CS228799B1 - Mixing and adding equipment to spectrophotometers - Google Patents

Mixing and adding equipment to spectrophotometers Download PDF

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Publication number
CS228799B1
CS228799B1 CS832182A CS832182A CS228799B1 CS 228799 B1 CS228799 B1 CS 228799B1 CS 832182 A CS832182 A CS 832182A CS 832182 A CS832182 A CS 832182A CS 228799 B1 CS228799 B1 CS 228799B1
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Czechoslovakia
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mixing
spectrophotometers
spectrophotometric
sample
cap
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CS832182A
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Czech (cs)
Slovak (sk)
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Vladimir Ing Krempasky
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Vladimir Ing Krempasky
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Priority to CS832182A priority Critical patent/CS228799B1/en
Publication of CS228799B1 publication Critical patent/CS228799B1/en

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  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Measuring Cells (AREA)

Abstract

Miešacie a pridávacie zariadenie je určené pře spektrofotometrické meranie. Podstata zařiadenia spočívá v tom, že je vytvořené z inertného mieSadla, excentricky uloženého v spektrofotometrickej kývete, ktoré je pomocou hriadeTa spojené s regulovatelným elektromotorčekom, upevněným v uzévere otvoru v kryte kyvetového priestoru a z vymeAitelnej hadičky pre pridávanie přísady ktorá je vyvedená pomocou pripájacej časti zdroja tlaku cez uzávěr. Miešacie a pridávacie zariadenie k spektrofotometrom možno využiť v spektrofotometriekých laboratóriach vedeckovýskumných a zdravotnických organizácií.The mixing and adding device is intended for spectrophotometric measurements. The essence of the device is that it is made of an inert mixer, eccentrically placed in a spectrophotometric cuvette, which is connected by a shaft to an adjustable electric motor, mounted in the cap of the opening in the cover of the cuvette space and from a replaceable tube for adding the additive which is led out using the connecting part of the pressure source through the cap. The mixing and adding device for spectrophotometers can be used in spectrophotometric laboratories of scientific research and healthcare organizations.

Description

Vynález sa týká miešacieho a prldávacieho zariadenla k spektrofotometrem s prechodom dvoch světelných lúčov o rflznych vlnových dížkach cez analyzovaná vzorku.The invention relates to a mixing and dispensing apparatus for spectrophotometers with the passage of two light beams of different wavelengths through the analyzed sample.

Doteraz sa spektrofotometre dopíňajú niektorými zariadeniemi, ktoré značné rozširujú ioh použitie. Spektrofotometer možno doplnit aj zariadením na pridávanie létok do kyvety so vzorkou bez otvárania krytu kyvetového priestoru. Toto zariadenie pozostáva z krytu kyvetového priestoru vybaveného otvorom, ktorý je vytvořený presne nad kyvetou so vzorkou, do ktorého sa zasúva miešacie a pridávacie zariadenie. Pomocou prldávacieho zariadenia sa přidává k meranej vzorke látka tým spflsobom, že sa část zariadenia opakované ponoří do kyvety, v dSsledku čoho sa vzorka súčasne aj premiešava.Until now, spectrophotometers have been complemented with some devices that greatly extend their use. The spectrophotometer can also be supplemented with a device for adding drugs to the sample cell without opening the cell compartment cover. This device consists of a cuvette compartment cover provided with an opening which is formed exactly above the sample cuvette into which the mixing and addition device is inserted. Substance is added to the sample to be measured by means of a dispensing device by repeatedly immersing a portion of the device in the cuvette, thereby mixing the sample simultaneously.

Toto zariadenie je dflležité najma pre pracovnú činnost přístroje, avšak s určitým obmedzením jeho maximálneho využitia. Přitom je nevýhodou najma to, že počas přidávania látky treha alebo vypnúť detekčně a záznamové zariadenie, alebo vynechat hodnotenie pridóvania prídavnej látky. Najnovšie typy spektrofotometrov sú technicky rieěené tak, že cez analyzovaná vzorku v jednej spektrofotometrickej kývete prechádzajú dva světelné lúče o rflznych vlnových dížkach (dvojlúčovo-dvojvlnové spektrofotometre).This device is particularly important for the operation of the device, but with some limitations on its maximum use. The disadvantage here is that, during the addition of the substance, it shakes or switches off the detection and recording device, or omits the evaluation of the addition of the additive. The latest types of spectrophotometers are technically solved by passing two light rays of different wavelengths (two-beam-two-wave spectrophotometers) through the analyzed sample in one spectrophotometric nod.

