Bacterial Turbidity Meter

Instrument Introduction

This instrument is a bacterial suspension concentration quantification device designed specifically for the microbiological testing field. It uses the McFarland turbidity (MCF) unit and is calibrated against McFarland turbidity standard substances, directly displaying the McFarland turbidity value of the bacterial suspension. Compared with the traditional visual turbidity comparison method, this instrument eliminates human reading errors and achieves objective quantitative detection of bacterial suspension concentration. It is suitable for bacterial suspension concentration determination in medical and health institutions, biological products manufacturers, quarantine institutions and scientific research units.

Detection Principle

This instrument complies with the relevant requirements of JJF 1825-2020 (Calibration Specification for McFarland Bacterial Turbidity Analyzers). When a stable light source passes through a sample cell containing the bacterial suspension to be tested, the bacterial particles in the suspension absorb and scatter the incident light, causing the transmitted light intensity to change. Within a certain range, this change is proportional to the bacterial concentration in the suspension. By measuring the change in light intensity, the bacterial concentration can be indirectly reflected.

Applicable Standards

JJF 1825-2020 Calibration Specification for McFarland Bacterial Turbidity Analyzers

JJG 880-2006 Verification Regulation for Turbidimeters

Chinese Pharmacopoeia general chapters - relevant requirements of the microbiological limit test method

Application Scope

Medical and health institutions: standardized adjustment of bacterial suspension concentration before bacterial identification and drug sensitivity testing.

Biological products enterprises: quality control of bacterial suspension concentration in the production of vaccines, bacterial vaccines and other biological products.

Quarantine institutions: microbiological testing in import and export inspection.

Scientific research institutions: bacterial concentration determination in microbiology, fermentation engineering and other fields.

Aquaculture: pathogenic bacteria detection and drug sensitivity evaluation.

Instrument Features

Android 12 system, 4.3-inch handheld touch integrated operation.

Adopts an 860 nm LED light source, stable and reliable.

Calibrated with McFarland turbidity standard substances; results output in MCF units.

Measurement range 0.0-6.0 MCF, expandable as needed.

Supports manual zero calibration, compensating for light source attenuation and detection tube differences, ensuring the built-in calibration curve is accurate.

Supports user self-calibration; recalibration is possible when detection results deviate or the detection tube is replaced.

Compatible with 16 mm detection tubes and 15 mm × 150 mm disposable glass test tubes.

Large-capacity local data storage of no less than 10,000 records.

Wi-Fi networked remote software upgrade; detection data can also be uploaded wirelessly to the platform.

Chinese / English language switching.

Instrument Parameters