Automatic liquid dilution deviceThe selection of equipment needs to be based on three core dimensions: experimental requirements, accuracy requirements, and adaptation scenarios, combined with comprehensive judgment of equipment performance parameters and actual usage conditions. The specific techniques are as follows:

Determine core parameters according to experimental requirements

Range of liquid addition/dilution: Based on the processing volume of conventional samples, for small volume experiments (such as μ L level), micro automatic liquid addition diluents are preferred, which support precise liquid separation by nanoliter; For large volume samples (such as mL grade), choose models with wide range coverage to avoid errors caused by multiple liquid separations. At the same time, confirm whether the dilution ratio is adjustable, and select the fixed ratio or continuously adjustable dilution mode as needed.

Number of channels: Single channel is suitable for small batch sample processing and flexible operation; Multi channel (such as 8/12 channels) is suitable for high-throughput experimental scenarios and can greatly improve efficiency, such as dilution preparation of batch detection samples.

Prioritize controlling accuracy and repeatability indicators

Accuracy is the key to selection, and the focus is on checking the liquid addition error and repeatability error of the equipment. Conventional laboratories require a liquid addition error of ≤± 1% and a repeatability error of ≤± 0.5%; High precision experiments (such as biochemical detection and microanalysis) require the selection of models with an error margin of ≤± 0.3%.

Pay attention to the calibration function of the equipment and prioritize models that support automatic calibration or one click calibration to reduce errors caused by manual operation.

Match experimental environment with sample characteristics

Compatibility: If dealing with corrosive and viscous samples (such as strong acids and high concentration reagents), it is necessary to choose a model with corrosion-resistant materials (such as PTFE, stainless steel) for the pipeline and injection needle to prevent component corrosion and sample contamination; If dealing with volatile samples, priority should be given to models with sealed covers or anti volatile designs.

Environmental adaptability: For scenarios with large temperature fluctuations in the laboratory, equipment with temperature compensation function should be selected; If it is necessary to operate in a sterile environment, priority should be given to machines that can be sterilized at high temperatures or with ultraviolet radiation.

Focus on usability and scalability

Convenient operation: Novice friendly devices need to have touch screen control, preset program storage function, and the ability to call commonly used dilution solutions with one click; At the same time, check whether the human-computer interaction interface is clear and whether the parameter settings are simple.

Scalability: Choose models that can be connected to computers and printers as needed for easy data recording and traceability; Some models support the use of automatic samplers, which can achieve unmanned operation and are suitable for long-term batch experiments.

Combining maintenance costs with after-sales support

Choose models that are easy to disassemble and clean, reducing the difficulty of daily maintenance; Priority should be given to selecting consumables (such as suction heads and tubing) that are easy to purchase and have moderate costs.

Confirm the manufacturer's after-sales support, including whether to provide on-site calibration and repair services, as well as the warranty period, to avoid equipment failures affecting the experimental progress.