ST-LPW31-040
The 40 L/h option combines the lowest production rate with the series ultrafiltration treatment for a measured lower-volume preparation schedule.
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Cleanroom Pure Water Systems
Laboratory Ultrapure Water System – ST-LPW31 Series
Product specifications
| Brand | ST |
|---|---|
| Public model series | ST-LPW31 |
| Feed-water requirements | municipal tap water; TDS ≤200 ppm, pressure 1.0–5.0 kg/cm², temperature 5–45°C |
| Main unit dimensions | H × W × D: 1430 × 525 × 570 (mm) |
| Unit weight | 80 kg |
| Power supply and rated power | 220 V/50 Hz 75 W (voltage tolerance±10%) |
| Dispensing rate | 1.8-2.0 L/min |
| RO water quality | ≤1-5 µS/cm (online monitoring), desalination rate 99% |
| Ultrapure water quality | resistivity 18.2 MΩ·cm at 25°C (online monitoring, GB/T 6682-2008) |
| Microbial level | ≤1 CFU/mL |
| Particle count | ≤ 1 particle/mL |
| Heavy-metal ions | ≤0.1 ppb |
| Absorbance | ≤0.001 |
| Soluble silica | ≤0.01 mg/L |
| Endotoxin | ≤0.001 EU/mL |
| UF membrane cut-off | molecular-weight cut-off 5000 Da |
Customization availableSpecifications can be customized to your requirements.
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Laboratory Ultrapure Water System – ST-LPW31 Series adds ultrafiltration and an endotoxin requirement to the floor-standing laboratory water arrangement. It supports preparation needing attention to larger biological contaminants as well as dissolved ions.
The 5,000 Da UF cut-off is the functional difference to compare with the basic tall-cabinet configuration. Three output capacities then match production to consumption; the listed housing size is unchanged across those output choices.
MODELS AND DIMENSIONS
Available output models
| Model | Production rate |
|---|---|
| ST-LPW31-040 | 40 L/h at 25°C |
| ST-LPW31-060 | 60 L/h at 25°C |
| ST-LPW31-100 | 100 L/h at 25°C |
Production-rate ratings are stated at the temperature shown in the table.
MODEL DIFFERENCES
Which configuration fits the task
ST-LPW31-060
The 60 L/h model adds recovery capacity when successive batches leave the 40 L/h option insufficient replenishment time.
ST-LPW31-100
The 100 L/h configuration is the highest-output choice for sustained demand; its 5000 Dalton ultrafiltration specification remains the same as the smaller versions.
FEATURES AND BENEFITS
How it helps
Biological-contaminant treatment
Ultrafiltration provides the additional molecular separation stage associated with this configuration.
Floor-standing higher-purity point
The separate cabinet gives staff a dedicated collection location without occupying the main preparation bench.
APPLICATIONS
Where it is used
Reagent preparation with biological-contaminant limits
Use for preparation methods whose full endotoxin and water-quality requirements match this configuration.
SYSTEM SELECTION
Match UF-equipped supply to biological work
Preparation requirements
Use the specified endotoxin criterion and UF treatment to assess the biological-contaminant needs of the reagent procedure.
Floor layout and duty
Choose the production model for the collection schedule and leave room to access the filtration stages at the dedicated floor-standing water point.
PROCUREMENT / INQUIRY
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