
Title: Wickelträger zur Aufnahme von Garn
Inventor: POHLSCHEIDT GUENTER
IPC: B65H75/18
Filed: 1999-04-20
Granted: 2001-01-18
Abstract: Ein Wickelträger (1) zur Aufnahme von Garn weist einen rotationssymmetrischen Körper auf, dessen Außenfläche (2) eine das Garn tragende Oberfläche bildet. Des weiteren besitzt der Wickelträger (1) an einem Ende (7) einen axial vorstehenden Bund (8) sowie an einem gegenüberliegenden Ende (9) eine Aufnahme (11) für den Bund (8) eines koaxial angeordneten gleichen Wickelträgers (1). Des weiteren ist der Wickelträger an dem die Aufnahme (11) aufweisenden Ende (9) mit einem Zusatzbund (10) versehen, der radial zur Aufnahme (11) nach innen versetzt ist und in seinen Außenabmessungen den Innenabmessungen des an dem gegenüberliegenden Ende (7) befindlichen Bundes (8) entspricht. Um einen derartigen Wickelträger (1) im bespulten Zustand über parallel zueinander angeordnete Führungsschienen ablaufen lassen zu können, wird vorgeschlagen, einen Ablaufring (15) vorzusehen, der über den Zusatzbund (10) in die Aufnahme (11) einschiebbar und dadurch mit dem Wickelträger (1) verbindbar ist.
Patent DE-19943769-C1 (DE)
Title: Guide device for front edge of automobile folding sunroof panel has driven carriage and sliding plate coupled to pivoted lever for movement of sliding plate into retaining position in closed position of sunroof
Inventor: WINGEN BERNHARD
IPC: B60J7/06
Filed: 1999-09-13
Granted: 2001-02-01
Abstract: The guide device has a driven carriage (13) and an adjacent sliding plate (17) attached to the folding sunroof panel front edge, which are each displaced along a guide path (14,18) provided by a guide rail (11) along the side edge of the sunroof opening. A pivoted lever (20) is coupled to the driven carriage and the sliding plate for movement of the sliding plate into a lowered retaining position when the sunroof panel reaches its closed position, so that the sunroof panel front edge fits below the front edge of the roof opening.
Patent DE-19946743-C1 (DE)
Title: X-ray diagnosis unit comprises a screen for storing X-ray images, an X-ray source, a selection unit, a picture display, and a detector.
Inventor: HELL ERICH
IPC: A61B6/00
Filed: 1999-09-29
Granted: 2000-11-23
Abstract: An X-ray diagnosis unit comprises a screen (5) for storing X-ray images, a unit for producing bundles of X-rays, a selection unit, a detector (16) for light emitted from the storage screen, and a picture display. The screen is illuminated with a radiation source (15), and has a carrier (12) with a rectangular cross section opening (13). Air storage members are located on both sides of the opening, and the radiation source and detector are fixed to the carrier.
Patent RU-2062405-C1 (RU)
Title: Combustion chamber
Inventor: MAEV VLADIMIR A
IPC: F23R3/00
Filed: 1992-10-23
Granted: 1996-06-20
Abstract: FIELD: mechanical engineering for transport, power engineering and chemical industries; combustion chambers for gas- turbine engines. SUBSTANCE: deflectors are mounted at outlet of some part of interblade channels of annular swirler to deflect air leaving interblade channels and passed to combustion chamber center. Nozzles are installed on butt-end wall between annular swirler and two adjacent peripheral burners at certain angle to longitudinal axis of combustion chamber equal to 30-45 deg.; flame tube mounts nozzles inclined to longitudinal axis of combustion chamber through 45-90 deg. Combustion chamber affords 3-5 times reduction in nitrogen oxide emissions. EFFECT: improved reliability of gas-turbine engine; reduced emission of nitrogen oxides. 4 dwg
Patent RU-2048122-C1 (RU)
Title: Method for preparation of soluble wheat-base product
Inventor: IUNIKHINA VERA S
IPC: A23L7/10
Filed: 1992-11-26
Granted: 1995-11-20
Abstract: FIELD: food industry. SUBSTANCE: method involves roasting embryonic wheat flakes at 110-120 C, crushing them into particles whose size is adjusted by the through product of a sieve with mesh size of 250 microns and the tailings of a sieve with 160-micron mesh, extracting with water at 25-30 C for 5-10 min and drying the extract at 30-40 C. EFFECT: higher efficiency. 1 tbl
