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. Built-in diaphragm pump design: adopts 2 high-performance diaphragm pumps with low noise and stable performance; no external suction filtration bottle is needed, and samples can be discharged directly after filtration, improving operational convenience.

2. Independent detachable filtration components: modular filtration unit design for easy assembly and disassembly, cleaning, sterilization and maintenance.

3. Independent knob control: knob-type switch design, with each pump head independently started and stopped for intuitive operation and improved experimental efficiency.

4. Online rapid sterilization with strong compatibility: the filter head can be rapidly sterilized, in combination with a flame gun or high-temperature sterilization, facilitating continuous operation and laboratory cross-contamination control.

5. Durable material and easy-to-clean structure: the housing and filtration components are made of corrosion-resistant materials such as stainless steel, processed by wire drawing and other techniques, with a smooth surface that is easy to disinfect, helping to maintain a clean experimental environment.

Technical Parameters