Welcome~Shanghai Leading Water Treatment Equipment Co.,Ltd

PRO-S-DI Series

①Resistivity(25°C):10-16MΩ.cm ② Salt rejection 95-99% (with new RO membrane) ③Conductance:<0.1us/cm
④TDS (RO Water): <10ppm
⑤2 water outlets: RO water, deionized water


Ø Backlight LCD display, dual waterway online monitoring, which can simultaneously display RO conductivity value, UP or DI resistivity value and equipment operating status indication;

Ø Menu-type operation, which can modify and set multiple measurement parameters; with multiple operating status displays and indicator lights to promptly reflect the operating status of the equipment, high-pressure shutdown, low-pressure alarm, full water shutdown, etc.

Ø RO water Ultra-pure water water quality alarm warning prompt Automatic replacement of the filter element, you can set the water withdrawal time and take water regularly and quantitatively; touch the button to take the water, the RO UP water indicator will automatically prompt;

Ø Floor-standing design, with movable and fixed feet at the bottom, making installation and movement more convenient.

Ø RO water, deionized water, two kinds of water outlets.

Ø Multiple safety protection, exquisite chassis and beautiful appearance.

Ø Free portable TDS water quality testing pen.

Ø Configure ultra-large capacity purification tank.

Ø The front of the machine is equipped with an independent water intake end.


Preposition unit of ultra pure water system, supply water for biochemical analyzer, electroplating painting, battery charging, chips washing, microbial culture media, chemical&biochemical regent preparation, buffer making, photographic film processing, stability test chamber, meteorological test equipment, hydrogen generator, salt 



Filter function

² First stage: PP cotton (PPF filter with a pore size of 5 microns): Preliminary filtration of raw water to remove coarser particles, colloids, suspended solids, etc. in the water.

² Second stage: Granular activated carbon: high-efficiency adsorption of odor, color, organic matter, and heavy metals in water.

² Third stage: Compressed activated carbon: further remove residual chlorine, organic compounds, color, odor, turbidity, etc.

² The fourth stage: RO reverse osmosis membrane: 0.0001 micron pore size, effectively removes organic impurities such as viruses and heavy metals in water.

² The fifth stage: Deionization purification tank: remove most of the heavy metals and trace elements in the water, and the water quality meets the national laboratory water first-grade water standard.


Feed water request

TDS <200ppm, 5-45 ℃, 1.0-3.5Kg / cm2

Flow rate

1.5-2 L/Min ( with pressure barrel)

Water making speed


2 water outlets

RO water and DI water

RO water quality

TDS <10 ppm * Total salt rejection above 95%

DI water quality


<0.1us/cm (0.01ms/m)



Inorganic ion rejection


Soluble organic matter rejection

>99% (molecular weight >100)

Particulate matter rejection rate


Microbial retention rate


Machine size (L x W x H)

50 × 52 × 108cm

Standard configuration

Machine + 11 gallon pressure tank + accessory package

Power supply

220V 50/60Hz  72-240W

Operation screen display


Product consumables list


Filter element

Replace cycle



20’’ PP cotton

About 4-6 month

1 pc


20’’ Granular activated carbon

About 4-6 month

1 pc


20’’ Refined activated carbon

About 4-6 month

1 pc


400 GPD RO membrane

About 1-2 years

              1 pc


12L deionization purification tank

About 25 tons

  1 pc