Patent RU-2091674-C1 (RU)
Title: Automatic gas water heater with heating system served by this heater
Inventor: FUNDATOR YULIJ V
IPC: F24H9/20
Filed: 1992-12-03
Granted: 1997-09-27
Abstract: FIELD: automatic gas water heaters for heating systems of small buildings. SUBSTANCE: water heater is provided with automatic protection against freezing of heating system which includes temperature regulator whose temperature sensor is in thermal contact with heating system and electromagnetic CLOSED/OPEN valve connected in drain line of heating system. EFFECT: enhanced reliability. 1 dwg
Patent RU-2111993-C1 (RU)
Title: Dye base and composition, method of enhancement of biocide effectiveness of dye base and composition
Inventor: MJURREHJ A RUDZHERO
IPC: C09D5/16
Filed: 1991-03-28
Granted: 1998-05-27
Abstract: FIELD: dyes. SUBSTANCE: composition is used for marine and domestic dyes. Composition does not contain practically tin, lead and vanadium. Composition has biocide, a mixture of zinc pyrithione salt and cuprous (I) oxide or copper thiocyanate. EFFECT: improved quality of dye. 2 cl, 1 tbl
Patent RU-2114430-C1 (RU)
Title: Method to detect and treat pulmonary cancer
Inventor: DIN A KOUL
IPC: G01N33/50
Filed: 1991-06-17
Granted: 1998-06-27
Abstract: FIELD: medicine, oncology, pulmonology. SUBSTANCE: method deals with investigation of biological material for the presence of fluorescenting cells, at the same time it is necessary to obtain unicellular suspension of pulmonary cells followed by its treatment with 5,10,15,20 - tetrakis/4 - carboxyphenyl porphine for a period of time sufficient to catch its considerable quantity by malignant pulmonary cells, then treated cellular suspension should be kept under ultraviolet irradiation to detect malignant pulmonary cells according to the presence of fluorescenting cells. To treat pulmonary cancer it is necessary to introduce radioactive isotope and porphyrine derivative into a body, namely, the complex of:  67 CuCu 5,10,15,20 - tetrakis/4 - carboxyphenyl porphine. EFFECT: higher efficiency to obtain a highly contrast method for rapid detection of available malignant cells in vitro and selective irradiation of small obscure malignant tumor areas in patient's lungs. 8 cl, 13 cl, 1 dwg
Patent RU-2072989-C1 (RU)
Title: Derivatives of methylenehydroxyindole, method of their synthesis and pharmaceutical composition
Inventor: BUZZETTI FRANCO
IPC: A61K31/40
Filed: 1992-07-10
Granted: 1997-02-10
Abstract: The invention provides new methylen-indole derivatives of formula (I)   <CHEM>  wherein  R is a group <CHEM>  in which   R4   is hydrogen, hydroxy, C1-C6 alkoxy, C2-C6 alkanoyloxy, carboxy, nitro or NHR7, wherein R7 is hydrogen or C1-C6 alkyl; R5   is hydrogen, C1-C6 alkyl or halogen; and R6   is hydrogen or C1-C6 alkyl; n   is zero, 1 or 2; R1   is hydrogen, C1-C6 alkyl or C2-C6 alkanoyl; R2   is hydrogen, C1-C6 alkyl, halogen, cyano, carboxyl, nitro or -NHR7 in which R7 is as defined above; R3   is hydrogen, C1-C6 alkyl or C2-C6 alkanoyl; and the pharmaceutically acceptable salts thereof; and wherein, when,at the same time, R2 is hydrogen, C1-C6 alkyl, halogen or cyano and R3 is hydrogen, R1 and n being as defined above, then at least one of R4, R5 and R6 is other than hydrogen, which are useful as tyrosine kinase inhibitors.
Patent RU-2077723-C1 (RU)
Inventor: DENISOVA LYUDMILA YA
IPC: G01N33/52
Filed: 1993-02-11
Granted: 1997-04-20
Abstract: Использование: аналитическая биохимия, биотехнология. Сущность изобретения: липополисахариды (ЛПС) определяют путем их окисления перйодатом с последующим биотинилированием, иммобилизацией модифицированных ЛПС на нитроцеллюлозной мембране и проявлением конъюгатом стрептавидин - щелочная фосфатаза в присутствии субстратов. Метод позволяет обнаруживать ЛПС в концентрации 1 нг/мл при использовании в качестве субстрата 5-броминдолил фосфата и нитро-голубого тетразолия в качестве хромогена и 0,1 нг/мл при использовании в качестве субстрата 3-(2-спироадамантан-4-метокси-(3"-фосфорилокси)-фенил-1,2- диоксетандиизопропил-этиламмонийной соли. 4 ил.
