Product model: HM-WX6B
Water quality monitoring laboratories — whether serving pharmaceutical manufacturing, municipal water supply, food processing, or environmental surveillance — face a common operational challenge: processing large numbers of water samples within tight time windows. Daily testing schedules for pharmaceutical water systems may require 10 to 20 or more samples per day, while municipal water surveillance programs can involve even higher volumes. Using single-channel or three-channel filtration instruments creates a throughput bottleneck that extends work hours, delays results, and increases labor costs.
The HM-WX6B microbial limit tester from HM Instruments was engineered to break through this throughput barrier. Its six independent filtration channels, powered by dual built-in diaphragm pumps, can process up to six water samples simultaneously — doubling the capacity of three-channel instruments without requiring additional bench space. Each channel has its own mechanical rotary knob for immediate on-off control, allowing operators to start and stop individual stations as samples become available, without waiting for an entire batch to be prepared. The direct drainage system eliminates filtrate collection bottles, streamlining the transition between consecutive test runs. With individual channel flow rates exceeding 1000 mL/min (no load) and 450 mL/min (loaded), even larger-volume water samples are filtered efficiently. The L304 stainless steel shell provides the surface hygiene required in cleanroom and food safety testing environments, while flame-sterilizable filter heads and anti-backflow protection address the contamination control requirements critical to result reliability.
| Parameter | Specification |
|---|---|
| Model | HM-WX6B |
| Control method | Mechanical rotary knob |
| Number of filter heads | 6 |
| Number of built-in pumps | 2 diaphragm pumps |
| Drainage method | Direct drain |
| Applicable filter cup | Ø47mm disposable / Ø47mm Ø50mm reusable stainless steel, 100 mL |
| Single head flow rate (no load) | >1000 mL/min |
| Single head flow rate (loaded) | >450 mL/min |
| Shell material | L304 stainless steel |
| Sterilization compatibility | Flame sterilization supported |
| Anti-backflow protection | Yes |
| Independent channel control | Yes |
| Power supply | AC 220V / 50Hz |
| Power consumption | 48W |
| Dimensions (W x D x H) | 648 x 238 x 202 mm |
| Weight | 11.3 kg |
A: The HM-WX6B provides the same six-channel capacity in a single instrument that occupies less bench space than two three-channel units. The dual-pump system is designed to supply adequate vacuum across all six channels simultaneously, whereas two separate three-channel instruments may have inconsistent performance between units. Additionally, the single-instrument approach simplifies cleaning, maintenance, and calibration management.
A: Yes, each of the six channels has its own mechanical rotary knob for independent on-off control. You can operate one, two, three, or any combination of channels simultaneously. This flexibility allows you to scale processing capacity to match your daily sample volume without wasting consumables on unused channels.
A: With six channels operating simultaneously and an average filtration time of 2-5 minutes per sample (depending on sample volume and viscosity), a single operator can process 60-120 samples in an 8-hour shift, including setup and filter transfer time. This throughput is well-suited for pharmaceutical water system daily monitoring programs with 10-20 sampling points.
A: Each channel's filtered liquid is discharged directly through the built-in pump system without entering a collection vessel. The dual pumps create sufficient vacuum to maintain drainage flow across all six channels simultaneously. This design eliminates the need for six separate collection bottles and their associated cleaning and validation requirements.
A: Yes, the HM-WX6B is widely used in food and beverage quality control laboratories for membrane filtration-based microbiological analysis. The six-channel capacity is particularly valuable for testing multiple production batches or product lines simultaneously, meeting the throughput demands of food processing facilities that need same-day results.
A: HM Instruments provides a 1-year warranty, 24-hour response through 280 service outlets nationwide, lifelong technical support, and lifelong spare parts supply. The company holds ISO 9001 certification, ensuring consistent manufacturing quality and service standards.
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