In modern medical testing, biopharmaceuticals, laboratory research and other precision liquid operation scenarios, pipettes, as basic consumables, have extremely high requirements for sealing and airtightness. Any minor damage, cracks or processing defects may lead to inaccurate aspiration, cross contamination or even experimental failure. The automatic pipette leak detector provides a high-efficiency, high-precision, full-inspection quality assurance solution for experimental consumables manufacturers, and is one of the key equipment to promote industry intelligent detection and quality upgrades.

　　1. The importance of pipette sealing detection

　　Pipette needs to accurately absorb and release trace liquids during use, and its sealing performance directly affects its aspiration accuracy, anti-pollution ability and safety of use. If the following problems exist, it will seriously affect the use effect:

　　The tube wall has microcracks, bubbles or sand holes;

　　The tube mouth has micro-injuries and deformations, which affect negative pressure aspiration;

　　Uneven materials lead to the inability to evenly transmit pressure;

　　The plug core or the seal is not tight, resulting in leakage or liquid seepage.

　　Traditional detection methods mostly use manual sampling, which is not only inefficient, but also has a high rate of missed detection, especially in batch production of more than one million, the quality risk is relatively high. Therefore, the automatic pipette leak detector has become the core equipment to ensure the consistency of product sealing.

　　2. Equipment principle and structural composition of the automatic pipette leak detector

　　The automatic pipette leak detector is an intelligent detection equipment based on the principle of air pressure difference detection or vacuum negative pressure method, which realizes the full inspection of the sealing performance of each pipette through automated means. Its core components include:

　　Automatic feeding system: using vibration plate, conveyor belt, manipulator and other methods, the pipettes to be inspected are arranged in order and sent to the inspection station.

　　Sealing fixture and gas path system: seal the inlet and outlet of the pipette through a special fixture, connect the air pressure or vacuum pipeline, and apply standard air pressure or negative pressure.

　　Sensor detection module: The high-sensitivity pressure sensor monitors the pressure change of the cavity in real time to determine whether there is a leak, and the detection accuracy can reach 0.01mbar.

　　Data processing and judgment system: built-in PLC or industrial computer quickly processes the test results, and qualified and unqualified products are sorted in real time.

　　Automatic rejection and material collection system: after the test is completed, good products automatically flow into the material collection channel, and defective products are automatically rejected to avoid the risk of mixing.

　　Touch operation interface and parameter setting system: support operators to set parameters such as test pressure value, time threshold, alarm setting, etc., and visualize the test curve and statistical data.

　　3. Equipment advantages and technical highlights

　　High detection efficiency: a single machine can detect 50 to 120 pipettes per minute, far exceeding the efficiency of manual visual sampling.

　　Full inspection to ensure quality consistency: achieve 100% sealing detection of each pipette, greatly reducing customer complaints and quality accident risks.

　　High detection accuracy and low misjudgment rate: using high-sensitivity pressure sensors and self-learning algorithms to filter normal fluctuation interference and ensure that the false alarm rate is less than 0.5%.

　　Simple operation and high degree of automation: touch screen operation, adjustable parameters, automatic feeding and discharging throughout the process, ordinary operators can take up their posts.

　　Supports multi-specification product switching: can quickly adapt to different specifications of pipettes such as 1mL, 5mL, 10mL, 25mL, etc., and the adjustment is convenient and flexible.

　　Expandable data traceability function: optional barcode recognition, batch recording, test data upload and other functions to help enterprises with digital management.

　　As the laboratory consumables manufacturing industry accelerates into the era of intelligence, the automatic leak detector for pipettes is gradually becoming an indispensable quality assurance link on the production line. It not only greatly improves the detection efficiency and accuracy, but also helps enterprises establish a comprehensive and systematic quality control system. For any laboratory consumables company that pursues high quality, high efficiency, and zero defects, investing in an automatic leak detector is not only an equipment upgrade, but also a long-term guarantee of brand and reputation.