Lasair® Pro 310, 350 hay 5100: chọn model theo Grade, diện tích và thời gian mẫu

Lasair Pro 310, 350 and 5100 provide nominal flow rates of 28.3, 50 and 100 litres per minute. For a one-cubic-metre sample, the theoretical times are approximately 35.3, 20 and 10 minutes. Actual workflow also includes setup, purge, movement between locations and record completion.

A higher flow rate improves throughput for large sample volumes but does not automatically make every measurement more accurate. Probe position, tubing, recipe, flow control, concentration range and method remain important.

The 2026 PMS specification lists 0.3 to 25.0 micrometres for models 310 and 350 and 0.5 to 25.0 micrometres for model 5100. All three support up to eight configurable channels and an optional two-channel pharmaceutical mode. A site requiring a 0.3-micrometre channel should not select the 5100 only because it samples faster.

Model 310 supports the familiar one-CFM workflow. Model 350 balances faster sampling with a 0.3-micrometre lower range. Model 5100 supports rapid large-volume sampling where channels from 0.5 micrometres meet the intended use.

Cleanroom grade, classification versus routine monitoring, minimum sample volume, number of locations, available time and historical method should be evaluated together. Grade A does not create a universal requirement for a 100-LPM portable counter. The monitoring strategy and risk assessment should justify the selected flow, channels and sample plan.

Tubing configuration also matters. Although the specification gives a maximum tubing length, longer tubing and bends can increase transport loss, especially for larger particles. A maximum allowed value is not automatically the preferred routine configuration.

Lasair Pro supports recipes, users, locations, audit trail and multiple communication options. DataAnalyst can extend archiving and reporting, while a fixed FMS architecture may be more appropriate for continuous online monitoring. The URS should define which data system is required before procurement.

SAO NAM is the Authorized Sales and Service Center of Particle Measuring Systems specializing in Life Science applications in Vietnam. Support may include model selection, accessories, official supply, installation, qualification coordination, training, calibration, preventive maintenance and troubleshooting according to project scope and service agreement.

After selecting a model, the site should convert the rationale into controlled recipes, location hierarchy, sample volumes, delay, repetitions, channels and reports. Operators should be trained on probe orientation, tubing, battery management, transport and cleaning. Qualification should verify normal sampling and relevant failures such as low flow, communication loss, wrong location selection and incomplete records. A capacity calculation should include movement, gowning, airlocks, purge and documentation rather than using theoretical sample time alone. Periodic review should examine invalid runs, battery condition, calibration drift, maintenance and whether room or process changes have altered the original throughput assumptions. This makes the model decision defensible throughout the equipment lifecycle and supports consistent execution across different operators, shifts and controlled areas during routine pharmaceutical operations.