Intelligent Microbial Limit Tester

Product Introduction

The microbial limit tester is a dedicated microbial testing device designed and manufactured in accordance with the Chinese Pharmacopoeia and related industry standards. The device retains microorganisms in the test solution on a filter membrane by negative-pressure suction filtration; after culture, visible colonies are formed and the microbial count in the sample is accurately determined by counting. It is suitable for microbial limit testing in the pharmaceutical, food, cosmetics and chemical industries.

Applicable Standards

Chinese Pharmacopoeia 2025 Edition, Volume IV, General Technical Requirements and Guidelines 1105 - Microbiological Examination of Non-Sterile Products: Microbial Enumeration Tests

GB 8538-2022 Test Methods for Drinking Natural Mineral Water

GB/T 5750.12-2023 Standard Examination Methods for Drinking Water - Microbiological Indicators

Scope of Application

Pharmaceutical industry: suitable for microbial limit testing of pharmaceutical water (purified water, water for injection), liquid raw materials and non-sterile preparations.

Medical device industry: suitable for microbial limit testing of water used in medical device production (purified water, water for injection).

Food and beverage industry: used for microbial testing of bottled water, beer, baijiu, juice and other beverages as well as liquid raw materials in the production process.

Disease control field: used for total bacterial count and pathogenic bacteria testing of water samples such as drinking water and air-conditioning condensate.

Chemical industry: suitable for various water samples requiring microbial testing.

Main Features

1. Settable suction filtration time: supports setting of the suction filtration time parameter, effectively avoiding insufficient suction filtration of the test solution caused by human operation differences, and improving testing consistency.

2. Multi-diaphragm-pump integrated design: built-in multiple high-performance micro diaphragm pumps with low operating noise; no suction filtration bottle is needed, and the filtered liquid is discharged directly, making operation simpler.

3. Flexible sterilization methods: the filtration unit supports rapid flame sterilization and online disinfection; when disposable filter cups are used, the pump head adopts a plug-in structure for easy assembly and disassembly and compatibility with multiple sterilization methods.

4. Anti-backflow protection: a new anti-backflow technology effectively prevents liquid backflow and reduces the impact of misoperation on experimental results.

5. Multi-channel independent control: multiple filtration units can be started and stopped simultaneously or individually, meeting parallel testing needs and improving work efficiency.

6. Easy-to-clean structural design: the whole housing is made of stainless steel, processed by wire drawing and other techniques, with a smooth and flat surface for convenient daily cleaning and disinfection.

Technical Parameters