FR2691374A1 - Filter bag for microbiological analysis. - Google Patents
Filter bag for microbiological analysis. Download PDFInfo
- Publication number
- FR2691374A1 FR2691374A1 FR9206349A FR9206349A FR2691374A1 FR 2691374 A1 FR2691374 A1 FR 2691374A1 FR 9206349 A FR9206349 A FR 9206349A FR 9206349 A FR9206349 A FR 9206349A FR 2691374 A1 FR2691374 A1 FR 2691374A1
- Authority
- FR
- France
- Prior art keywords
- bag
- filter
- walls
- filtrate
- sample
- 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.)
- Granted
Links
- 238000012543 microbiological analysis Methods 0.000 title abstract description 3
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 2
- 229920006255 plastic film Polymers 0.000 claims 2
- 230000002906 microbiologic effect Effects 0.000 claims 1
- 239000000706 filtrate Substances 0.000 abstract description 16
- 239000007787 solid Substances 0.000 abstract description 9
- 239000012045 crude solution Substances 0.000 abstract 3
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000011109 contamination Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/012—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
- B01D29/27—Filter bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
Abstract
L'invention concerne un sac filtrant permettant d'obtenir un filtrât à partir d'une solution brute, ce sac comprenant deux compartiments seulement et une grande surface de filtration. Il est constitué de deux parois en matériaux déformable 1 et 2 et d'un filtre 3 soudées ensemble sur les trois cotés A1, A2 et A3. Le filtre étant positionné entre les parois 1 et 2 et délimitant ainsi deux compartiments; X pour la solution brute et Y pour le filtrât. Lorsque l'utilisateur introduit une solution brute celle-ci diffuse à travers le filtre, et le filtrât obtenu est exempt de particules solides d'une taille donnée. Ce sac filtrant est particulièrement destiné à la préparation d'échantillons en analyse microbiologique.The invention relates to a filter bag for obtaining a filtrate from a crude solution, said bag comprising only two compartments and a large filtration surface. It consists of two walls made of deformable materials 1 and 2 and a filter 3 welded together on the three sides A1, A2 and A3. The filter being positioned between the walls 1 and 2 and thus delimiting two compartments; X for the crude solution and Y for the filtrate. When the user introduces a crude solution, it diffuses through the filter, and the filtrate obtained is free from solid particles of a given size. This filter bag is particularly intended for the preparation of samples for microbiological analysis.
Description
L'invention est relative à un sachet qui peut être utilisé pour préparerThe invention relates to a sachet which can be used to prepare
un filtrât à partir d'un échantillon solide, fibreux, non homogène ou insoluble, en vue de son analyse microbiologique Quand un échantillon contaminé, ou supposé contaminé contient des parties solides ou insolubles, il n'est pas possible d'obtenir directement un a filtrate from a solid, fibrous, non-homogeneous or insoluble sample for microbiological analysis When a contaminated or suspected contaminated sample contains solid or insoluble parts, it is not possible to directly obtain a
filtrât analysable.analyzable filter.
La méthode traditionnelle est alors d'ajouter une solution physiologique à l'échantillon solide, d'agiter la solution obtenue pour laver l'échantillon, puis de retirer l'échantillon solide et s'il est nécessaire, de diluer la nouvelle solution obtenue Les méthodes couramment utilisées pour séparer l'échantillon solide de la solution sont soit de recueillir le liquide surnageant après que la partie solide ait sédimentée, soit de filtrer la solution avec un papier filtre Pour faciliter cette opération de séparation différents types de sachet ont The traditional method is then to add a physiological solution to the solid sample, to agitate the solution obtained to wash the sample, then to remove the solid sample and if necessary, to dilute the new solution obtained. commonly used methods to separate the solid sample from the solution are either to collect the supernatant liquid after the solid portion has sedimented, or to filter the solution with a filter paper To facilitate this separation operation different types of sachet have
été développés, ils sont présentés en Fig 2, Fig 3 et Fig 4. have been developed, they are presented in Fig 2, Fig 3 and Fig 4.
