How does the WS-9300/WS-9350 portable automatic water sampler ensure stable sampling in low-temperature environments and prevent sample deterioration?

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Accepted Answer

This model adopts a dual solution of low-temperature adaptation and constant-temperature sample storage. The refrigeration compartment uses compressor refrigeration with temperature control accuracy of (4±2)°C, complying with national standards for water sample cold storage.

Independent heating modules are installed in both the refrigeration chamber and peristaltic pump area, enabling the equipment to operate stably from -30°C to 40°C, avoiding pipeline icing and pump shutdown during winter field sampling at discharge outlets.

It supports programmable automatic pipeline pre-rinsing and pipeline automatic draining before & after sampling to reduce microbial growth from residual impurities. Equipped with 24 pcs 1000mL PE bottles and power-off protection, refrigeration temperature settings and sampling records will not be lost after power failure. Up to 5,000 sampling records can be stored to keep samples fresh at low temperature and guarantee reliable lab test results.