Mierou změny analyzovanej veličiny v tomto usporiadaní je rozdiel absorbancií pri nasta vených vlnových dížkach. Rýchlosť tejto změny možno zistiť zo záznamu na zapisovači a jej absolútnu hodnotu na display alebo z kalibrácie záznamu. Uvedené spektrofotometre sú vybavené takým záznamovým zariadením, ktoré si zapamatá v sekundových intervaloch priebeh změny analyzovanej veličiny. Pri týchto prístrojoch sa mflže doba přidávania překrývat s dobou potřebnou na prebehnutie reakcie a teda jej priebeh nie je hodnotiteTný. Niekedy třeba přístroj používat aj na určovanie vlastností suspenzií buniek alebo suspenzií buňkových organel, ktoré majú snahu sedimentovat počas merania, čo spflsobuje nehomogénnost látky v analyzovanóm poli a znemožňuje objektivně a správné zhodnotenie merania.The measure of the change in the analyzed quantity in this arrangement is the difference in absorbance at the set wavelengths. The rate of this change can be ascertained from the recorder and its absolute value on the display or from the record calibration. Said spectrophotometers are equipped with a recording device which will remember the change of the analyzed quantity in one-second intervals. In these devices, the addition time may overlap with the time required for the reaction to proceed, and thus its course is not evaluable. Sometimes the instrument should also be used to determine the properties of cell suspensions or cell organelle suspensions that tend to sediment during the measurement, which causes inhomogeneity of the substance in the field being analyzed and makes it impossible to objectively and correctly evaluate the measurement.

Niektoré látky přitom interagujú s materiálom, z ktorého je vyhotovené zariadenie a tak nepriaznivo ovplyvňujú citlivý biologický materiál používaný pri experimentooh. Iné doplňkové zariadenla k spektrofotometrem, ktoré umožňujú sledovat reakcie od začiatku, nemiešajú vzorku počas merania a tým neumožňujú realizovat časovo néročnejšie experimenty pre sedimentéciu častíc. Nevýhodou je aj to, že při týchto zariadeniach nemožno opakovat pridávanie ďalšieho množstva látky bez prerušenia merania. Přitom počet uskutočnených meraní značné zni žuje aj potřebná doba čistenia pridávacíoh zariadení ód použitých létok.Some substances interact with the material from which the device is made and thus adversely affect the sensitive biological material used in experiments. Other complementary devices to spectrophotometers that allow for observation of reactions from the beginning, do not mix the sample during the measurement and thus do not allow for more time-consuming experiments for particle sedimentation. A disadvantage is also that in these devices it is not possible to repeat the addition of another amount of substance without interrupting the measurement. The number of measurements carried out also greatly reduces the required cleaning time of the feed devices from the used medicaments.

Uvedené nedostatky odstraňuje miešacie a pridávacie zariadenie k spektrofotometrom podl’a vynálezu, ktorého podstata spočívá v tom, že pozostáva z inertného miešadla, excentric ky uloženého v spektrofotometrickej kývete, ktoré je spojené pomocou hriadeTa s regulovatelným elektromotorčekom, upevněným v uzávere otvoru v kryte kyvetového priestoru a z vymeniteTnej hadičky na pridávanie přísad, ktorá je pomocou přípojky zdroja tlaku vyvedená cez uzávěr.The above mentioned drawbacks are eliminated by the mixing and adding device to the spectrophotometers according to the invention, which consists of an inert stirrer, eccentrically stored in a spectrophotometric rocker, connected by means of a shaft to a controllable electric motor, fixed in the opening of the opening in the cuvette compartment. and a replaceable additive hose that is routed through the cap through the pressure source connection.

Vynález miešacieho a prldávacieho zariadenia k spektrofotometrem umožňuje počas miešania skúšanej vzorky bez priameho kontaktu pridávacej časti s meranou vzorkou opakované, bez prerušenia merania, přidávat připadne měnit množstvo přidávanej látky a tým zvýšit produktivitu práce. Výměnou hadičky, cez ktorú sa přidávájú látky ku vzorke, možno v krátkom čase zabezpečit dokonalil čistotu zariadenia pre nasledujúce experimenty. Miešacie a pridávacie zariadenie je konstrukčně jednoduché a vyhotovená tak, že sa iba zasunie do otvoru v kryte kyvetového priestoru spektrofotometre.The invention of the mixing and dispensing device for the spectrophotometers allows repeated addition, without interruption of the measurement, to add or change the amount of the added substance during the mixing of the test sample without direct contact of the addition part with the measured sample and thus increase labor productivity. By replacing the tubing through which the substances are added to the sample, the cleanliness of the device for subsequent experiments can be ensured in a short time. The mixing and addition device is structurally simple and constructed so that it merely slips into the opening in the cell compartment cover of the spectrophotometer.

