Laboratory Microbial Limit Testing Triple

Laboratory Microbial Limit Testing Triple

1、 Main features of microbial limit tester
1. Quick connect design, no need for additional fixtures, spiral mouth design, easy and fast to use.
2. Stainless steel filter cup and plastic filter cup are available in two materials: choose different filter cup materials according to different experimental situations.
3. You can freely choose the left and right silicone tube connections, and according to the specific experimental situation, select the placement position of the vacuum notebook.
4. Modular design, each support is equipped with an independent valve, which can filter individual samples independently or filter multiple samples simultaneously, saving a lot of time when detecting a large number of samples.
5. The overall material is made of high-quality 316L grade stainless steel, with fine craftsmanship and the ability to undergo high-temperature and high-pressure sterilization.
6. The stable low center of gravity design prevents it from tipping over when fully loaded with solution, making it durable and long-lasting.
7. 300ml 316L stainless steel filter cup, with a large sample processing capacity.
8. Overall detachable, including filter cup, filter head, stainless steel valve, bracket, and filter tube for easy cleaning and sterilization.
2、 Operation method of microbial limit tester:
Place the sterile microporous filter membrane on the support pad of the sterilized filtration system, install the sterilized filter cup, pour in the liquid sample to be tested, turn on the vacuum pump to -0.5 atmospheric pressure, open the corresponding filter cup valve for filtration. At this time, the microorganisms contained in the sample are trapped and enriched on the filter membrane. Then, attach the filter membrane to the corresponding culture medium for constant temperature cultivation, and count the corresponding colonies.
3、 Precautions for Microbial Limit Tester
1. When the test sample contains insoluble particles or suspended solids, it may cause membrane blockage and affect filtration. The test sample should be pretreated to remove particles or suspended solids;
2. When the instrument is not working, please turn off the power;
3. Before filtration, ensure that the pipeline is well sealed;
4. Select the filter membrane material based on the test characteristics, and ensure the integrity of the filter membrane before and after filtration;
5. Cannot filter strong acids, strong alkalis, strong oxidants, strong corrosive liquids, etc.

Laboratory Microbial Limit Testing Triple

Technical Specifications:

1. Applicable filter membrane diameter: Φ 47mm/50mm;

2. Effective filtration diameter: 40mm;

3. Filter cup capacity: 150ML (250ml optional);

3. Number of filter heads: 1/3/6;

4. Detection method: membrane filtration method;

5. Filtration method: Diaphragm pump negative pressure filtration, no need for gas cylinder extraction;

6. Extraction rate: 100ml/15s (with membrane);

7. Sterilization methods for filter heads: wet heat sterilization, flame rapid sterilization;

8. Filter head: detachable.

Operating procedures for application and protection maintenance:
1. The purpose of this procedure is to ensure the normal operation, protection, and maintenance of the standard microbial limit tester.
2. This program is suitable for the use and operation of microbial limit inspection instruments.
3. Responsible QC room instrument analysts shall implement this operating procedure and be responsible for the use and protection of the instruments; The QC director supervises the implementation of this program.
4. Terminology and Definition None
5. Instructions for the use and operation of the microbial limit tester in relevant documents.
6. Content 6.1 Turn on the power supply.
6.2 Filtering Operation
The microporous membrane and disposable microbial limit filter are connected to the filter head to ensure that the microporous membrane is intact.
Inject the pre prepared test solution into the filter cup, and do not operate the large scale of the filter cup.
Press the "power" button, then open the corresponding valve, and press the "power" button again to complete the bacterial collection and filtration
After all the test solutions have been filtered, close the corresponding valves and press the "power" button to complete the bacterial collection and filtration.
Extreme viewing system application and protection maintenance operation procedures
Remove the filter, hold down the membrane removal device, and use sterile forceps to remove the microporous membrane.
The microporous membrane should be placed with the bacterial surface facing up and flat on the prepared culture medium. There should be no bubbles on the microporous membrane (bubbles can affect the growth of microorganisms).
Transfer the culture dish to a constant temperature incubator under regular temperature conditions for cultivation.
After completing the operation of the microbial limit meter, cut off the power supply.
Clean the exterior of the host with alcohol.
It is necessary to have effective grounding for the protection and maintenance of instruments. Select filter membrane materials based on the test characteristics, and ensure the integrity of the filter membrane before and after filtration.
When the instrument is not working, disconnect the power supply. When the instrument is in standby mode, turn off the solenoid valve and set it to the "off" state.
Can't filter strong acid? Strong alkali? Strong oxidant? Strong corrosive liquids.
When the test sample contains insoluble particles or suspended solids, it may cause membrane blockage and affect filtration. The test solution should be pretreated to remove particles or suspended solids.
Before filtration, it should be ensured that the pipeline has excellent sealing performance.
Before opening the sterile packaging using a disposable microbial limit filter, check if the packaging is damaged.
The liquid height when adding the test solution should not exceed the large scale of the filter cup.
Microbial limit tester should always pay attention to the condition of the filter bottle, and the liquid should not swallow the inlet. Be able to select the volume of the filter bottle based on the actual situation.
If chemical agents are used for disinfection in the sterile room, place the instrument in a sealed cover or move it out of the sterile room to avoid damaging electronic components and corroding metal parts.
The ambient temperature should be controlled between 10 ℃ and 30 ℃. Condensation phenomenon of anhydrous beads with relative humidity ≤ 80% RH.
After each use, clean the surface of the instrument with alcohol.