Nous allons tout d'abord expliquer le principe du sachet de la fig 2 Un échantillon est introduit à travers une ouverture du sachet dans le grand compartiment X (compartiment de la solution brute) qui est un des deux compartiments du sachet, il est alors filtré à travers un filtre papier 3, et guidé dans le petit compartiment Y (compartiment du filtrât), enfin il est versé dans un autre récipient grâce à une ouverture We will first explain the principle of the bag of fig 2 A sample is introduced through an opening of the bag in the large compartment X (compartment of the raw solution) which is one of the two compartments of the bag, it is then filtered through a paper filter 3, and guided in the small compartment Y (filter compartment), finally it is poured into another container through an opening
du sachet.of the bag.
Dans la Fig 2, E représente une séparation verticale réalisée par soudure et F une séparation transversale réalisée par soudure retenant le contenu du sachet en position diagonale pour verser In FIG. 2, E represents a vertical separation made by welding and F a transversal separation made by welding retaining the contents of the bag in a diagonal position to pour
l'échantillon dans un récipient.the sample in a container.
Ce sac conventionnel est très pratique et performant car le filtrât est bien séparé de l'échantillon solide ou fibreux Cependant, pour obtenir le filtrât, on doit verser le contenu du sac dans un récipient additionnel, This conventional bag is very practical and efficient because the filtrate is well separated from the solid or fibrous sample However, in order to obtain the filtrate, the contents of the bag must be poured into an additional container,
aussi ce sac n'est pas totalement satisfaisant. also this bag is not completely satisfactory.
Nous allons présenter le principe du sachet de la figure 3 L'échantillon est introduit à travers une ouverture du sachet dans le grand compartiment X (compartiment de la solution brute) qui est un des deux compartiments du sachet, il est alors filtré à travers un filtre 3 et We will present the principle of the bag of Figure 3 The sample is introduced through an opening of the bag in the large compartment X (compartment of the raw solution) which is one of the two compartments of the bag, it is then filtered through a filter 3 and
se déverse dans le petit compartiment Y (compartiment du filtrât). flows into the small compartment Y (filter compartment).
Dans la Fig 3, Ai et A 2 représentent les parois verticales du sac réalisées par soudure, A 3 représente la paroi horizontale inférieure B et C sont les points d'accrochage du filtre 3 sur les parois verticales, le filtrât est récupéré en le prélevant avec une pipette dans le compartiment Y, ou en versant le contenu de Y dans un récipient extérieur. Ce sac plus évolué est aussi très pratique et performant car en plus du sac conventionnel il est autonome Cependant, comme le volume de l'échantillon et du filtrât utilisé dans ce genre de sac est réduit (de îo l'ordre de 150 mi)) et que le filtre a sa plus grande longueur verticalement, la surface de filtration est très faible, ce qui ne permet pas de l'utiliser avec succès pour des échantillons pâteux D'autre part le filtre étant en double épaisseur quand on ferme le sachet, il en résulte une grande difficulté pour souder le sachet le long de la paroi horizontale supérieure, ce qui est grandement conseillé pour maintenir la non contamination du sachet par des contaminants extérieurs en cas de stockage et aussi pour l'élimination du sachet après analyse par un circuit spécial de traitement des déchets (et non In FIG. 3, A 1 and A 2 represent the vertical walls of the bag made by welding, A 3 represents the lower horizontal wall B and C is the attachment points of the filter 3 on the vertical walls, the filtrate is recovered by taking it out. with a pipette in compartment Y, or by pouring the contents of Y into an outer container. This more advanced bag is also very practical and efficient because in addition to the conventional bag it is autonomous However, as the volume of the sample and the filtrate used in this kind of bag is reduced (by about 150 mi)) and that the filter has its greatest length vertically, the filtration surface is very low, which does not allow to use it successfully for pasty samples On the other hand the filter being in double thickness when closing the bag, this results in great difficulty in welding the bag along the upper horizontal wall, which is highly recommended to maintain the contamination of the bag by external contaminants in case of storage and also for the removal of the bag after analysis by a special circuit for the treatment of waste (and not
par les évacuations d'eau usées).by the evacuations of used water).
Nous allons présenter le principe du troisième type de sachet qui est représenté par la Fig 4 L'échantillon est introduit dans le compartiment intérieur X (compartiment de la solution brute) qui est un des deux compartiments du sachet, il est alors filtré à travers les parois de ce compartiment et se déverse dans le sachet qui est divisé We will present the principle of the third type of bag which is represented by Fig 4. The sample is introduced into the inner compartment X (compartment of the raw solution) which is one of the two compartments of the bag, it is then filtered through the walls of this compartment and pours into the bag that is divided
en deux parties Y 1 et Y 2 (compartiments du filtrât). in two parts Y 1 and Y 2 (filtrate compartments).
