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DE664852C - Reagent tube - Google Patents

Reagent tube

Info

Publication number
DE664852C
DE664852C DEK138171D DEK0138171D DE664852C DE 664852 C DE664852 C DE 664852C DE K138171 D DEK138171 D DE K138171D DE K0138171 D DEK0138171 D DE K0138171D DE 664852 C DE664852 C DE 664852C
Authority
DE
Germany
Prior art keywords
tube
reagent tube
axis
reagent
shifted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEK138171D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CLARA NORA KIRSCHSTEIN GEB HAE
WILHELM KIRSCHSTEIN DR
Original Assignee
CLARA NORA KIRSCHSTEIN GEB HAE
WILHELM KIRSCHSTEIN DR
Publication date
Priority to DEK138171D priority Critical patent/DE664852C/en
Application granted granted Critical
Publication of DE664852C publication Critical patent/DE664852C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/508Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above
    • B01L3/5082Test tubes per se

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Description

Reagensrohr Die blichen Reagiergläser zeigen den Nachteil, daß bei der Durchführung chemischer Reaktionen in ihnen leicht ein Teil des Inhalts verspritzt, wenn man diesen zum Sieden erhitzt. Dieser Nachteil tritt besonders dann in Erscheinung, wenn im Verlauf der Umsetzung Niederschläge entstclltn, wie das häu-fig bei medizinisch-chemischen Reaktionen der Fall ist. Dann kann es leicht vorkommen, daß der gesamte Inhalt des Reagensglases bei der Durchführung des Versuchs stoßartig herausgeschleudert wird, so daß die Umsetzung wiederholt werden muß, was gerade bei biologischen Reaktionen, bei denen nicht unbeschränkte Substanzmengen zur Verfügung stehen, als sehr störend empfunden wird.Reagent tube The usual test tubes have the disadvantage that at performing chemical reactions in them easily splashed part of the content, if you heat it to the boil. This disadvantage is particularly evident if precipitation occurs in the course of the implementation, as is often the case with medical-chemical Reactions is the case. Then it can easily happen that the entire content of the The test tube is thrown out abruptly when carrying out the experiment, so that the implementation has to be repeated, which is especially the case with biological reactions, in which there are not unlimited amounts of substance available as very annoying is felt.

Zur Vermeidung dieses Übelstandes ist schon vorgeschlagen worden, Reagensrohre in ihrem oberen Teil kugelförmig zu erweitern. To avoid this inconvenience, it has already been suggested To expand the reagent tubes spherically in their upper part.

In einem derartigen Reagensrohr wird jedoch das Herausspritzen des Inhalts beim Kochen nicht verhindert, da die Grundflächen des Rohres und der Kugel konzentrisch übereinander angeordnet sind. Weiterhin sind Erlenmeyerkolben in Vorschlag gebracht worden, bei denen der Boden schräg zur Achse verläuft, derart, daß der Kolben schräg steht und hierbei sich die Grundflächen der Ausfluß öffnung nnd des Gefäßes nicht überschneiden, eine Anordnung, die grundsätzlich durch Schrägstellen jedes Kochgefäßes erreicht wird.In such a reagent tube, however, the splashing out of the Contents when boiling are not prevented because of the base of the pipe and the ball are arranged concentrically one above the other. Erlenmeyer flasks are also suggested been brought, in which the bottom is inclined to the axis, such that the The piston is inclined and the base areas of the outflow opening and the The vessel does not overlap, an arrangement that is basically made by inclinations every cooking vessel is reached.

Die Übertragung dieses Prinzips auf Reagierröhren führt zu Reagierröhren mit abgeschrägtem Boden, bei denen aber, wie Versuche ergaben, die Flüssigkeit beim Kochen genau so leicht herausgeschleudert wird wie aus dem üblichen Reagierrohr.Applying this principle to reaction tubes leads to reaction tubes with a sloping bottom, but in which, as tests have shown, the liquid at Cooking is ejected just as easily as from the usual reaction tube.

Es wurde nun die Feststellung gemacht, daß sich der angeführte Übelstand des Herausspritzens vermeiden läßt, wenn man nach der Erfindung dem Reagensrohr entweder eine S-förmige Biegung erteilt, derart, daß die Mündung seitlich aus der Achse des Rohres verlagert ist, wie dies die Abb. I der Zeichnung zeigt, oder aber das bekannte Reagensrohr, welches in der oberen Hälfte kugelförmig erweitert ist, in der Weise ausbildet, daß der Mündungsteil des Rohres seitlich aus der Achse desselben verlagert an die Erweiterung angesetzt ist, wie dies in den Abb. 2 und 3 dargestellt ist. Führt man in Reagensgläsern dieser Art beliebige Umsetzungen, auch bei Vorhandensein oder Bildung von Niederschlägen, aus, so tritt ein Herausschleudern des Inhalts niemals ein, wie viele Versuche ergeben haben. It has now been ascertained that the above-mentioned problem has been resolved The splashing out can be avoided if, according to the invention, the reagent tube either given an S-shaped bend such that the mouth extends laterally out of the Axis of the pipe is shifted, as Fig. I of the drawing shows, or else the well-known reagent tube, which is expanded spherically in the upper half, forms in such a way that the mouth part of the tube is laterally off the axis of the same shifted to the extension, as shown in Figs. 2 and 3 is. If any reactions are carried out in test tubes of this type, even if they are present or formation of precipitates, the contents are thrown out never enter how many attempts have shown.

Claims (2)

P A T E N T A N S P R Ü C H E : 1. Reagensorhr, gekennzeichnet durch eine S-förmige Biegung desselben, derart, daß die Mündung aus der Achse des Rohres seitlich verlagert ist. P A T E N T A N S P R Ü C H E: 1. Reagent tube, characterized by an S-shaped bend of the same, such that the mouth is off the axis of the tube is shifted laterally. 2. Reagensrohr mit kugelförmiger Erweiterung in der oberen Hälfte, dadurch gekennzeichnet, daß der Mündungsteil des Rohres seitlich aus der Achse des Rohres verlagert an die Erweiterung angesetzt ist. 2. Reagent tube with a spherical extension in the upper half, characterized in that the mouth part of the tube is laterally off the axis of the Rohres shifted to the extension is attached.
DEK138171D Reagent tube Expired DE664852C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK138171D DE664852C (en) Reagent tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK138171D DE664852C (en) Reagent tube

Publications (1)

Publication Number Publication Date
DE664852C true DE664852C (en) 1938-09-07

Family

ID=7249048

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK138171D Expired DE664852C (en) Reagent tube

Country Status (1)

Country Link
DE (1) DE664852C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625823A (en) * 1948-04-23 1953-01-20 Elmer L Erickson Liquid graduate
DE947762C (en) * 1953-11-12 1956-08-23 Dr Med Kurt Fritz U-shaped reagent tube (cooking tube)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625823A (en) * 1948-04-23 1953-01-20 Elmer L Erickson Liquid graduate
DE947762C (en) * 1953-11-12 1956-08-23 Dr Med Kurt Fritz U-shaped reagent tube (cooking tube)

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