Patent RU-2074911-C1 (RU)
Title: Woven material
Inventor: RAJKOV RUDOLF V
IPC: D03D15/267
Filed: 1993-03-22
Granted: 1997-03-10
Abstract: FIELD: binder-impregnated woven fabric used in roofing materials. SUBSTANCE: woven material has core threads with linear density of 68-280 tex, with diameter ratio of core threads being within the range of 1 : (2-4), respectively. Core threads are equally spaced over fabric background to form longitudinal strips of 5-mm width. Strip density exceeds that of warp by 2 times. Density of core threads in edge portions exceeds that of background by 2-3 times. Portion with density 1.5-1.6 times exceeding that of background is adjoining to one or both edge portions. Such embodiment allows wedge-shaped profile of fabric edge to be obtained. EFFECT: increased efficiency, improved operating characteristics by reduced material consumption and stable form. 5 cl
Patent RU-2061453-C1 (RU)
Inventor: ROTANOV ANATOLIJ N
IPC: A61H1/00
Filed: 1993-03-30
Granted: 1996-06-10
Abstract: FIELD: medical engineering. SUBSTANCE: device has frame 1 with cross-bars 2 and 3 providing for structure stiffness. Hook-like plates are fixed on frame 1 by means of hinged joints 6 and spaced corresponding to length of locking members 5, bearing plate 7, mounted on frame 1 by means of hinged joints 8 and provided with rest 9 engageable with locking members 5 to set bearing plate 7 in operating position at a required angle. EFFECT: enhanced effectiveness in unloading vertebral column. 2 dwg
Patent RU-2019718-C1 (RU)
Title: Thermostat for cooling system of internal combustion engine
Inventor: DMITRIEV VADIM B
IPC: F01P7/16
Filed: 1993-04-01
Granted: 1994-09-15
Abstract: FIELD: engine engineering. SUBSTANCE: thermostat has case 1, inlet branch pipes 2,3, outlet branch pipe 4 and temperature control unit 5. Unit 5 has bushing 6 fixed in case 1, rotatable gate 7 positioned over periphery of bushing 6 and coaxially to it and the inlet branch pipes, spiral thermo-sensitive spring 8 made of a material having form memory ( e.g. manganese-copper alloy), and pins 9,10. Spring 8 is Arhimedean spiral and secured to gate 7 via screw 11 by its inner end. Bushing 6 has inner baffle 12, that separates spaces of inlet branch pipes 2,3, and rectangular openings 13,14 arranged concentrically. Openings provided in inlet space of branch pipe 2 has angular shift with respect to openings arranged in inlet space of branch pipe 3. Gate 7 has rectangular openings arranged concentrically. Openings adjacent to inlet spaces of branch pipes 2,3 are coaxially alined. EFFECT: enhanced reliability. 5 cl, 2 dwg
Patent RU-2021213-C1 (RU)
Title: Ozonizing device for liquids
Inventor: SHAGIAKHMETOV YURIJ S
IPC: C01B13/10
Filed: 1993-05-12
Granted: 1994-10-15
Abstract: FIELD: food industry. SUBSTANCE: device for ozonization of liquids has tandem-connected devices for preparation of atmospheric air for ozonization, ozone generator and contact chambers. Ozone generator is hermetically sealed housing with air inlet connection, at least one cylindrical reaction chamber placed inside housing with longitudinally cylindrical ultraviolet radiation source arranged in reaction chamber and tubular header-mixer connected with chamber. Chamber has mirror inner surface. Made in walls of chamber and header are air inlet holes and one slot to connect chamber and header through adapter. Chamber has reflectors arranged inside with clearance opposite to each inlet hole. Header is connected with contact chambers through branches. EFFECT: enlarged operating capabilities. 5 cl, 4 dwg
Patent RU-2064005-C1 (RU)
Title: Washing fuel additive
Inventor: BAJRES SERGEJ VLADIMIROVICH
IPC: C10L1/185
Filed: 1993-06-18
Granted: 1996-07-20
Abstract: FIELD: chemistry. SUBSTANCE: fuel additive contains, %: oxyethylated alkylphenol, 5.0-40.0; product of oleic acid reaction, 40.0-70.0; and up to 100% of alcohol of R-OH formula or R - OCH 2 CH 2 OH,, where R - alkyl C 3 -C 12 , R'- alkyl C 1 -C 4 , or phenyl. EFFECT: higher efficiency. 4 tbl
Patent RU-2067309-C1 (RU)
Inventor: SAVOSKIN VLADIMIR I
IPC: G02B15/12
Filed: 1993-07-30
Granted: 1996-09-27
Abstract: FIELD: TV and cine optics. SUBSTANCE: afocal attachment is composed of two components. First component is made in the form of bioconvex lens, second component incorporates positive meniscus object with concavity and bioconcave lens. EFFECT: improved optical characteristics. 4 dwg
Patent RU-2044071-C1 (RU)
Inventor: GRIN VLADIMIR ALEKSANDROVICH
IPC: C21D9/08
Filed: 1993-09-07
Granted: 1995-09-20
Abstract: FIELD: ferrous metallurgy. SUBSTANCE: method for manufacture of long rolled products of round cross-section includes hot rolling and accelerated cooling of grinding rods during their rotation and translational motion. Cooling of rods with diameters of 80, 100 and 120 mm from rolling heating temperature is effected by interrupted hardening in water for 60-75,60-80 and 110-140 s, respectively. EFFECT: higher complex of mechanical properties by rod cross-section. 1 tbl
Patent RU-2051193-C1 (RU)
Inventor: ANDREEV YURIJ V
IPC: C22B1/02
Filed: 1993-10-06
Granted: 1995-12-27
Abstract: Изобретение относится к способу извлечения рения и осмия в газовую фазу из свинцовистых ренийсодержащих пылей и сернокислотных шламов медного производства, включающему грануляцию исходного сырья и его нагрев. Сущность: нагрев производят до 800 900°С с пропусканием газов через слой гранулированного сырья. 1 табл.