Dans la Fig 4, Ai et A 2 représentent des soudures verticales et A 3 une soudure horizontale inférieure 1 et 2 sont les parois du sachet et 3 et 4 les parois du filtre Le filtre est soit un sachet indépendant du sachet principal, soit attaché à celui-ci par des soudures sur les bords verticaux, soit par un ou plusieurs points de soudure unissant In FIG. 4, A 1 and A 2 represent vertical welds and A 3 a lower horizontal weld 1 and 2 are the walls of the bag and 3 and 4 the walls of the filter. The filter is either a bag independent of the main bag or attached to this one by welds on the vertical edges, either by one or more points of welding uniting
ponctuellement les parois 1 et 3 et 2 et 4 respectivement. punctually the walls 1 and 3 and 2 and 4 respectively.
Ce type de sachet est satisfaisant car il permet une bonne séparation de l'échantillon brute grâce à une surface de filtration suffisamment importante Cependant la séparation en trois compartiment rend très délicate, l'opération d'introduction de l'échantillon car il en résulte que le compartiment X est peu ouvert, et l'opération de recueil du filtrât à cause du déficit de volume résultant de la division en trois compartiment ou à cause de la difficulté à introduire un instrument de prélèvement due au manque d'espace résultant de la présence de deux parois filtres intérieure Aussi ce dernier type de sachet filtre This type of bag is satisfactory because it allows a good separation of the raw sample thanks to a sufficiently large filtration surface However the separation into three compartments makes very delicate the operation of introduction of the sample because it follows that compartment X is not open, and the operation of collecting the filtrate because of the volume deficit resulting from the division into three compartments or because of the difficulty to introduce a sampling instrument due to the lack of space resulting from the presence of two inner filter walls Also this last type of filter bag
n'est pas entièrement satisfaisant. is not entirely satisfactory.
La présente invention a pour but de remédier aux inconvénients sus- The object of the present invention is to remedy the drawbacks
indiqués des sacs filtres dont les types sont présentés en Fig 2, 3 et 4. indicated filter bags whose types are shown in Figs 2, 3 and 4.
Cette invention concerne un sac filtrant dans lequel on introduit un échantillon brut et grâce auquel on récupère un filtrât Cependant avec le sac filtrant de la présente invention le filtrât peut être directement récupéré sans nécessiter l'emploi d'un autre récipient et sans contamination par les particules solides ou fibreuses de l'échantillon De plus le sac filtrant de la présente invention possède une surface de filtration importante ce qui permet la filtration des échantillons les plus difficilement filtrables sans colmatage du filtre Le sac filtrant de la présente invention possède seulement deux compartiments, un pour l'échantillon brut et l'autre pour le filtrât et une seule paroi filtrante à l'intérieur, il en résulte deux compartiments de grande taille ce qui facilite grandement l'opération d'introduction de l'échantillon et de récupération du filtrât et permet d'éviter le déchirement de la paroi filtrante lors du prélèvement du filtrât ainsi que de souder facilement la paroi horizontale supérieure dans le but de conserver le contenu du sac à l'abri de contaminations extérieures ou pour éliminer le sac et son contenu par un circuit spécialisé de traitement de déchets Enfin le sac de la présente invention peut posséder des parois extérieures de couleurs différentes ce qui permet de différencier le compartiment de l'échantillon brut du compartiment du filtrât et facilite ainsi grandement leur identification certaine et systématique Cette caractéristique peut aussi apporter une protection contre les rayonnements extérieurs qui risquent de fausser l'analyse en modifiant la contamination microbienne et permet d'utiliser ce sac filtrant en milieu extérieur pour le prélèvement direct This invention relates to a filter bag in which a raw sample is introduced and by means of which a filtrate is recovered. However, with the filter bag of the present invention, the filtrate can be directly recovered without requiring the use of another container and without contamination by the filters. In addition, the filter bag of the present invention has a large filtration area which makes it possible to filter the samples which are difficult to filter without clogging the filter. The filter bag of the present invention has only two compartments. one for the raw sample and the other for the filtrate and a single filter wall inside, resulting in two large compartments which greatly facilitates the operation of introducing the sample and recovering the filtrate. and avoids the tearing of the filtering wall during the removal of the filtrate and that of easily solder the upper horizontal wall in order to keep the contents of the bag away from external contaminations or to eliminate the bag and its contents by a specialized waste treatment circuit Finally the bag of the present invention can have external walls of different colors which makes it possible to differentiate the compartment of the raw sample from the filtrate compartment and thus greatly facilitates their certain and systematic identification. This characteristic can also provide protection against external radiations which may distort the analysis by modifying microbial contamination and allows to use this filter bag in external environment for direct sampling
d'échantillon sur site.sample on site.
