Automated Filter Integrity Tester

Whats/App: +86 156 1874 6768

Web: standard-groups.com

Testing Standards

ASTM F838 – Membrane bubble point method

ASTM D5199 – Gas and liquid filtration membrane performance testing

ISO 2548 series – Pressure decay and diffusive flow methods

GMP/GDP Filter Validation Guidelines

FDA 21 CFR Part 11 – Data integrity compliance

Product Specifications

Parameter	Technical Specifications
System Size	1189 × 575 × 856 mm
System Weight	Approx. 120 kg (empty water tank)
Water Tank Capacity	18 L (removable, manual/automatic filling)
Forward Flow Test Accuracy	±3% or ±0.05 mL/min (whichever is larger)
Water Intrusion Test Accuracy	±3% or ±0.02 mL/min (whichever is larger)
Bubble Point Test Accuracy	±3%
Power Supply	100–240 VAC, 50/60 Hz, typical power 150 W
Compressed Air Pressure	4500–8000 mbar (58–116 psi)
Test Flow Range	FF: 0.1–1000 mL/min; WIT: 0.02–50 mL/min; BP: 400–6500 mbar
Test Resolution	FF: 0.1 mL/min (<10 mL/min: 0.01 mL/min); WIT: 0.01 mL/min; BP: 50 mbar
Touch Screen	26.4 cm diagonal, 1024 × 768 pixels, backlit, adjustable contrast
Protection Level	IP54 (splash-proof)
Environmental Conditions	Operating temperature: 5–50℃; Storage temperature: -20–70℃; Relative humidity: 95% RH (non-condensing)

MUX Expansion Module Specifications

Parameter	Technical Specifications
Model	AW04
Size	680 × 650 mm, height approx. 1100 mm
Materials	Piping: Stainless steel 1.4435/1.4404; Frame: Stainless steel 1.4301; Clamp gasket: EPDM (FDA); Wet contact hose: PTFE (FDA)
Maximum Pre-Installed Filter Quantity	4 liquid filter housings

Product Features

Fully automated operation: complete automatic wetting, testing, and drainage of filters.

Time-saving: automatic testing reduces testing time by over 50% while maintaining accuracy.

Safe and environmentally friendly: only water is used; no alcohol required, reducing flammable liquid risk.

Remote operation: supports PLC, SCADA, and OPC UA protocols for centralized control and monitoring.

High-precision flow measurement: ensures accurate and repeatable low flow detection.

Self-diagnostic and verification: daily automatic checks for valves, sensors, internal regulators, and data integrity.

Fault detection: automatic alarms for low flow, abnormal pressure, or leakage, minimizing false readings.

Compatible with multiple membrane types: hydrophobic, hydrophilic, and multi-layer composite membranes.

Paperless record-keeping: results can be stored electronically, printed, and exported as PDF/XML files compliant with GMP.

Accessories and Consumables

Name	Model/Specification	Quantity	Unit
Built-in Water Tank	18 L, removable	1	piece
Thermal Printer	Paper width 112 mm, roll diameter 50 mm	1	set
Standard Water Connection	Manual/automatic filling	1	set
MUX Expansion Module	AW04	1	set
Liquid Filter Housing	Pre-installed (optional)	1–4	pieces
Touch Screen Operating System	Embedded Linux	1	set
Data/Network Cables	USB, Ethernet	Several	pcs
Testing Software	Self-developed system	1	set
User Manual	Included	1	set

Testing Principle

Water Intrusion Test (WIT): Hydrophobic membranes are fully wetted and subjected to air pressure. The water evaporation rate is measured, correlating with bacterial retention capability.

Forward Flow Test (FF): Hydrophilic membranes are fully wetted, and the liquid or gas flow through the membrane is measured to assess filter integrity.

Bubble Point Test (BP): Pressure is gradually increased until continuous bubbles appear, determining pore size and membrane integrity.

Flow Control and Measurement: Flowstar IV volumetric flow metering technology ensures high accuracy and repeatability.

Safety Control: The system automatically detects low flow, downstream pressure anomalies, and leakage to prevent false readings.

Operating Instructions

Ensure compressed air pressure is within 4500–8000 mbar before operation.

Water intrusion tests require only deionized water or water of equal quality; avoid alcohol or other liquids.

Hydrophilic filters must be fully wetted before testing; wetting liquids must be compatible with process.

Avoid large temperature fluctuations to maintain accurate gas flow measurements.

System self-check is recommended on first startup; periodic calibration of Flowstar IV flow meters is advised.

When using MUX modules, ensure filter housings are securely connected without trapped air.

Experimental Procedure

Water Intrusion Test (WIT)

Connect the filter housing to the system.

Check the water tank level and prepare deionized water.

The system automatically fills the filter and seals it.

Apply air pressure and measure the water evaporation rate.

Drain the system and automatically generate an electronic test report.

Forward Flow Test (FF) and Bubble Point Test (BP)

Fully wet the filter membrane.

Measure the liquid or gas flow through the membrane and record flow data.

For BP testing, gradually increase pressure until continuous bubbles appear.

The system automatically determines pass/fail for integrity and generates an electronic report.

MUX Expansion Module Operation

Connect 1–4 filter housings to the MUX module.

The system automatically cycles through each filter, recording and storing all test data.

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