FR2104828A1 - Precision liquid measuring device - for very small quantities of liquid in culture processes - Google Patents
Precision liquid measuring device - for very small quantities of liquid in culture processesInfo
- Publication number
- FR2104828A1 FR2104828A1 FR7128675A FR7128675A FR2104828A1 FR 2104828 A1 FR2104828 A1 FR 2104828A1 FR 7128675 A FR7128675 A FR 7128675A FR 7128675 A FR7128675 A FR 7128675A FR 2104828 A1 FR2104828 A1 FR 2104828A1
- Authority
- FR
- France
- Prior art keywords
- liquid
- reservoir
- recipient
- valve
- measuring device
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
- G01F11/42—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rotary or oscillatory type
- G01F11/44—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rotary or oscillatory type for liquid or semiliquid
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
Device is intended partic. for feeding growing biological cultures in tanks, the capacity of which may vary from 38-380 litres. The liquid which has to be measured is stored in a reservoir with an outlet pipe at its base. A measuring recipient, located inside the reservoir or outside, is in the form of a vertical column and is connected to the reservoir by a two-way full bore valve. A discharge pipe evacuates the liquid from the vertical recipient, when the valve is placed in its other position, to the culture vessel. A timing device is provided so that the filling and emptying of the measuring recipient is effected at definite intervals of time. The level of the liquid in the reservoir is maintained by a float-valve and this, therefore, controls the liquid level in the measuring recipient.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6041870A | 1970-08-03 | 1970-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2104828A1 true FR2104828A1 (en) | 1972-04-21 |
Family
ID=22029339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7128675A Withdrawn FR2104828A1 (en) | 1970-08-03 | 1971-07-30 | Precision liquid measuring device - for very small quantities of liquid in culture processes |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE770838A (en) |
| DE (1) | DE2138680A1 (en) |
| FR (1) | FR2104828A1 (en) |
| IL (1) | IL37265A0 (en) |
-
1971
- 1971-07-08 IL IL37265A patent/IL37265A0/en unknown
- 1971-07-30 FR FR7128675A patent/FR2104828A1/en not_active Withdrawn
- 1971-08-02 BE BE770838A patent/BE770838A/en unknown
- 1971-08-03 DE DE19712138680 patent/DE2138680A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IL37265A0 (en) | 1971-10-20 |
| DE2138680A1 (en) | 1972-02-10 |
| BE770838A (en) | 1971-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |