The biggest differences are as follows 1. Volume: The volume of fixed water sampler is larger than that of portable water sampler; 2. Power supply mode: fixed water quality sampler is AC, portable water quality sampler is lithium battery power supply, according to the use of the site can also carry solar power supply; 3. Fixed water quality sampler can only be fixed in a certain place to use, portable water quality sampler can, according to the user's work needs, free to move.

This needs to be based on the user's own work needs, if you want to analyze the average value of water quality in a certain period of time, use mixed water samples; if you want to analyze different water quality changes in different time periods, you must use separate bottles to sample.

It shall have the refrigeration function of 4℃±2℃, AC power supply, equipment protection if installed outdoors, access control system, and personnel with authority can take representative water samples.

Manual sampling, automatic sampling, remote trigger control sampling.

Water sampler is widely used in: municipal sewage, environmental monitoring, water conservancy hydrology, scientific research institutions, health and epidemic prevention, public security anti-drug, third-party detection, industrial park supervision sewage charges, sponge city, pipe network monitoring, agricultural non-point source pollution monitoring and other application scenarios. It is also an ideal tool for remote water quality sampling supervision and measurement of influent concentration by sewage treatment enterprises.

Used in all kinds of water environment scientific research and environmental monitoring stations, water conservancy hydrology, health and epidemic prevention stations, disease control centers, universities, environmental impact assessment departments and other daily work of all kinds of portable water collection environment.

Water quality on-line excess sample retention device is specially designed and produced by Grasp Company for mixed sample supply and excess sample retention of water pollution source on-line monitoring system. The sampler is widely used in pollution sources, sewage treatment plant inlet and outlet, and COD, ammonia nitrogen, total phosphorus, total nitrogen, heavy metals and other online monitors online use. It has flow tracking sampling mode, which can automatically adjust sampling flow according to instantaneous flow, realize continuous sampling, and ensure that the collected water samples are more representative. With A, B bucket mixing sample function, can provide uninterrupted mixed water sample to the online monitor.

Automatic water sampler is a sampling device that can replace manual work, which can realize timing, quantitative and remote external trigger sampling. It is an environmental monitoring instrument which can improve water quality sampling efficiency, reduce labor cost and obtain representative water samples in daily environmental monitoring process.