Le sac filtrant de la présente invention est caractérisé par deux parois extérieures dans un matériaux imperméable et plastique qui sont ouvertes d'un seul coté de façon à former un sachet et une paroi filtrante positionnée entre les deux parois extérieures (citées plus haut) et soudées entre ses deux parois, cette paroi filtrante étant perméable a des particules d'une certaine taille et imperméable a The filter bag of the present invention is characterized by two outer walls in a waterproof and plastic material which are open on one side to form a bag and a filter wall positioned between the two outer walls (mentioned above) and welded between its two walls, this filtering wall being permeable to particles of a certain size and impermeable to
celles d'une taille supérieure.those of a larger size.
L'invention sera décrite plus en détail en regard du dessin annexé à titre d'exemple nullement limitatif et sur lequel: la Fig 1 est une vue en perspective du sac filtrant lo La Figure 1 représente un sac filtrant composé de deux parois 1 et 2 The invention will be described in more detail with reference to the accompanying drawing by way of non-limiting example and in which: FIG. 1 is a perspective view of the filter bag FIG. 1 represents a filter bag composed of two walls 1 and 2
et d'un filtre 3.and a filter 3.
Les deux parois 1 et 2 et le filtre 3 sont soudées ensemble sur les trois The two walls 1 and 2 and the filter 3 are welded together on the three
cotés Ai, A 2 et A 3 Le filtre 3 étant positionné entre les parois 1 et 2. side Ai, A 2 and A 3 The filter 3 being positioned between the walls 1 and 2.
Les trois parois ne sont pas en contact entre elles excepté sur les The three walls are not in contact with each other except on the
cotés Ai, A 2 et A 3.rated Ai, A 2 and A 3.
Les matériaux utilisés pour les deux parois 1 et 2 pourrait être par exemple du polyéthylène, du polypropylène, du polyester, un sandwich ou un complexe de différentes matières,ou d'autres matières Le matériaux utilisé pour le filtre pourrait être une feuille poreuse perméable à un liquide et imperméable à un solide d'une certaine taille A titre d'exemple non limitatif on peut citer des feuilles de matériaux synthétiques non tissé, des feuilles de plastique The materials used for the two walls 1 and 2 could be for example polyethylene, polypropylene, polyester, a sandwich or a complex of different materials, or other materials. The materials used for the filter could be a porous sheet permeable to A liquid and impermeable to a solid of a certain size As a non-limiting example, mention may be made of non-woven synthetic material sheets, plastic sheets
perforées ou d'autres encore.perforated or others.
