CN212741355U

CN212741355U - Coliform group bacteria detection device

Info

Publication number: CN212741355U
Application number: CN202020902073.0U
Authority: CN
Inventors: 王美娟; 何亚斌; 王建军; 施雅; 高勇兴
Original assignee: Shanghai Bino Testing Technology Services Co ltd
Current assignee: Shanghai Bino Testing Technology Services Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-03-19
Anticipated expiration: 2030-05-26

Abstract

The utility model relates to a coliform group detection device, including first test tube, the second test tube, first sealed lid, the sealed lid of second, cotton swab and air duct, wholly be H shape through communicating pipe intercommunication between first test tube and the second test tube, be equipped with pressure switch on communicating pipe, sealing connection can be dismantled with the mouth of pipe of first test tube to first sealed lid, sealing connection can be dismantled with the mouth of pipe of second test tube to the sealed lid of second, the bottom of first sealed lid is equipped with the cotton swab that stretches into first test tube inside, the bottom of second test tube is arranged in the air duct slope. The utility model discloses be favorable to improving coliform group detection operation's simplicity, shorten the check-out period.

Description

Coliform group bacteria detection device

Technical Field

The utility model belongs to the technical field of little biological detection instrument, especially, relate to a coliform group detection device.

Background

The coliform group is a group of gram-negative bacillus-free bacteria which can ferment lactose, produce acid and gas, aerobe and facultative anaerobe, and whether the tableware is polluted or not can be represented by detecting the coliform group of the tableware. The existing coliform group detection process mainly comprises an initial fermentation experiment and a relapse fermentation experiment, the detection operation is relatively complicated, and the detection period is longer.

Disclosure of Invention

The utility model aims to solve the technical problem that a coliform group detection device is provided, be favorable to improving coliform group detection operation's simplicity, shorten the check cycle.

The utility model provides a technical scheme that its technical problem adopted provides a coliform group detection device, including first test tube, second test tube, first sealed lid, the sealed lid of second, cotton swab and air duct, it wholly is H shape through communicating pipe intercommunication between first test tube and the second test tube, be equipped with pressure switch on communicating pipe, sealing connection can be dismantled with the mouth of pipe of first test tube to first sealed lid, sealing connection can be dismantled with the mouth of pipe of second test tube to the sealed lid of second, the bottom of first sealed lid is equipped with the cotton swab that stretches into first test tube inside, the bottom of second test tube is arranged in to the air duct slope.

First test tube, second test tube and communicating pipe adopt transparent material to make.

The first sealed lid passes through the helicitic texture with the mouth of pipe of first test tube and is connected, the sealed lid of second passes through the helicitic texture with the mouth of pipe of second test tube and is connected.

Advantageous effects

The utility model discloses can conveniently detect the coliform group in the sample, improve coliform group detection operation's simplicity and convenience, need not to relapse the fermentation experiment, be favorable to shortening detection cycle.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

Fig. 1 shows a coliform group detection device, which comprises a first test tube 1, a second test tube 2, a first sealing cover 3, a second sealing cover 4, a cotton swab 5 and an air duct 6.

First test tube 1 and second test tube 2 are whole to be H shape through communicating pipe 7 intercommunication between, and first test tube 1, second test tube 2 all adopt transparent plastic to make with communicating pipe 7. Be equipped with pressure switch 8 on communicating pipe 7, when the inside pressure of first test tube 1 was greater than the inside pressure of second test tube 2, pressure switch 8 opened and is in the intercommunication state, and when the inside pressure of first test tube 1 equals the inside pressure of second test tube 2, pressure switch 8 closed.

The mouth of pipe of first sealed lid 3 and first test tube 1 passes through the helicitic texture and can dismantle sealing connection, and the bottom of first sealed lid 3 is equipped with the cotton swab 5 that stretches into the inside of first test tube 1. The sealed mouth of pipe of 4 and second test tube 2 of the sealed lid of second passes through the helicitic texture and can dismantle sealing connection, and the bottom in second test tube 2 is arranged in the slope of air duct 6 upside down.

When detecting coliform group bacteria: adding LST into the first test tube 1 to enable the LST to submerge the communicating tube 7; adding BGLB into the second test tube 2, wherein BGLB submerges the airway tube 6; immediately inserting the cotton swab 5 coated with the tableware into the LST, and putting the detection device into a constant-temperature incubator at 36 ℃ for culture; if gas is generated in the first test tube 1, the pressure in the test tube is increased, the pressure switch 8 on the communicating tube 7 is in an open state, the test tubes on the two sides are communicated, and the bacterial suspension in the first test tube 1 can flow into the BGLB tube through the communicating tube 7; the culture is continued and if there is a bubble at the top of the airway 6, detection of coliform bacteria can be reported. The confirmation of a re-fermentation experiment is not needed, the experimental steps are simplified, and the detection period is shortened.

Claims

1. A coliform group detection device, its characterized in that: including first test tube (1), second test tube (2), first sealed lid (3), the sealed lid of second (4), cotton swab (5) and air duct (6), be whole H shape through communicating pipe (7) intercommunication between first test tube (1) and second test tube (2), be equipped with pressure switch (8) on communicating pipe (7), sealed sealing connection can be dismantled with the mouth of pipe of first test tube (1) in first sealed lid (3), sealed lid of second (4) and the mouth of pipe of second test tube (2) can be dismantled sealing connection, the bottom of first sealed lid (3) is equipped with and stretches into inside cotton swab (5) of first test tube (1), the bottom of second test tube (2) is arranged in the slope of air duct (6).

2. The coliform group detection device of claim 1, wherein: first test tube (1), second test tube (2) and communicating pipe (7) adopt transparent material to make.

3. The coliform group detection device of claim 1, wherein: the first sealing cover (3) is connected with the pipe orifice of the first test tube (1) through a threaded structure, and the second sealing cover (4) is connected with the pipe orifice of the second test tube (2) through a threaded structure.