Schematicky je miešacie a .pridávacie zariadenie k spektrofotometrom znázorněné na pripojenom výkrese.Schematically, the mixing and addition device for the spectrophotometers is shown in the attached drawing.

Inertná miešadlo 2, ktoré je pomocou hriadeTa 8 spojené s regulovatelným elektromotorčekom 2 premiešava vzorku v spektrofotometrickej kývete £. Elektromotorček 2 j® upevněný v uzávere 6 otvoru £ v kryte £ kyvetového priestoru. V uzávere 6 je umiestnené přípojka £ zdroja tlaku, cez ktorú je vyvedené vrchná časť vymenitelnej hadičky £. Cez spodnú časť vyměnitelněj hadičky £, ktorá je nasměrovaná nad spektrofotometrickú kyvetu £, sa přidává látka k meranej vzorke.The inertial stirrer 2, which is connected via a shaft 8 to a controllable electric motor 2, mixes the sample in a spectrophotometric rocker 6. The electric motor 2 is mounted in the closure 6 of the opening 6 in the cover 6 of the cell compartment. In the closure 6 there is a pressure source connection 6 through which the top of the replaceable tube 6 is led. Substance is added to the sample to be measured through the lower part of the replaceable tube 6, which is directed above the spectrophotometric cell 6.

Přitom možno ako zdroj tlaku používat injekčnú striekačku připojenu pomocou přípojky £ zdroja tlaku k vymeniteTnej hadičke £. Excentrické uloženie inertného miešadla 2, tak, aby sa nepretínal světelný lúč prechédzajúci cez spektrofotometrickú kyvetu £ zabezpečuje kontinuálně miešanie počas trvania experimentu. To znamená, že nedochádza k sedimentécii suspendovaných častíc a analyzované pole je homogénne.In this case, a syringe connected via a pressure source connection 6 to a replaceable tube 6 can be used as the pressure source. The eccentric placement of the inert stirrer 2 so as not to intersect the light beam passing through the spectrophotometric cell 6 ensures continuous stirring throughout the duration of the experiment. This means that there is no sedimentation of the suspended particles and the field analyzed is homogeneous.

Pridávanie látok cez vymenitel’ná hadičku £ nad povrch suspenzie v spektrofotometrickej kývete £ neinterferuje s prechodom světelného lúča cez analyzované pole. Kontinuálnym miešaním sa přidávaná látka rýchlejšie rovnoměrně distribuuje v celom objeme vzorky. Zariadenie umožňuje lepšie využitie dvojlúčovo-dvojvlnových spektrofotometrov so záznamovým zariadením s pamatou, pretože neruší detekčně a záznamové zariadenia. Výměnou hadičky £, cez ktorá sa pridávajú látky k vzorke, možno v krátkom čase zabezpečit dokonalá čistotu zariadenia pre nasledujúce experimenty.Adding substances through the replaceable tube £ above the suspension surface in the spectrophotometric rocker £ does not interfere with the light beam passing through the field to be analyzed. By continuous mixing, the added substance is distributed evenly more rapidly throughout the sample volume. The device allows better use of dual-beam-two-wave spectrophotometers with a memory-recording device as it does not interfere with detection and recording devices. By replacing the tubing 8 through which the substances are added to the sample, perfect cleanliness of the device for subsequent experiments can be ensured in a short time.

Vynález miešacieho a pridávaciehó zariadenia k spektrofotometrom možno využit v spektrofotometru.The invention of the mixing and adding device for spectrophotometers can be used in a spectrophotometer.

Claims (1)

Miešacie a pridávacie zariadenie k spektrofotometrom vyznačujúce sa tým, že pozostáva z inertného miešadla (2) excentricky uloženého v spektrofotometrickej kývete (1), ktoré je spojené pomocou hriadela (8) s regulovatelným elektromotorčekom (7) upevněným v uzévere (6) otvoru (5) v kryte (4) kyvetového priestoru a z vymenitelnej hadičky (3) na pridévanie přísad, ktorá je pomocou pťípojky (9) zdroja tlaku vyvedená cez uzávěr (6).Mixing and addition apparatus for spectrophotometers, characterized in that it consists of an inert stirrer (2) eccentrically mounted in a spectrophotometric rocker (1), which is connected by means of a shaft (8) to a controllable electric motor (7) mounted in the cap (6) ) in the housing (4) of the cuvette compartment and from the replaceable additive tube (3) which is led through the cap (6) by means of the pressure source connection (9).
CS832182A 1982-11-22 1982-11-22 Mixing and adding equipment to spectrophotometers CS228799B1 (en)

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