Claims (3)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9206349A FR2691374B1 (en) | 1992-05-21 | 1992-05-21 | Filter bag for microbiological analysis. |
| ITUD930089A IT1262120B (en) | 1992-05-21 | 1993-05-20 | PROCEDURE FOR THE MANUFACTURE OF A FILTER BAG AND FILTER BAG SO OBTAINED |
| GB9310471A GB2267046B (en) | 1992-05-21 | 1993-05-20 | Deformable filter bag and its manufacturing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9206349A FR2691374B1 (en) | 1992-05-21 | 1992-05-21 | Filter bag for microbiological analysis. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2691374A1 true FR2691374A1 (en) | 1993-11-26 |
| FR2691374B1 FR2691374B1 (en) | 1994-12-23 |
Family
ID=9430128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9206349A Expired - Lifetime FR2691374B1 (en) | 1992-05-21 | 1992-05-21 | Filter bag for microbiological analysis. |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2691374B1 (en) |
| GB (1) | GB2267046B (en) |
| IT (1) | IT1262120B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2887465A1 (en) * | 2005-06-22 | 2006-12-29 | Interlab Sarl | Filtering bag for microbial analysis, comprises external sheets of plastic materials joined together by fixing lines extending to bag periphery, a filtering element and adhesive elements |
| WO2015150714A1 (en) | 2014-04-04 | 2015-10-08 | Prestodiag | Method of microbiological analysis of a sample in a unique container |
| FR3068617A1 (en) * | 2017-07-06 | 2019-01-11 | Interscience | FILTER BAG COMPRISING A DEVICE FOR FACILITATING THE COLLECTION OF A FILTRAT |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2719785B1 (en) * | 1994-05-13 | 1996-07-19 | Francois Jalenques | Filter bag for collecting, transporting and processing a sample for biological analysis. |
| JP4642188B2 (en) * | 2000-06-19 | 2011-03-02 | 株式会社エルメックス | Homogenizing bag with filter |
| FR2938449B1 (en) * | 2008-11-19 | 2010-12-31 | Interlab | SACHET, IN PARTICULAR A FILTER BAG, COMPRISING A DEVICE FOR FACILITATING THE COLLECTION OF A FILTRAT. |
| CN102824771A (en) * | 2012-09-07 | 2012-12-19 | 浙江硕华医用塑料有限公司 | Filter bag |
| CN102872628A (en) * | 2012-09-10 | 2013-01-16 | 浙江硕华医用塑料有限公司 | Filter bag |
| CN103447102A (en) * | 2013-08-07 | 2013-12-18 | 浙江硕华医用塑料有限公司 | Sample bag |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1816972A1 (en) * | 1967-12-26 | 1969-07-24 | Baxter Laboratories Inc | Filter for a device for parenteral inflow of fluids |
| US3675780A (en) * | 1970-09-25 | 1972-07-11 | Robert A Marshall | Filter device |
| US4265762A (en) * | 1978-11-24 | 1981-05-05 | Donaldson Company, Inc. | Filter assembly for use in the filtration of medical treatment liquids |
| GB2199510A (en) * | 1986-12-05 | 1988-07-13 | Toppan Printing Co Ltd | Filter bag |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS544121Y2 (en) * | 1974-07-05 | 1979-02-23 | ||
| US4066556A (en) * | 1976-10-28 | 1978-01-03 | Johnson & Johnson | Fluid filter and method of making same |
| CA1182758A (en) * | 1983-12-09 | 1985-02-19 | Anthony N. Sharpe | Apparatus for filtration |
-
1992
- 1992-05-21 FR FR9206349A patent/FR2691374B1/en not_active Expired - Lifetime
-
1993
- 1993-05-20 GB GB9310471A patent/GB2267046B/en not_active Expired - Lifetime
- 1993-05-20 IT ITUD930089A patent/IT1262120B/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1816972A1 (en) * | 1967-12-26 | 1969-07-24 | Baxter Laboratories Inc | Filter for a device for parenteral inflow of fluids |
| US3675780A (en) * | 1970-09-25 | 1972-07-11 | Robert A Marshall | Filter device |
| US4265762A (en) * | 1978-11-24 | 1981-05-05 | Donaldson Company, Inc. | Filter assembly for use in the filtration of medical treatment liquids |
| GB2199510A (en) * | 1986-12-05 | 1988-07-13 | Toppan Printing Co Ltd | Filter bag |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2887465A1 (en) * | 2005-06-22 | 2006-12-29 | Interlab Sarl | Filtering bag for microbial analysis, comprises external sheets of plastic materials joined together by fixing lines extending to bag periphery, a filtering element and adhesive elements |
| WO2015150714A1 (en) | 2014-04-04 | 2015-10-08 | Prestodiag | Method of microbiological analysis of a sample in a unique container |
| FR3068617A1 (en) * | 2017-07-06 | 2019-01-11 | Interscience | FILTER BAG COMPRISING A DEVICE FOR FACILITATING THE COLLECTION OF A FILTRAT |
| US10933355B2 (en) | 2017-07-06 | 2021-03-02 | Interscience | Filter bag incorporating a device to facilitate the removal of a filtrate |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2267046A (en) | 1993-11-24 |
| GB2267046B (en) | 1995-11-08 |
| FR2691374B1 (en) | 1994-12-23 |
| ITUD930089A1 (en) | 1994-11-20 |
| ITUD930089A0 (en) | 1993-05-20 |
| GB9310471D0 (en) | 1993-07-07 |
| IT1262120B (en) | 1996-06-19 |
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