Patent RU-2063188-C1 (RU)
Title: Device for introduction and removal of intraosseous rods
Inventor: EPISHIN NIKOLAJ MIKHAJLOVICH
IPC: A61B17/92
Filed: 1993-10-06
Granted: 1996-07-10
Abstract: FIELD: medical equipment, intended for introduction and removal of intraosseous rods. SUBSTANCE: the device uses a cylindrical casing and a striker installed in it for movement; one end of the casing has a stop, and the other has a threaded hole. The device is furnished with an adapter to the intraosseous rod made in the form of a rod with a flange, whose diameter exceeds the casing diameter, one end has a threaded end-piece for placing in the threaded hole of the casing, and the other has a threaded recess for the tip of the intraosseous rod. The casing has a duct for the wire and windows, whose axes are perpendicular to the casing axis. EFFECT: enhanced convenience in use. 10 dwg
Patent RU-2101058-C1 (RU)
Title: Linear fire extinguisher
IPC: A62C35/00
Filed: 1993-10-27
Granted: 1998-01-10
Abstract: FIELD: fire-fighting equipment. SUBSTANCE: the offered fire extinguisher has tubular body with fire-extinguishing agent and power drive for starting the device. Body is made in form of collector with spraying nozzles. Fire-extinguishing agent is used in form of charge of aerosol fuel and power drive ignites the charge over its entire length or on separate sections of collector length. Collector cross-section is shaped and has ejector, deflector or jet coolant. Collector cross-section may be made with variable radius of curvature. Collector may be separated into two hollows, one of which may accommodate aerosol fuel, and the other is communicated with nozzles. Hollows may be formed by concentric surfaces and nozzles may be installed in connectors of hollow walls. Connectors may be installed over the length of collector by helical line. Surface of internal hollow may be made of low-melting material, for instance, aerosol fuel. Collector may be made of flexible material, for instance, reinforced hose or from aerosol fuel. Power drive is located outside the collector and comes in contact with charge through nozzle openings or places of opening of outflow surfaces mounted in collector and spaced over collector length with different intervals. Power drive may also be made in form of electric drive with sections made of material with high electric resistance and may be coated with initiating compound. Power drive may be made in form of quick-burning safety fuse with the preset ignition temperature and brought out to outside through nozzles. EFFECT: higher efficiency. 18 cl, 7 dwg
Patent RU-2069169-C1 (RU)
Title: Способ получения озона
Inventor: DEMIRCHYAN KAMO S
IPC: C01B13/11
Filed: 1993-11-26
Granted: 1996-11-20
Abstract: Изобретение относится к способам получения озона. В способе получения озона, заключающемся в подаче воздуха на вход межэлектродного пространства и воздействии на него электрическим импульсным разрядом, 25-30% от объема озонированного воздуха с выхода межэлектродного пространства направляют на его вход по дополнительному каналу. 1 ил.
Patent RU-2089912-C1 (RU)
Inventor: PLAKSIN DMITRIJ YU
IPC: G01N33/58
Filed: 1993-12-30
Granted: 1997-09-10
Abstract: FIELD: biotechnology, immunology, biochemistry. SUBSTANCE: method involves one-stage determination of analyte bound with conjugate. The latter has analyte-stereospecific compound (anti-analyte) bound covalently with suspension-like water-insoluble dyes (particle size is 50-350 nm). Carbon, formazanes, diformazanes and Sudans were used as dyes. Method involves direct visualization of analyte as color spots (dottes) or pattern on the solid phase surphase that were formed for a few seconds or minutes after conjugate addition. Invention can be used in biology, medicine and agriculture for making diagnostica for immunochemical, gene-hybridization and ligand-acceptor analysis and for rapid and simple testing. EFFECT: enhanced sensitivity, safety and stability of method and reagents. 3 cl